Why is my Blazer 4.3L driving like a dog?

If you have Hesitation and surging on Blazer 4.3L and it’s driving like a dog—poor acceleration, hesitation, or a surge and you suspect a fuel problem, you may be partially right. But before you start replacing really expensive components like the fuel pump, try this: Disconnect the electrical connector to the MAF sensor and take it for a drive.

What was the problem with my Chevy Blazer?

So far have replaced: fuel injection system, throttle body sensor, fuel filter, spark plugs, wires, distributor cap, rotor and EGR valve. Fuel pump does whir and kick in when key turned. Previous to not getting fuel completely, the Blazer was surging when I drove it and was not responsive to the gas pedal intermittently.

What causes hesitation and surging on Blazer 4.3L?

Fix Hesitation and surging on Blazer 4.3L If you have Hesitation and surging on Blazer 4.3L and it’s driving like a dog—poor acceleration, hesitation, or a surge and you suspect a fuel problem, you may be partially right.

How does a Chevy Blazer start and stall?

One end is a snap or quick disconnect that you squeeze the 2 tabs and it pulls off (after pressure released). The other end requires 2 open end wrenches. The bracket it is in is held on by one 13mm bolt to the frame that has to be taken off to get the filter out of the bracket and the lines are simply snapped in to the top of that bracket.

What to do when your Chevy Blazer wont start?

Aby codes (SES light on) and if so post them. No codes come up until after it happens then it comes up oxygen sensers port 1 and port 2. You can step on the gas and the engine just bogs it has absolutely no power . Put the car in neutral ( while still moving ) count to 3 and restart and have all the power you want.

What kind of problems does a Chevy Blazer have?

I have a 1974 Blazer with a 305 in it, I just replaced spark plugs, cap, rotor, wires, fuel filter, some hoses and PCV valve. It starts up strong, runs fine for a bit – drive it around the neighborhood – then once I come to a stop it basically dies on me, sometimes it will start right back up again – sometimes it will just crank and crank.

What kind of engine does a Chevy Blazer have?

1996 Chevy Blazer. 6 cylinder engine. While driving on the highway my Chevrolet Blazers engine just shut off. I pull over, wait a minute, then start the engine and continue down the highway again. A minute later the engine shuts off again. This happens 7 or 8 times.

Why does my GM 4.3L engine not start?

No Start Condition Basics There are three very basic components that the engine, in your GM vehicle, needs to start and they are: Air, Fuel and Spark. When your 4.3L, 5.0L or 5.7L GM vehicle cranks but does not start, it’s because one of these components is missing from the mix.

Are there any problems with the Chevy 4.3 Vortec engine?

The 4.3 Vortec engines made from 1996-2002 (L35 and LF6) have been reported to have engine knock problems. In a properly functioning engine, fuel burns in even pockets instead of all at once. The pockets burn in even timing, in sync with engine cycles. Engine knock occurs when the fuel burns unevenly and out of sync with the engine cycles.

Is the Chevy Vortec 4300 a reliable engine?

Chevy Vortec 4300 (4.3L V6) Engine Reliability Overall, the 4.3 vortec is a very strong and reliable motor, proven by it being the longest lasting production vortec engine. Generally, these engines are extremely capable of lasting up to 300,000 miles.

What causes a Chevy Vortec distributor to not turn?

The cap is prone to warping from the heat, which results in the cap rubbing against the distributor rotor button. This causes the rotor bushing to wear out and the distributor begins to no longer be able to turn. The simplest option here to fix this problem is upgrading to a distributor that has an aluminum housing on it.

Why is my Chevy Vortec 4300 V6 leaking fuel?

In the L35 and LF6 engines, the spider injectors are known to leak at the pressure regulator and at the supply and return lines due to a design fault. Outside of leaking fuel onto the exterior of the engine itself, it can cause excess fuel to get sucked into the engine.

What causes a car to have a no start condition?

The engine pistons and valves (and all the other related components like: timing chains, etc.) are the ones responsible for the induction of the fresh air the engine needs for the combustion process. Although rare, internal engine mechanical problems can and do cause no-start conditions. Blown head gasket. Blown engine. 4.)

What does the oil pressure sensor on a Chevy 4.3L do?

The oil pressure sensor on a Chevrolet 4.3L V6 engine is part of a network of sensors that provides the powertrain control module (PCM) with information about the engine. This sensor measures the pressure of the engine oil and relays this data to the PCM. When the PCM detects low oil pressure it illuminates the oil

What should I do if my S10 engine Jerks?

Pull your oil cap and hold your hand over the hole while it is idlling. You shouldn’t hear or feel any compression blowby from any cylinders. If you do, try a thicker grade oil.

Where was the ignition located on my 93 S-10 Blazer?

My old 93 S-10 blazer had an internal Ignition Module, inside the bottom of the distributor. I know this much, if those little PIA’s start winking out, you will see all kinds of issues similar to what you are describing.

What causes a misfire on a 94 S-10?

Typically if the lower intake gasket leaks vacuum, it only affects one cylinder and causes a noticeable misfire all the time. On your engine, the ECM batch fires the injectors, it can not richen the mixture for individual cylinders.

Why does my Chevy Blazer not go over 20 mph?

Won’t go over 20 mph. Starts right up. New plugs and wires. Never really cuts off. Runs hot but not extremely. Mass air flow is usually an intermitant problem. This sounds more like a stopped up catylist converter. take the cat off and run it, see if it gets hot, most likely that will be the problem]

What’s the fuel pressure on a Chevy Blazer?

My Blazer bogs down when you hit the gas and has trouble starting. We have replaced the MAF sensor, plugs, rotor, cap, plug wires, and fuel filter. The fuel pressure is at 50psi when idling and 64 wot when driving. Can we have pressure without flow? Initially the code was p0171. Now that we cleared it it hasn’t come back on.

What is the engine code on a Chevy Blazer?

Initially the code was p0171. Now that we cleared it it hasn’t come back on. Pulled O2 sensor to relieve back pressure and there was no change. Cleaned connections on battery. On scanner TPS checks good ( 0-100%).

Which is the best version of the Chevy Blazer?

With three bold personalities to choose from, there’s sure to be a Blazer that’s a match for you and your life. Add some bold accents to your Blazer with the Sport Edition or go all-in on all-black with the Midnight Edition. Whichever you choose, you’re sure to be the center of attention.

What kind of interior does a Chevy Blazer have?

Blazer Premier is the SUV you’ll love to be seen in. A custom Black mesh grille and Black bowtie emblem set the tone for the sporty RS. Inside, you’ll find Jet Black leather-appointed seating surfaces with Red accents that help make RS a true showstopper.

When to install a new Chevy S10 driveshaft?

Make sure your vehicle is up to the task of being a reliable daily driver by installing a new driveshaft for Chevrolet S10 from AutoZone today. When there’s a loss of power between your S10’s driveshaft and transmission, there’s a disruption in the connection somewhere that needs to be fixed.

How long does a Chevy 4.3L Vortec engine last?

3 vortec is a very strong and reliable motor, proven by it being the longest lasting production vortec engine. Generally, these engines are extremely capable of lasting up to 300,000 miles.

What kind of engine does the Chevy S-10 Blazer have?

The 2.8L V6 was dropped as an option on the S-10 Blazer and Jimmy in 1990, though it was offered as an option on the S-10 and S-15/Sonoma pickups through 1993). A 5-speed manual transmission remained standard through 1994, but only with the TBI engine.

Is the 95 Blazer compatible with the S-10?

So the 95 Blazer is fitted with a crank sensor hole in the timing cover, where as the earlier models were not, and the timing cover on the 95 does NOT match up to the block on earlier models. So you all had it right, I would not be able to do this swap without changing the wiring harness. So I have now dropped that ideal.

Where was the Chevrolet S-10 Blazer pickup truck made?

Chevrolet S-10 Blazer. The S-10 Blazer and S-15 Jimmy were based on the Chevrolet S-10 and GMC S-15 pickup trucks and were manufactured in Pontiac, Michigan; Linden, New Jersey; Moraine, Ohio; Shreveport, Louisiana; Ingersoll, Ontario, Canada; Ottawa, Ontario, Canada; Oshawa, Ontario, Canada; and São Paulo, Brazil .

When did the Chevy Blazer come out in the US?

GMC S-15 Jimmy 2-door Chevrolet introduced the S-10 Blazer in 1982 along with its rebadged variant, the GMC S-15 Jimmy, and S-10 pickup truck, the latter replacing the Isuzu -based Chevrolet LUV. The Blazer and Jimmy appeared as 1983 models.

Why does my Chevy Blazer engine bog down when I hit the gas?

Take it to a good local mechanic (not a dealer) and see if this is one problem. My Blazer bogs down when you hit the gas and has trouble starting. We have replaced the MAF sensor, plugs, rotor, cap, plug wires, and fuel filter. The fuel pressure is at 50psi when idling and 64 wot when driving.

Is the Chevy Blazer New from the ground up?

Indeed, a Blazer new from the ground up is not far away, but the Blazer’s classic rectilinear shape appeals to those who like a truck that’s shaped like a truck and not something squeezed out of a toothpaste tube. The model line was streamlined for 2000.

How long does a 2000 Chevy Blazer last?

All go out around 100,0000 mi. I knew of these common problems before purchase. If kept in good order l, she should last around 250,000 mi. Plenty of power if you increase air flow. Fits all three grand kids and daughter with no problem on small adventures. Fits all of my tools for work.

What’s the price of a 2000 Chevy Blazer?

The old base Blazer has been dropped and two-door models are available in LS trim only ($19,995 with 2WD, $22,495 with 4WD). The top-of-the-line Trailblazer ($29,995 with 2WD) is offered as a four-door only.

Is the 2000 Chevy Blazer 4 wheel drive?

That aside, I bough my 2000 Chevy Blazer about a 2 years ago from my uncle. When i got it it had around 70,000 miles on it and it was like new. No rust, no problems what so ever. Now after 2 years its still just as good as when i got it. I have the 4 wheel drive one and it has been a life save during the new england winters.

Is the Chevy Blazer a good all around car?

The S-10 platform for GM is one of the best all around vehicles produced. Eats up the snow in 4wd, gets on it when you need it, and is spacious to drive long distances. Cheap to maintain, this is the 6th Blazer we’ve had in our family, AND ALL OF THEM HAVE REACHED 250,000 MILES.

How big is the engine on a Chevy Blazer?

The 4.3 liter engine is a proven engine that has been around since the early 80’s and is still used as the “small” engine for the full size pickups today. Overall this is an extremely versatile vehicle that requires a minimum amount of effort to maintain.

How does the fuel system work on a Chevy Blazer?

Fuel system has a test port on the metal line that requires a special valve to connect and then ckeck the pressure. 60psi min with key on engine off (start pressure) and 54psi running. If those check out then on to electrical/sensors/etc. Any SES light on and codes?

Why is my Chevy Blazer stalling and stalling?

Check/clean EGR. This does have the newer style injection so could be fuel pump heats up and pressure drops – have to test at test port. Coil could be failing due to overheating due to ignition module never shutting off so always a low voltage to it.

Does your S10 jerk / Buck at steady speed / RPM?

Does your s10 jerk/buck at steady speed/rpm, let’s fix this togheter! Not open for further replies. I’m a member of many s10 forums, and these days they are flooding with members that has the intermitent jerk/buck at steady speed/rpm problem.

When do I hit the gas my car jerks?

My car jerks slightly when I’m at a steady speed or tryin… when I try to stay at 40 45 mph my car chugs jerks slightly, but when I hit the gas it goes away only usually at those speeds. I replaced spark plugs all but number 3 today didn’t change anything, change tps nothin, changed air tempature sensor and no change.

Can a bad transmission cause a car to jerk?

At that moment, a bad transmission can cause the car to jerk, and that could be accompanied by a loud “slamming” noise. This generally will happen at the same speed with consistency as the transmission continues to corrode. The transmission sometimes can prevent the car from maintaining proper speed.

When was the last year a blazer had 4 wheel drive?

It was available with the 4.3 L V6 engine only, and most models featured four-wheel drive via an electronic transfer case; 1997 was the last year a manual transfer case for 4 wheel drive (floor shifter for 4 wheel drive) was offered. In 1998, the interior and exterior received some cosmetic changes.

What kind of engine does a Chevrolet Blazer have?

The 1.9 and 2.0 L gasoline fours and the 2.2 L diesel were dropped after 1985, replaced by the larger 2.5 L Iron Duke engine. The V6 was refitted with a throttle-body fuel injection system for 1986 in order to improve performance and fuel economy.

What kind of noise does a Chevy 4.3 make?

by Contributor. A common complaint with the Chevy 4.3 engine is that it doesn’t idle well, it’s loud and makes awkward noises. Examples of this are staling, lurching and poor acceleration. Poor idling and loud engines usually go hand-in-hand.

What should the RPM be on a Chevy Blazer?

In addition, anytime you hit the gas to accelerate the RPM gauge suddenly shoots up to 3.5 and shoots back down to 2, and keeps going up and down until you let off of the gas. My first test would be with a vacume gauge. If the vacume is good it should hold between 25 and 29 at idle.

Why is my Chevy 4.3 engine still running?

Checking your vehicle’s fluid levels is always a good idea to maintain the overall longevity of the engine. Once you have ruled out all the basics, you can go back to what the Chevy 4.3 engine is known for: bad idle air control valves and throttle control switches.

3 vortec is a very strong and reliable motor, proven by it being the longest lasting production vortec engine. Generally, these engines are extremely capable of lasting up to 300,000 miles.

What to look for in a Chevy 4.3 engine?

Look for corrosion, breaks, exposed wires and loose connections. Considering the Chevy 4.3’s reputation, the broken wires and valves you find are probably related to the IAC and TCS. However, It’s best to double-check your car’s manual to pinpoint exactly what you are looking at.

How can I tell if my S10 Blazer has good spark?

If you have good spark, check the fuel filter and fuel pressure at the fuel rail. Back firing could be timing,cam position or crank position sensor.Worst case scenario, timing chain or belt.

Where are the freeze plugs on a 2000 Chevy Blazer?

You can’t post conmments that contain an email address. where are the freeze plugs located on a 2000 Chevy blazer. HOW can i hook my phone to my 2000 chevy blazer radio to play my music .

Is the engine idles fine but no power on acceleration?

This is for a 1995 chevy s10, 2.2L four cyclinder, automatic and regular body style with approximately 170 K miles. After every long trip I have to top off the engine oil. Now, I smell burnt oil and it loses power when driving and also idles rough. Also, on your conclusion, what would be a estimate ( by average ) for repairs. helpful?

How to troubleshoot the’spider’fuel injector assembly?

TIP 1: You’ll need a fuel pressure gauge to troubleshoot the fuel injector assembly on your GM 4.3L, 5.0L or 5.7L pick up (van, mini-van, SUV). TIP 2: You’ll be working around fuel (gasoline), which is extremely flammable. Your safety is your responsibility… so be careful, use common sense and think and act safety all of the time.

What should I do about my Chevy Blazer fuel injector?

If your reading this then like I did you have been searching the web and under the hood of you GMC Jimmy, S10, Astrovan, Or Chevy Blazer trying to figure out what to do about that crazy injection system in your truck. Well you have a few choices 1. Buy a new spider set for a small fortune.

Are there any Spider fuel injection Assemblies left?

Only 1 left! Only 1 left! Spider fuel injector assemblies are one of several different fuel injection system designs used by automotive manufacturers to deliver fuel to gasoline and diesel engines. These assemblies can sometimes become faulty over time and require cleaning or replacement parts.

Why is my Spider fuel injector not working?

Fuel filter: Sometimes a clogged fuel filter is the actual culprit instead of the fuel injection system, which can impact an motors performance noticeably. You can find new filters and other pre-owned parts for your fuel injector on eBay. What are the typical signs of a failing spider assembly?

What are the symptoms of a bad Vortec Spider injector?

Symptoms of Bad Vortec Spider Injectors 1 Misfire engine codes (P0400-P0406 and P0300 codes) 2 Long starting, hard cranking 3 Poor idle and running at low-rpm’s, but fine at high rpm’s

How to replace the Spider injector on a Chevy?

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What should fuel pressure be on 1993 Chevy TBI?

Verify there is 18-20 of fuel pressure when you dead head the fuel pump. If low, verify there is good power and ground to the fuel pump and that the fuel filter is clear. Also, make sure that the MAP sensor vacuum port in the throttle body is not restricted.

What should the fuel pressure be on a Chevy Cheyenne?

93 Chevy Cheyenne k3500, if it is running the Chevy vortec engine the fuel pump pressure is way too low, should be 56 psi+ depending on CSFI/CPI system or it will not start or open injectors, with out the aid of starting fluid. The factory manual specifies that the fuel pressure for the CSFI system should be between 56-62 PSI.

How can I increase fuel mileage on my 4.3L Vortec?

Throttle body spacers, when used by themselves, have a negligible effect on the power and fuel economy of the 4.3L engine. However, when used in conjunction with modifications, can significantly improve fuel economy.

When does a 2001 Blazer start to bog down?

I have a 2001 Blazer, last week as I was climbing a hill I attempted to accelerate and heard a “pop” and my engine started to bog down. Over this last week the bogging down has got progressively worse but only happens when you attempt to accelerate.

What should idle speed be on Chevy Blazer?

My first test would be with a vacume gauge. If the vacume is good it should hold between 25 and 29 at idle. May be a little low cause of the rough idle, but what your looking for Is for it to drop slowly to well below specs. This checks the catalyst converter it could be clogged.

Where is the idle control valve on a Chevy Vortec?

The idle control valve sits on the throttle body and is responsible for adjusting the amount of air that enters the engine at idle, ultimately controlling engine idle speeds. At idle, the valve blocks a small amount of air from entering the engine, keeping idle RPM’s low.

What causes a Chevy 4.3 engine to stall?

Lack of oil will cause a knocking sound in the engine, stalling, poor acceleration and eventually engine break down. Lack of transmission fluid, battery fluids, radiator and cooling system fluids can all cause symptoms that mimic bad idle air control valves and throttle control switches.

Is the Chevy Blazer a 4 wheel drive car?

Well, today I fixed yet another problem with my 2003 Chevy Blazer 4 Wheel Drive — Friday past, my in-dash 4×4 controls stopped working and hence I could not engage 4 wheel drive. Of course, these things will always happen at the most inconvenient time.

What causes low fuel pressure in an engine?

1 Clogged Fuel Filter The fuel filter cleans the fuel entering the engine. 2 Bad Fuel Pump A bad fuel pump is probably the most common cause of low fuel pressure. 3 Bad Fuel Pressure Regulator The fuel pressure regulator controls the fuel pressure in the fuel rail.

What happens if the fuel pressure regulator fails?

The fuel pressure regulator controls the fuel pressure in the fuel rail. If there is something wrong with the fuel pressure regulator, it can create too low or too high fuel pressure in the rail. It is not very common that this part fails, but it can happen.

Why is my Blazer 4.3L driving like a dog?