What was the problem with my 1998 Tahoe 5.7 Vortec?

Just had the same problem on my 1998 5.7 vortec first it started with just the #6 misfire then multiple misfires. turns out it was a bad fuel injectors. Since i was towing my boat i ignored it for a couple hundred mile till i got to my destination.

What kind of engine does a 99 Tahoe have?

I got a 99 tahoe 5.7 vortec with multiple misfires under load/accelerating. So far Ive replaced; plugs, wires, cap n rotor, coil, egr valve, fuel filter, o2 sensors. Tested; vacuum, fuel pressure, OBD 2 scan. All in which came back ok/no codes.

What should the pressure be on a Tahoe 5.7?

If the pressure is above 5psi this would indicate some blockage. It should be below 3psi at 2000 rpm. Also if you have K/N filter the oil from it will coat the maf sensor wires in time,, (always). You can remove the sensor and spray the wires with brake cleaner to clean. DO NOT touch them. They can be brittle.

Why did my 99 Tahoe have multiple misfires?

Re: I got a 99 tahoe 5.7 vortec with multiple misfires… This is one of those situations that a professional diag would of saved you alot of money. Its possible you just got bad gas and your injectors are partially clogged. An 02 sensor would not give multible misfires.

Why does my Chevy Tahoe feel slower then normal?

Everthing works it just feels slower then normal.. It’s a Chevy Tahoe 1999 2 door.. It can be fuel pressure issue or it’s the problem with accelerator pedal or its clogged filters causing there. There are many other possibilities.

What’s the problem with my Chevy Tahoe 1999?

It’s a Chevy Tahoe 1999 2 door.. It can be fuel pressure issue or it’s the problem with accelerator pedal or its clogged filters causing there. There are many other possibilities. I suggest you to go through the list of help links mentioned below, these will help you to confirm where the actual fault lies: ——-

What kind of acceleration does a Silverado Sierra have?

Durring light acceleration and at low speeds (city driving 35 mph or so) the truck seeems to run fine. However, when accelerating to highway speeds you notice that the truck will intermitantly jerk. In addition when crusing at highway speeds it runs fine, but anytime you have to lightly accelerate up a hill or something it starts again.

Why is my Chevy Suburban bogging down on hard acceleration?

I have a 97 Suburban 5.7, 2wd. On hard acceleration it is bogging down like there is to much air, because sometimes it backfires. Or a plugged exhaust. I replaced the fuel pump-because it was bad in July.

What kind of engine does a 99 Yukon have?

My 99 Yukon with Vortec 5.7L suddenly won’t run. It cranks over fine, starts in about 1 second (normal), but then dies 2-3 seconds later. Giving it a little bit of throttle while starting doesn’t make any difference.

What kind of engine does a Chevy Vortec have?

These vehicles introduced the L31 5.7L small block featuring Vortec cylinder heads that were developed for maximum power and efficiency. Producing up to 255 hp in factory spec, this engine can also be retrofitted into an older car with a performance carburetor to produce up to 290 hp.

Are there any problems with the Chevy Tahoe?

Loading Curious how the 1999 Tahoe compares to other years? Check out our Chevrolet Tahoe overview to see the most problematic years, worst problems and most recently reported complaints with the Tahoe.

What causes a Vortec 5.7 hesitation problem?

Problems with the Throttle position sensor, EGR Valve, Idle Air Control Valve, clogged catalitic converters, bad O2 sonsors causing truck to run with it much fuel, bad distributer cap/rotor, spark plugs and wires and a bad fuel filter are all problems that can cause the truck to bog down under heavy acceleration. Loading…

Why is my Chevy Tahoe not working in 4WD?

Last winter when I would put it in 4wd it was making a bad noise (almost like a wheel bearing roaring) but the 4wd was working then. The other strange thing that it was doing while in 4wd is when I would accelerate the steering was scary…I mean it was like only one front wheels was driving it.

Are there any problems with my GMC Vortec?

It has had cylinder 7 misfire, random misfire, rich, and 02 sensor codes. I have replaced all spark plugs (AC Delco), spark plug wires (summit), distributor cap & rotor (AC Delco), coil, driver side 02 sensor, fuel filter, fuel pump 1 year ago, and coolant temperature sensor.

Can a bad throttle position sensor cause idle surging?

Idle surging can be caused due to other issues in the car, but if it happens in conjunction with other throttle position sensor symptoms, the culprit is often the TPS. At idle, the ECM will not get the correct information and the throttle will variate randomly causing idle surges. 3) Check Engine Light

What’s the idle RPM on my Chevy Suburban?

My 1997 Chevy Suburban (5.7) is acting up on me. When I start it up the RPM and idle seem fine. As I let it sit for a couple of seconds the RPM’s slowly begin to drop until they finally bottom out at about 1K. As soon as I put it into Reverse/Drive etc. the RPM’s drop below that mark and it struggles to stay running.

What’s the misfire code on a 1998 Vortec?

Can someone please help with what I should check next, I have a 1998 Chevy K1500 5.7 Vortec with a misfire, P0300 code for 3 months. runs a little rough, while driving under normal conditions it sputters, hesitates, and also will backfire, under heavy acceleration no noticeable skip, no sputters, and does not hesitate or backfire.

How much is the Vortec Spider swap engine?

Only $280, and a fairly easy direct bolt-on product. If any issues arise I’ll post them up here. Thanks guys! Things to come at some point… Howdy there, I’m doing the same conversion to my truck, I have the spider all the way in, however I cant get the dang plenum to seat properly…

When did I upgrade my Vortec Silverado to MPFI?

June 25, 2012 in Engine and Performance – Anything for that couple extra horses! Hey guys, just did the spider upgrade on my ’97 5.7L Vortec Silverado to the MPFI and giving some input if anyone else was considering this swap.

What can you do with a Chevy Tahoe Vortec?

Power and efficiency can both be gained with the Vortec compared to the TBI/carb setup. Thanks for the knowledge! I am going to STROKE this hoe! I am finding it increasingly hard to find top end stuff with this.

When is Spider injector 5.7 Vortec out of stock?

Only 16 left in stock (more on the way). . Only 13 left in stock – order soon. . . In stock on July 26, 2021. . Only 12 left in stock – order soon.

What’s the difference between TBI and Vortec in a Tahoe?

If you’ve got a 99 Tahoe, you don’t have TBI – you’ve got a Vortec (dry intake vs. tbi’s wet intake). I wouldn’t go backward in technology. Power and efficiency can both be gained with the Vortec compared to the TBI/carb setup. Thanks for the knowledge!

What was the problem with my 1998 Tahoe 5.7 Vortec?