Why does my Chevy Silverado 1500 start cold?

Starts fine cold because its in open loop and using extra fuel to run but once its in closed loop with the idle air control reset there just isn’t enough fuel to start right away. One way there is too much air and the other would be not enough fuel.

Why does my AC blow cold then blow warm?

The moisture can freeze into ice crystals right at the orifice tube or expansion valve, clogging it and stopping the flow. The symptom appears as: blows cold, then warm. If you shut off turn on the heat for a while, that’ll melt the ice crystals and the system will start cooling again. But it will still freeze up.

Why does my Chevy Truck start and idle?

Not sure why this test caused a better and longer gas flow than the above test of just putting the ignition in the ON position and seeing how much gas comes out of the line before the fuel filter. Last test says to start the vehicle and remove the relay.

What’s the best time to start a Chevy Silverado?

MY SILVERADO PICKUP STARTS GREAT WHEN COLD BUT WILL NOT START WITH OUT CRANKING FOR PROBABLY AROUND 6 SECONDS. SOMETIMES MORE AND SOMETIMES LESS. IT WILL START BACK UP EASILY RIGHT AFTER YOU SHUT IT OFF BUT ABOUT 5 MINUTES LATER IT WILL NOT START VERY WELL.

Why does my car AC blow cold air then blow warm air?

But that cold air turns warm fairly soon after because the high side pressures build to the point that the high pressure switch shuts off the compressor clutch. Once pressures equalize, the high pressure switch allows the compressor to start up again. The cycle repeats over and over, providing a short period of cold air, followed by warm air.

What kind of gas does a 1997 Chevy truck use?

1997 chevy c1500 WT with 4.3 . getting harder to re crank.. Only driveable with both stop revving to keep it going. And that still doesnt work well. Work ive done. New cap and rotor. Cleaned…. Exh gas.

What does the Chevy Silverado climate control system do?

The Chevy Silverado climate control system uses several different components that come together to either cool down or heat up the cabin. When one or more of these components fails, the heat or cold air capabilities go along with it. Read this article to find out three common causes for temperature lost on your Silverado 1500.

When does Chevy Silverado 1500 engine hesitate during acceleration?

Chevrolet Silverado 1500 Engine hesitates during acceleration Inspection at your home or office. Our certified mobile mechanics come to you 7 days a week between 7 AM and 9 PM.

What kind of cold air intake do I need for my Silverado?

When you want to get maximum gains quickly, an aftermarket 99-06 Silverado Cold Air Intake is the way to go. The intakes that we carry here in our shop are made for all engines and will fit your truck perfectly.

What should I do if my Chevy Silverado wont start?

You should always have a suitable jumper cable in the trunk. With its help, the battery receives a current pulse from another vehicle that is sufficient to start the vehicle. The battery can then recover and recharge while the engine is running. Another option is to connect a battery charger.

Why does my air conditioner start up when its cold?

When its cold it is in open loop mode and by default would add extra fuel possibly neutralizing the effects of the small vac leak. As it warms up the idle air control adjusts to this vacuum leak and when the key is off the idle air control resets itself causing a hard start up due to the vacuum leak not being compensated for. Just a possibility

Why does my 97 Chevy truck not start?

97 Chevy truck won’t start when it gets cold?? When ever it gets cold my truck will not start. Seems to be fuel pressure but can’t smell any gas like it was flooding. It does’nt even fire like it wants to start.

What to do if your Chevy Silverado won’t start?

Cold Hard CHEVY Start Problem Solved! Chevrolet Silverado Express Suburban Tahoe GMC If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer.

Why does my Chevy S10 not start up?

Check oil pressure when you’re trying to start. Fuel pump runs for 2 seconds when the key is put in the run position. Then the fuel pumps power is routed through the oil pressure sensor until it receives a pulse signal from the distributor. Low oil pressure would prevent the circuit from changing over.

Is there a problem with rough idle when warm up?

So, once there’re visible signs of rough idling, trouableshoot the problem without causing any further delay. As reported by Car From Japan experts, most Makes getting this engine rough idle after warm up are: Though the problem is not common but drivers of the Makes had their car serviced at garages for Rough Idle When Warm.

Why does my car run rough when it’s warm?

It is because rough idle when warm can either be caused by one faulty component or through series of problems. However, it is easy to recognize the problem, as during rough idling either the engine would run at an irregular rate or it may have varying RPMs without your foot on the gas pedal.

What should I do if my car wont warm up when I start it?

Turn on the car’s ignition and let the engine warm up. While the engine is warming, make sure it deactivates the choke linkage. Then, using insulated plug wire pliers take out the wires from the plugged location. During the process, if the engine’s speed doesn’t drop, it clearly indicates a problem with a spark plug or wire.

What’s the RPM of a Silverados Vortec V8?

At the initial start up in the morning, the truck will start normally, then immediately the RPM’s will drop down to about 300-400 RPM’s, then “catch” back up and operate normally. I’ve cleaned the MAF, no codes, and the truck is stock. I haven’t done any checking with the fuel system or vacuum and don’t run any ethanol.

What kind of engine does a 99 Silverado have?

I have a 99 silverado, 5.3 liter 4×4 137k miles. Runs great when engine is cold. After about 10-15 minutes of driving when engine warms up, engine bogs down, idles rough, and dies when throttle is applied. I ran the codes, had low voltage x4 oxygen sensors, and random misfires. I replaced the 02 sensors because I am well over 100k miles.

What should rpm be on cold start 5.3L?

Recently my 5.3L has been giving a rough idle on cold start only, no drivability issues. It starts fine, goes to 900/1000RPM as usual and after a few seconds it starts to stumble. The RPMs drop to 500 and bounces to 700 for a few seconds, 5-10 maybe.

Why is my cold start 5.3L running rough?

If the coolant sensor is giving a bad reading the mixture could be too lean or too rich, causing the problem. The O2 sensor will take a minute or so before the PCM looks to them for readings. Just one warning unplugging the MAF on the 5.3. Shifts may be brutal, especially 1-2 shift.

How long does it take to fire a hard start Chevy?

Good Morning island auto, well your mention of that kind of pressure does sound a bit high, but the gauge you are using may have an error, generally even if the fuel did drain back to the tank it only takes a few seconds to be replenished and even if the system contains air, I would expect some firing to happen initially.

Why does my 99 1500 run rough when cold?

Need a little help. I have a 99 1500 with 5.3L. When first started in cooler weather the engine misfires, runs rough. Then it will rev way up and back down to almost stall and sometimes it will stall and I half to restart the engine. After running for a while and the engine warms up it runs great.

Is there a problem with my Chevy Silverado?

Cold Hard CHEVY Start Problem Solved! Chevrolet Silverado Express Suburban Tahoe GMC – YouTube Cold Hard CHEVY Start Problem Solved! Chevrolet Silverado Express Suburban Tahoe GMC If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations.

What causes a Chevy Silverado 1500 to hard start?

As it warms up the idle air control adjusts to this vacuum leak and when the key is off the idle air control resets itself causing a hard start up due to the vacuum leak not being compensated for. Just a possibility 16 people found this helpful. K6, see what I mean by listen to John?

When does a Chevy Silverado pickup start cold?

Why does my car air conditioner lose its cool?

A Leak in the A/C System A small refrigerant leak is the most common reason a car’s A/C gradually loses its cool. A leak is typically caused by a mixture of moisture and refrigerant that, when combined, creates a corrosive acid that eats away at seals, valves, and hoses in the A/C system.

Why did my 2000 Chevy Silverado stop running?

My 2000 Chevy Silverado Pickup stopped running. It will start My 2000 Chevy Silverado Pickup stopped running. It will start and run for a few seconds, but then stalls. I’ve changed the fuel filter, rotor and rotor cap with no success.

Why is my AC not working on my Silverado?

It is possible your AC system may have a slow leak, or even be overcharged. The AC system will not operate if it senses pressures too low or high. If you get a pressure gauge by Duracool from Wal-Mart you can check if pressure is somewhere between 25-38p.s.i is perfect, and no more than 45 p.s.i.

What happens when you turn off the a / C on a Silverado?

Basically the a/c stops cooling after a while, sometimes 30 mins to an hour. It doesn’t blow heat, just becomes ambient, musty and damp, on both the passenger and drivers side. I can switch the sytem off, keep driving for 5 mins, switch it on and it will cool nicely.

When did my GMC Sierra air conditioner stop working?

I had a 2001 GMC Sierra that did this when truck was less the one year old (summer of 2001 is when it was). The dealer had the truck in the shop idling for a long time and the A/C worked perfectly. I told them to take it for a ride and see. So the service manager in an effort to convince me nothing was wrong went for a ride with me driving.

What kind of car runs rough when engine is warm?

Runs Rough When Engine Is Warm: I Have a 99 Silverado, 5.3 Liter I have a 99 silverado, 5.3 liter 4×4 137k miles. Runs great when engine is cold. After about 10-15 minutes of driving when engine warms up, engine bogs down, idles rough, and dies when throttle is applied. I ran the codes, had low voltage x4 oxygen sensors, and random misfires.

What happens when the engine warms up in a Silverado?

After about 10-15 minutes of driving when engine warms up, engine bogs down, idles rough, and dies when throttle is applied. I ran the codes, had low voltage x4 oxygen sensors, and random misfires. I replaced the 02 sensors because I am well over 100k miles.

What should I do if my car misfire after warm up?

Misfire after warm up. Runs great when cold. Has new engine new plugs wires injectors when starts misfiring can shut down start back up and runs fine until a few minutes then starts again. have the same problem? This sounds like you have an intake valve that is leaking. Can you do a leak down test to confirm the issue? This guide can help as well.

Why does my Chevy Silverado 1500 start cold?