Why does my GMC Suburban no start flooding itself out?

If I unplug one of the injectors it starts up and idles and I am able to plug the injector back in and it will idle as normal. If I try and start it with both injectors plugged in, it just cranks and cranks without attempting to start.

What is fuel pressure on GMC Suburban 5.7?

Fuel pressure shows approximately 14 psi at the filter when the pump is running. As soon as the relay kicks the pump off the pressure drops to zero quick. I think this is normal as some TBI systems have a built in release.

Are there any changes to the GMC Sierra 1500?

New distributor comes with new ESC electronic unit, pickup coil, cap & rotor, also. No change. Next, read somewhere that the fuel pressure regulator diaphram if split could cause flooding. rebuilt throttle body unit, rebushed it and boiled it out and added rebuild kit and brand new Borg Warner injectors.

What to do if your GMC Sierra stall out?

69 people found this helpful. I have a 98 gmc searria 4×4 i checked fuel pressure it was under i changed fuel pump and fuel filter and its still starving for fuel what to do it starts with starting fluid 42 people found this helpful.

What is coolant temp on GMC Suburban 5.7?

Sensor maintained the 1.15 psi for over 2 minutes and the voltage went up to 1.17 towards the middle of two minutes, however the voltage never dropped until I released the pressure. Coolant temperature sensor showed… approximately 2.5 ohms at room temperature and went down to 0.21 ohms in 190 degree boiling water.

What kind of engine does a Chevy Suburban have?

My 1999 454 7.4 liter suburban LT turns over several times when cold before spluttering into life ( it then nees a bit of gas) and Idles roughly. i think it may have a slight missfire. is this a common problem.

Can a surburban have a rough idle on cold start?

Fry- I have an ’02 Surburban that has a rough idle on cold start. Typically, the temps have to be 40 degrees or below for this to occur. It never happens during the warm spring, summer and fall months.

When does a 1995 Chevy K 1500 350 TBI hesitate?

An expert whose answer got voted for 100 times. Re: I have a 1995 chevy k 1500 350 tbi it hesitates when…

Why does my GMC Sierra suddenly stop running?

Truck suddenly stops running, acting like it’s out of fuel. There is fuel in the gas tank and, I can hear the fuel pump when I turn the ignition on. Is there a fuse, or relay that is maybe causing this to happen?

Why does my truck run bad when it is really warm?

If it is telling the ECM that your engine is cold but it is really warm, it can cause it to run poorly. Usually, if the ECT sensor was bad, the truck would restart after the engine cooled down. I wonder if the cat is plugged. You should remove the 02 sensor from the exhaust manifold and try to start it.

Why does my car not start after warm?

Car will sometimes not start after warm. When i start my car, for the first time during the day- I have no problem. When I go somewhere and shut it off, sometimes it won’t resatrt. It doesn’t seem to matter what the weather is outside, it just does it when it feels like it.

Why does a car run when it’s cold?

While cold, the ring-cylinder mate is tight, keeping the combustion gasses from blowing by and allowing the engine to run.

What kind of car is 1991 Chevy Suburban?

42 people found this helpful. I have a fully restored 1991 Chevy Suburban that has fresh engine transmission rear end paint interior and I have left nothing undone or unrefreshed. About 3 months ago it quit running cold in Houston and had to have it towed back to Dallas. For all parts below I acquired all parts thru O’Reillys Auto Parts.

Why is my GMC Sierra 1500 stalling out?

No change. Next, read somewhere that bad ground wire on Thermostat housing can cause ECM issues. Checked it, cleaned it off, verfied that contact wanhers are all steel and attract a magnet, reinstall the ground wire.

What is signal wire on GMC Suburban 5.7?

The signal wire goes from 0.51 volts at an idle to 4.56 volts at wide open throttle. Oil pressure sensor tan middle wire shows a good ground. Grey wire show 8.75 volts and the red wire shows 12.37 volts. If I jump the two end wires together the fuel pump runs constantly however, this time is wont start.

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 causes a 5.7 liter GMC to sputter?

Two potential issues would be improperly heat treated distributor gears (there was a batch of them though they should have all been used up before ’99, you never know), and just general wear in the upper part of the distributor (common once they get up in miles.) Edited by JeremyB on 05-05-11 03:19 PM.

What causes a 1994 Chevy C / K 1500 to bog down?

– CarGurus 1994 Chevy C1500 5.7 bogs/backfires when I give it gas. My truck bogs down (and tries to die) when I give it gas to accelerate off of a stop. There is often a backfire or two when this happens. Pumping the gas does not help. I basically have to crawl through any intersection until it picks up a bit of speed from idle. The truck

Can a Chevy C / K 1500 run at idle?

There is often a backfire or two when this happens. Pumping the gas does not help. I basically have to crawl through any intersection until it picks up a bit of speed from idle. The truck idles smoothly, and it runs fine once it’s above about 5-10mph or so. If moving at a picking up the speed.

Why does my GM car say no start no crank?

How to diagnose a no start no click on GM vehicle. If you have a late model GM vehicle and turn the key only to hear nothing, you’ll most likely think you have a dead battery—and you may. But a no start, no crank, no click condition can be far more involved than that.

How to check no fuel condition on GM 4.3L?

I’ve also included how to check a no fuel condition with starting fluid (although this is not the most effective way to test the fuel pump). It’s been my experience that misdiagnosing a bad fuel pump is a common occurrence on the 4.3L, 5.0L, 5.7L GM vehicles with the ‘Spider’ fuel injector assembly.

What causes a car to flood with gas?

Damaged injectors or a cold engine that won’t start can result in a flooded engine. When a vehicle is cold, it needs a rich fuel mixture. A rich fuel mixture means that it contains a lot of gas and not much air.

What causes a fuel injected engine to flood?

A rich fuel mixture means that it contains a lot of gas and not much air. When the gas pours into the cylinders, if the car does not start the spark plugs can get wet. If the spark plugs are wet it is impossible for them to spark, which prevents the car from starting.

What causes a Chevy C / K 1500 to bog down?

My truck bogs down (and tries to die) when I give it gas to accelerate off of a stop. There is often a backfire or two when this happens. Pumping the gas does not help. I basically have to crawl through any intersection until it picks up a bit of speed from idle. The truck idles smoothly, and it runs fine once it’s above about 5-10mph or so.

Can a 1997 Chevy c1500 5.7L start?

1997 Chevy C1500, 2WD, 5.7L won’t start – cranks fine. No codes – good fuel pressure ( 60+ psi – new pump), good spark, 1997 Chevy C1500, 2WD, 5.7L wont start – cranks fine. No… It will not start. I changed the fuel filter and fuel pump It will not start.

Why does my 1997 Chevy Suburban not start?

1997 1500 pickup at low throttle engine is missing to the point were I had it full throttle and no power and engine died. Still won’t start … read more Vocational, Technical or Tra… i have a 1998 chevy suburban. It was running fine when parked, but 3 days later will not start. It cranks fine, but sounds as though it wants … read more

Why does my Chevy Silverado not start up?

Few things are as annoying as turning the key in your truck and finding it will not start. There are many problems that can result in a Chevy Silverado’s failure to start, making diagnosing the trouble even more frustrating.

What to do if your Vortec won’t start?

96 Chevy C1500 5.7L Vortec Truck won’t start, Replaced Fuel Pump, Filter & Has Spark. Hey everyone, I have a 1996 Chevy C1500 with a 5.7L Vortec, I got the truck recently and was told it just needed a Fuel pump, I replaced the Fuel pump, and the Filter, also the pump turns on and there is fuel up at the rail, I pushed the pin and it shot right out.

Why does my Chevy C / K 1500 not start?

FYI – If the pass lock isn’t working properly, the computer will not keep the fuel pump on when the key is turned to start and released. 72 people found this helpful. Note: If the battery dies or is disconnected, or the computer is disconnected, this procedure may have to be repeated.

Why is my Chevy Silverado 1500 not starting?

If the battery is empty shortly after charging, the alternator should therefore be checked for a defect. If the battery is OK, a defect in the starter can be the cause of a non-starting vehicle. Age-related wear or a material defect can damage the starter. This is often noticeable by a clicking sound when trying to start.

What makes a Chevy 1500 turn over and stall?

What happens is the passlock sensor creates a certain voltage reading under 5 volts & the PCM has to learn that voltage or it will start & stall until it does. The passlock sensor voltage reading has changed & you can relearn it to the PCM & you can start the truck again.

How to troubleshoot a no start GM 4.3L pick up?

Testing a Cranks but Does Not Start condition on your GM 4.3L, 5.0L, 5.7L pick up, van or SUV is not that hard to do, if you have a solid diagnostic strategy. In this article I’ll show you the basics of testing such a problem.

What should I do about my 1994 Chevy Silverado?

My 94 Chevy Silverado was also sputtering, backfiring, missing etc… I changed the fuel filter to no avail, tried several things to get it to run smooth but nothing helped’ until a friend of mine who used to have his own shop told me about a memo he had received years ago dealing with this identical problem. here’s what worked for me!