Question about 1999 Chevrolet Tahoe

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Flooded wont start

1999 Chev. Tahoe with 5.7L engine wont start, Cranks over fine, battery is fully charged. The no start condition appears after sitting for several days of non use. It smells of fuel (flooding). I previously had it towed to a shop and the fuel pressure was checked over several days with no leak down. No codes are set in the ECM. Where should I look next?

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  • 17 Answers

Sounds like you aint getting no spark, spark plugs or cap is what I would check.

Posted on Sep 22, 2017

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Posted on Jan 02, 2017

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David Robinson

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SOURCE: 1998 Chevy tahoe Hard to start when cold

Hello, yes the check valve is in the fuel pump assembly. The check valve is leaking and the pump will burn out soon. Unfortunately the aftermarket fuel pumps can be very unreliable. A good portion of problems we see on this site are from people who replace the pump sometimes twice and it still doesn't work.

Posted on Jan 03, 2009

Anonymous

  • 74 Answers

SOURCE: 1998 Chevy tahoe Hard to start when cold

replace your MAP sensor(manifold absolute pressure) the map sensor is the computer for your fuel pressure regulator telling how much pressure. Unless your tahoe runs like **** going up hill than it inevitably your fuel pump

Posted on Feb 17, 2009

Anonymous

  • 1 Answer

SOURCE: '96 Chevy Tahoe won't start

i had similar problem. hard to start in morning but once started, would start everytime until next morning. i changed fuel pump, filter, fuel pressure regulator, coil, cap, rotor, pickup coil, battery. i was finally told the '96 had a recall on the fuel injection assemby. i changed that out with the new mpf system and it solved the problem. runs like a striped ape. hope this helps.

james bentley

Posted on Apr 29, 2009

Anonymous

  • 216 Answers

SOURCE: 1997 chev tahoe 5.7 4x4.no ignition or fuel

sounds like the anti theft system? make sure you get it checked these had problems with broken wires at the igntion switch in the sterring coulmn

Posted on Aug 31, 2009

msbigdog7

Mabron Stevenson

  • 332 Answers

SOURCE: 1995 chevy corsica. intermittentely won't start.

The timming is off it possibly needs a new timming chain or the spark plug wires are on wrong

Posted on Jan 03, 2010

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I have an 03 Chev malibu. I just put a new battery in it. She won't start without a boost.runs fine afterwards.if I let her sit for a bit I will need a boost again..please help


New battery could be faulty or alternator not working.
If nothing happens when you turn the key,to check battery to determine its state of charge. Many starters won't do a thing unless there is at least 10 volts available from the battery. A low battery does not necessarily mean the battery is the problem, though. The battery may have been run down by prolonged cranking while trying to start the engine. Or, the battery's low state of charge may be the result of a charging system problem. Either way, the battery needs to be recharged and tested.If the battery is low, the next logical step might be to try starting the engine with another battery or a charger. If the engine cranks normally and roars to life, you can assume the problem was a dead battery, or a charging problem that allowed the battery to run down. If the battery accepts a charge and tests okay, checking the output of the charging system should help you identify any problems there.
the link below explains a complete diagnosis,
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Have a 01 Tahoe with new red top and fairly new alternator. It charges at about 14v. But if I leave the Tahoe set for a week, it wont start.Where do I look for a voltage leak. The Tahoe seems to be working...


Start with the basics; Is the reason the car does not start is that the battery is discharged after a week of sitting or a case that it won't start without a jump although the battery is still good. If the car just does not start after sitting then try the following; Pull the negative battery cable and let the car sit overnight. Reconnect the cable in the morning and see if it starts. If it does then you are looking for something that is pulling current from the battery. Could be lots of things; light on in the glove box or trunk, a short in a wire, etc. You can try pulling a couple of fuses each evening and in the morning, replace the fuses and see if the car will start after sitting. If it continues to discharge the battery then try another set of fuses. The day it starts after sitting then you have narrowed the electrical system that is discharging your battery. Focus on those systems

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Dead battery... Sometimes if the battery is very low then it must sit with the jumpers on for a few minutes to charge the battery. If everything worked fine after the engine started then the alternator is working ok. Check the battery terminals for corrosion and clean as necessary.

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I'm assuming that by turning over, you mean that the engine fails to turn with the starter . Check your battery for 12v and make sure all connections are clean and secure. If battery has less than 12v charge it and check the charging system after re-starting. Lights and radio do not pull the same amperage as the starter and may not tell you much about battery condition. If you have full battery voltage, check the starter for 12v at the battery connection and the small (trigger wire) for 12v with the key turned to start position. If you have both, likely starter has failed.

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1999 tahoe won't hold charge


you may have an earth problem, but unlikely if did not register on diagnosis so you'll probably need a new battery or it may need conditioning( distilled water so might as well get new battery).

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I had the same problem with my 1999 chevy dually. I tried everything and finally after a lot of lost sleep headaches and money we found the injectors were leaking. It was expensive but it starts right up now.

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