Question about 1992 Chevrolet Caprice

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1992 caprice on my 1992 chevy caprice the gas tank has started to expand, i mean way more than normal, and when it does that the gas gage goes hay wire, then shows empty as the tank expands more. the only way i have found to releave this is to open the gas cap, but i have to leave it open while i drive so it wont cause the problems. i changed the purge valve in the engine compartment bt the canaster, but that did not solve the problem, any ideas would be helpfull. thanks

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Sounds like something might be wrong with the charcoal canister. If not that, it's definalty something with the fuel evaporative system.

Posted on Sep 14, 2008

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Mike will it not start if you just lightly press the gas padle.? I mean does the key turns on the engine? If not the car needs a tune up - adjustments.

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I have a 1976 chevy chyenne super , and my problem is that my gas gage always jumps to over full every time I start my truck and I don't know where to start testing or how to start testing possible ways...


If you understand resistance in ohms, and you have an ohm meter you can test out the fuel gauge system. The gas gauge is essentially an ohm meter, and the fuel level sending unit is a variable resistor. as the tank becomes lower and lower on fuel, a float in the tank attached to a variable resistor sends a signal to the gas gauge, and that is how the gauge keeps track of the fuel level. Normally if the gauge pegs out when you start the engine, the sending unit in the fuel tank is bad, or the wire going to the tank has a bad connection. If you remove the sending unit you can check it with an ohm meter. A good repair manual available at most major auto parts stores will walk you through the procedure.

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I have a 1992 chevy caprice.when car sits overnight i go to start it and it cranks over probably 7or 8 times then starts and runs good.i had a 1977 chevy with a carburator and it fired up in about 1.5 to 2...


No this is not normal at all and you have a problem. FI engines should start immediately and run great without any hesitation. It can be a partially clogged fuel filter. Replace the fuel filter ASAP. It can also be a weak fuel pump or defective fuel pressure regulator especially on a 18 year old car. Fuel pump is located on top and inside the fuel tank. The tank must be removed to replace the fuel pump. After replacing the fuel filter and fuel pressure test will tell you if the pump is going bad.

Jul 19, 2010 | 1992 Chevrolet Caprice

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I need to know what kind of fuel pump to get for a 1989 chevy caprice


here is the part number for the fuel pump kit from Carter, everyone carries Carter.
CARTER Part # P74000 {In Tank Fuel Pump}Includes Wiring Harness $38.79

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1992 Cevy Corsica: Boiling over out of overflow? Gage Normal


This can happen if you have a blown head gasket...cylinder pressure enters the cooling system, driving the coolant out. To check this have a shop do a hydrocarbon test for the cooling system. Problem can also be caused by a bad cap, so check that first.

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My fuel gage is stuck at 3/4 of tank in my 84 chevy silverado


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I have a 94 chevy s10 and my gas reads empty while i drive.but when i shut off the truck the gauge moves to different readings.


Is......the problem--"the gas gage reads empty when there is fuel in the tank. OR, The gage moves when the key to turned off ?

If it's the first,
You will need to test the gage and through process of elimination, determin if the Sending unit inside the fuel tank has gone Bad.

If its the second ? - Electrical gauges will move when powered down. Normal

Testing the gauge may not be easy - just depends on your ability.
It is a simple 2-wire gauge circuit, when disconnect (usually need the fuel tank) the gage reads in one direction (either full or empty)
then when shorted-the gage reads in oppisite direction.

Of course you must select the correct wires or you may short out the wrong circuits!! Most GM vehicles use a purple wire & black wire.

A quick method I have used to check the in-take part of the gauge is this.
1st. know there is gas - 1/2 tank works best.
2nd driver's door open, key in run position, engine not running.
3rd gently lift up on the door then let if come back down, gently.
just enough to cause the gas to slosh around.
4th - keep an eye on the gas gage, a bad sending unit in the take will show up as a "twitchy" needle.

Of course, if the gage never leaves empty - sloshing won't work.
I have a known good sending unit I can plug into the vehicle and simulate different levels of fuel - if the gas gage works, I know the problem is in the tank.

Let us know.

Dave

Feb 28, 2009 | 1996 GMC Sonoma

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