Question about 1985 Oldsmobile Calais

3 Answers

Fuel delivery problem

The car dies going around corners and going up hills.
I have replace fuel pump and filter. The problem has been getting worse. Now the car will die just going down the road.

I have tried or investigated everything I can think of but have had no luck with anything. If someone could give me some ideas I would be extremely greatful.

Ronnie

Posted by TreasaMM on

  • TreasaMM Aug 21, 2008

    I am still having the problem. The vacuum lines have been replaced as well as the fuel pump. The car has electronic fuel injection. All hoses have been checked for vacuum leaks and are all tight.

    I am still at a lose. Thank you for any other directions I can look



    Terri

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3 Answers

mike kirschbaum

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There usually is a strainer in the gas tank. After 23 years, anything is possible. If you have a carburetor, replace it, or have it cleaned. If fuel injected, the big hose from the air filter could be damaged and shifting loose. If the engine doesn't see the right vacuum, it won't work right. Check all the little vacuum lines. Get a vacuum gauge, learn how to use it. Do a fuel flow test to see if your tank is clogged.

Posted on Aug 18, 2008

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Anonymous

Since your problem shows up while cornering or climbing, suspect the gas tank pickup. Sometimes it's a rubber tube inside which could have broken off, and can't pickup except when the car is riding level. If you're lucky, there is an access from the trunk. The tank might be rusty by now, putting in a new tank would be safer and easier than fighting with old one. You want to get rid of this problem once and for all. Park the car on a steep angle or tilt and see if it dies while idling. If your fuel injection has a return line back to the tank, it should **** air real quick and die. Do this with a low tank. If you can, check fuel flow right after it dies. If it pumps air, the pickup is broken, if it pumps fuel slowly, you have a clogged filter, but that would stop the car even on level ground. Check for extra filters in the fuel line, they can be anywhere.

Posted on Aug 22, 2008

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Anonymous

Since your problem shows up while cornering or climbing, suspect the gas tank pickup. Sometimes it's a rubber tube inside which could have broken off, and can't pickup except when the car is riding level. If you're lucky, there is an access from the trunk. The tank might be rusty by now, putting in a new tank would be safer and easier than fighting with old one. You want to get rid of this problem once and for all. Park the car on a steep angle or tilt and see if it dies while idling. If your fuel injection has a return line back to the tank, it should **** air real quick and die. Do this with a low tank. If you can, check fuel flow right after it dies. If it pumps air, the pickup is broken, if it pumps fuel slowly, you have a clogged filter, but that would stop the car even on level ground. Check for extra filters in the fuel line, they can be anywhere.

Posted on Aug 22, 2008

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