Question about Oldsmobile Cars & Trucks
1999 Olds Cutlass...Have an evap leak check engine light issue for 3 years. changed bad fuel pump and light went out the same day. did a tune up and coil packs and car ran great. almost 6 weeks later, check engine light came back on for an evap leak. I need to know my options on what it could be. changing the fuel filter this weekend, and getting it smoked next week. already have a new gas cap, crank shaft sensor, upper half of engine rebuilt. and now just CONFUSED!!!
Getting a smoke test is the right direction to go in.
The computer vents the gas tank to the vapor canister while the engine is running. It also pressure tests the system for leaks. Some where between the gas tank and the vapor canister there may be a leaking hose or valve. Or it could be the gasket on top of the tank where the pump assembly went in.
The gas cap could have been a source for the leak, the other things are not involved.
Posted on Apr 24, 2013
Testimonial: "See, I thought maybe it was a line or something when the fuel pump got changed because it literally went out right after the pump got changed. the pump now is only 6 weeks old but the car is running great. better than it has in the 4 years i have owned it. that's why i am so confused. "
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Posted on Jan 02, 2017
i had a similar problem and called the dealer during lunch hour. i talked to a mechanic, the distributor in these vehicles is plastic, and is prone to cracking.not just the cap but the body also, I have been taking the cap off and wiping the moisture out of the cap. or replacing the cap but the problem is I need a new distributor. just a cheep way to get rolling is cleaning the inside of the cap, especially when it is very damp or the outside temp changes alot during the day. good luck.
Posted on Jul 03, 2009
If wiggling the wires cured the code, then one of the wires is broken inside the insulation. Pull on each wire one at a time. look for the colored insulation to stretch, this will be the broken wire. For the other car that wont rev up, this is a common when the catalytic concverter is plugged up. This will also cause MAF codes, and in turn, TRAC OFF light.
Posted on Oct 17, 2008
SOURCE: 91 LEGACY STARTED RUNNING ROUGH
The cylinders are numbered as on the spark pack you changed. You might have done better putting the seafoam in the tank as an injector cleaner. Not sure why you changed so many parts, you seem to know how to get the codes from test connector lead hookup and the blink pattern. You might also want to check the fuel rail pressure and the crank and cam angle sensors. Before replacing the injector, swap the #4 injector with the adjacent one and see it the code moves with the injector or stays put. If the code stays on #4, then check the injector wiring, if it moves clean or replace the injector.
Posted on Mar 21, 2009
probaly a fuel pump its common for vehicles to do that the best thing to do next is a fuel pressure check to verifiy its the pump
Posted on Apr 15, 2009
SOURCE: 1999 grand cherokee when iscan the vheicle dtc code is p0441 So i checkED purge solonoid and leak detection pump and gas caP AND CHANGE ALL NEW. AFTER 3 OR4 DAYS IT COME BACK. wHAT SHOULD I DO?
smoke test for leaks.
Posted on Jun 03, 2009
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