Question about 1996 Oldsmobile Achieva

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1996 Achieva 3100 V6, on hot days if I shut car off then try to restart it about 30 mins later, it misfires like crazy, no power, backfires in the motor, and some times stalls out and wont restart til it cools off, about 2 hours later. Can anyone please give me some ideas on where to go.

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Hey there Beth. Welcome to FixYa. If you have a check engine light on, you need to take your car to Autozone or Advanced and have it scanned for error codes, if it is on. That light comes on when there is a problem with the vehicle, detected by the computer. You should change your spark plugs, coils, wires, coil pack, and distributor cap. I would suggest the whole package, get a tune up. The big thing is the check engine light though, if your is on. This can tell you what to change and where to look. So, if it is on, take it to get scanned. They do it for free and it only takes a minute or two. Your timing belt/chain may be slipping, causing the backfires. You may need many things done. The scan is step one. If your check engine light is not on, step one is the tune up. Make sure it is not overheating. Overheating can cause a car to shut off. Make sure there is coolant in the car. Check your air filter. Clean your battery wires, terminals, and post. Make sure all the hoses are hooked up correctly. What your doing is getting the car to run its best. This helps diagnose other problems.

Posted on May 20, 2011

  • bethmishata May 20, 2011

    Thanks Rickyrt441, I keep forgetting to say that I cant get codes checked as the port has no power running to it. I have had the whole dash apart and cant find anything wrong with any wires. It always runs hot not overheating just above half way mark when in traffic, but open roads it goes down. Fan is working, just changed the thermostat, and drained the system then refilled it. Coils, the thing they sit on, plugs, wires, ECT, throttle postion sensor were just replaced last year.

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Can i use a 1997 Olds Achieva O2 sensor on a 1996 Olds Achieva?? both are V6 3100 motors..


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have you had the fuel system cleaned as it could be dirt.also have you cleaned the throttle valve(plate)as when these get dirty it can cause this type of condition.it could also be a fuel supply problem like fuel filter,fuel pump,injectors.the ignition circuit could have a problem also like the coils,the ignition module,you don`t say if you replaced the plugs when changing the wires.it could also be the crank sensor or cam sensor possibility.this should be checked out at a shop if you can as some of these things need experience and equipment to diagnose.

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1 Answer

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