1995 Bonneville SSEi
07-18-2011, 04:04 PM
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1995 Bonneville SSEi
I have a 1995 Bonneville SSEi 3.8sc. One big problem I have is when the outside temperature reaches around 90% or above and after the car is driven for a few minutes it starts to die out and eventually I can barely keep it going. If i step on the gas it will not respond, it will jerk back and forth like I am taping the gas pedal. I have had this problem for 2-years. If I put the car in neutral when i am moving I can rev the engine but it takes a few seconds of pumping the gas before it revs and then it will only go to a certain rpm, i think around 3.5 or so and the break up. I have had fuel pump and filter checked and both are ok.
I have heard possibilities of things like Oxygen sensor, Super Charger, clogged catalytic converter, bad coil.
Any help would be appreciated.
I have heard possibilities of things like Oxygen sensor, Super Charger, clogged catalytic converter, bad coil.
Any help would be appreciated.
07-18-2011, 05:40 PM
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Do you have any codes? Do you see the SES light flashing at all? The supercharge wont cause this. It would just cause a loss of power, but not a huge loss. I would test the coils, and plug wires. how old are the plugs.
07-18-2011, 05:50 PM
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Also I have had codes for several years. The EGR valve always shows up and I have replaced it twice and made no difference.
I do have a vacuum leak on the upper EGR tube which I am still trying to seal because I have not been able to locate a new or used one for the Super Charged engine.
I do have a vacuum leak on the upper EGR tube which I am still trying to seal because I have not been able to locate a new or used one for the Super Charged engine.
07-18-2011, 06:18 PM
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Well, if you have been driving with a leaking EGR tube, your AFR has been off. I would suggest fixing the known problems. Check at your local salvage yards. The pick and pull yards should have something for you.
07-24-2011, 11:31 AM
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1995 Bonneville Oxygen sensor
I have just purchased a oxygen sensor of ebay and realized when I got it that i would have to splice the wires together, there is no plug attached. The problem is that I do not know which wires to attach because the colors don't match. I know where the wires are supposed to go from the new sensor, like purple and white are heater, grey is ground and black is signal. But i do not know where to connect them because I do not know the destination of the original wires which are purple, tan, and 2-brown.