Car sputtering, jumpy and backfiring!!!
08-29-12, 02:29 AM
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Car sputtering, jumpy and backfiring!!!
At low RPMs the car jerks and sputters and backfires! What is going on and what do I do? It's so bad that I'm embarrasses to drive it right now. When it bogs down and then jumps it backfires really loud on the down side then it darn near yanks your head right off when it takes off. Please help me out if you can, this caused me to get a ticket today...as it bogged down I applied more acceleration and then it took off really fast. It jumped thirty mph within seconds which caught the attention of the police man.
I have to fix thisž
Mike bell
Deodorantdeeee
I have to fix thisž
Mike bell
Deodorantdeeee
08-31-12, 07:46 AM
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^ the s4 tps is on the side of the throttle body in the engine bay. It is located on the opposite side of the throttle linkage.
With engine up to operating temperature (fully warmed) and car off. Turn the key to "on". Go to the engine bay with a multimeter and probe the green wire with a red stripe with the positive (+) meter probe. Ground the negative (-) meter probe. Set the multimeter to read "voltage"... Now there is a flat head screw near the tps itself. Turn either clockwise or counter-clockwise ever so slightly. You want the multimeter to read 1.00 volts. If it is .98 v or 1.03 v etc. It's no big deal. As long as it is pretty close.
Be sure you do this as quickly and as efficiently as possible. You pretty much do not want the car to cool down before you perform this task.
With engine up to operating temperature (fully warmed) and car off. Turn the key to "on". Go to the engine bay with a multimeter and probe the green wire with a red stripe with the positive (+) meter probe. Ground the negative (-) meter probe. Set the multimeter to read "voltage"... Now there is a flat head screw near the tps itself. Turn either clockwise or counter-clockwise ever so slightly. You want the multimeter to read 1.00 volts. If it is .98 v or 1.03 v etc. It's no big deal. As long as it is pretty close.
Be sure you do this as quickly and as efficiently as possible. You pretty much do not want the car to cool down before you perform this task.
cambo
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