Question about 2000 Pontiac Bonneville

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Car chugs while accelerating. changed spark plugs and wires, fuel pressure regulator, and fuel pump could this be a bad coil pack

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Yes it could , try having the computer scanned for any codes and see if theres a misfire code, if it where a coil there should be a misfire code with the cylinder thats missing then you will know which coil it is, also the fuelpump is pushing enogh preasure? low preasure would cause this also. try the codes first, autozone parts store scans for free. hope this helps.

Posted on Aug 27, 2010


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My daewoo lanos 1999 model can start and drive it has no power if you try to accelaret the car then cut off or just reduce the speed whats the problem

Walter: The most common cause of acceleration issues lies in the transmission. However, suggests:
Inspect and test all the following:

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
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EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
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Open spark plug wires.
Ignition coil/Coil packs defective.
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Cap and rotor.

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1 Answer

Engine light flashes when accelerating to speed over 65mph.

Consider a ground out (bad wire) to the coil pack? Or low fuel/no fuel pressure caused from a dirty/clogged fuel filter or bad fuel pump? A qualified mechanic can measure the fuel pressure and fuel output. Good luck.

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My 2006 silverado 2door 4.8l pickup sputters from take off on anytype acceleration,why???/

Did you check your spark plug wires or coil packs? Not sure which one it has. I also check your fuel filter.

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1 Answer

My car is chugging it feels like the fuel isn't getting through. I have changed the spark plugs and about to change the fuel filter.

dont just change parts without knowing--scan car at a parts place 1st-------it cud be a failin fuel pump or pressure regulator----or an egr valve--dirty injection system-----worn plug wires------fuel system pressure test or ignition inspection may be in order

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92 explorer sport missing at idol and acceleration

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I have a 1999 crown vic,i love this car,however,it always has ran great,but i recently had a lugging problem at acceleration,it kinda chugs when you go to take off and then goes fine for about a mile or...

could be a number of things,regulator or fuel filter or fuel pump and/or strainer or even throttle position sensor,or bad coil pack or packs...check for engine codes,if nothing then its not an electrical sensor,like throttle position sensor,or coil packs,then try fuel filter,check for vacumm leak at the regulator,check the fuel pressure,if lower than 60 lbs approx.then probably a fuel pump or clogged pump strainer

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1 Answer

95 aspire sputters and back fires when you try to accelerate , changed fuel filter, fuel pressure is fine, new mass airflow sensor

Check spark in each cylinder. You may have a bad plugwire or coil pack. Make sure fuel is spraying from every injector.
You can remove one plug at a time, plug it back into the plug wire and lay it on top of engine block, have someone else turn motor over and you can view plug to see if it is sparking. Do this to each plug. If you have one or two plugs not firing, you may have bad coil pack.

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1 Answer

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1 Answer

Bad stumble on acceleration pops through t- body.

Sounds like the fuel pressure regulator. Could also be that the timing jumped. But I'm leaning towards the pressure regulator. Hope that I could help. Best wishes.

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