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02 buick hesitates loses power
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dougcrv24
Novice
Aug 24, 2009, 1:13 AM
Post #1 of 10
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02 buick hesitates loses power
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I have an 02 buick century 3.1 v-6. The car runs, but hesitates and chugs at low speed and during acceleration, also loses power at highway speeds. Seems to run fine at a stand still and while reving the motor, and will accelerate if you jump in the gas. I have changed the plugs with AC delco plugs, changed the MAF sensor, and air filter....still have the problem...help?
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Hammer Time
Ultimate Carjunky
/ Moderator
Aug 24, 2009, 1:27 AM
Post #2 of 10
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Re: 02 buick hesitates loses power
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It sounds like it may be misfiring. If so, you want to make sure it has relatively new plug wires and it that doesn't resolve it, it's likely a bad coil.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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dougcrv24
Novice
Aug 24, 2009, 1:32 AM
Post #3 of 10
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Re: 02 buick hesitates loses power
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Thanks. I'll try the new wires and see what happens. Where is the coil located if I need to replace it?
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Hammer Time
Ultimate Carjunky
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Aug 24, 2009, 1:40 AM
Post #4 of 10
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Re: 02 buick hesitates loses power
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Just follow the wires back to the coil. I believe they are mounted right on top of the rear valve cover. You will first have to determine which cylinder is misfiring to know which coil is the problem.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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dougcrv24
Novice
Aug 24, 2009, 3:07 AM
Post #5 of 10
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Re: 02 buick hesitates loses power
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I have the new wires and will be putting them on shortly. I also had a local shop check to see if there were any codes stored....none other than a miscellaneous misfire code in the history. If the wires do not solve the problem how do I determine which cylinder is missing, and thus which coil to replace?
Thank you again for the guidance.
-Doug
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Hammer Time
Ultimate Carjunky
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Aug 24, 2009, 3:14 AM
Post #6 of 10
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Re: 02 buick hesitates loses power
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If it's a constant miss, then you can find it with a spark tester but if you getting a PO300, then it's likely not just one cylinder and you could have other issues.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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dougcrv24
Novice
Aug 24, 2009, 5:28 AM
Post #7 of 10
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Re: 02 buick hesitates loses power
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I have now replaced the spark plugs, wires, 3- coil packs, MAF sensor, and air filter. $350 later I still have the same problem with no codes showing. Fell like I am chasing a ghost.....and he's getting expensive to chase. Where do I go from here?
thanks.
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Hammer Time
Ultimate Carjunky
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Aug 24, 2009, 5:37 AM
Post #8 of 10
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Re: 02 buick hesitates loses power
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Maybe you should stop throwing parts at it and have it diagnosed correctly. I advised you to use a spark tester that costs $4 and instead you replaced all the coils. You could have had it diagnosed professionally for well under $100. Your description doesn't give me the info I need to know what your experiencing.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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dougcrv24
Novice
Aug 24, 2009, 5:42 AM
Post #9 of 10
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Re: 02 buick hesitates loses power
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Fair statement. As I mentioned I did take it in earlier this morning and was told that without codes to follow they could spend several hours trying to diag the problem. I thought putting on the wires and the coil packs looked easy enough before authorizing $300 or so for a diagnosis. I'll take it back to them. Thanks for trying to help.
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Hammer Time
Ultimate Carjunky
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Aug 24, 2009, 5:45 AM
Post #10 of 10
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Re: 02 buick hesitates loses power
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If they want $300 to diagnose that problem, then find another shop. I own a shop and the max diagnostic I charge is $82. The wires it probably needed anyway but not all 3 coils.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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