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2002 Buick Lesabre Intermittent misses at idle and running
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Posted at Thu Mar 18, 2010 2:03 pm |
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By
thgjhight,
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Give Feedback | Votes: 0 |
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Engine Performance problem
2002 Buick Lesabre 6 cyl Front Wheel Drive Automatic 106,00 miles
2 weeks ago Check Engine, Code P0102. Engine starts easy, runs smooth 99% of time, but sporadically cuts out for 1 or 2 seconds, then runs again for a minute or 2 before another occurrence.
Have replaced MAF, Air Filter, Plugs & Wires, Fuel Filter, MAP, PCV, and TPS, all to no improvement. No Vacuum leaks. Seems to run better when cool in morning, has more frequent misses when at normal temp.
Based on lots of 3800 V-6s out there with 100K miles does anybody have an educated guess as to where I look next for a solution? |
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Posted at Fri Mar 19, 2010 9:49 pm |
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By
rasmataz,
Certified 2CarPros Master Technician |
 (23535) Give Feedback | Votes: 489 |
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Hi thgjhight, Welcome to 2carpros and TY for the donation
You practically got everything that I'd suggest-okay have the oxygen sensor/s, knock sensor,camshaft position and crankshaft postion sensors and to include a fuel pressue checked-Try running injection cleaner thru and see what happens. Bear in mind this one can be a nightmare being an intermittent problem- |
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| Find out more about your Buick Lesabre Repair Question: NEED MORE
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Posted at Sat Mar 20, 2010 9:29 am |
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By
thgjhight,
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Give Feedback | Votes: 0 |
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Thks rasmataz. Turns out I had added some Rislone fuel injector cleaner (6 oz) to a nearly Empty tank, and the engine quickly started running better, even peppier, with no missing. Check Engine light wentt out.
But as soon as I added about 10 gallons of 87 octane, the intermittent misses returned, Check Engine light returned.
What would this indicate??? Possibly contaminated gas has left something in the tank? or lines? or fuel pressure regulator? It has a new fuel filter, but maybe it has already been contaminated.
Thanks again for any help you can offer. I am tired of replacing sensors just because they are on the list. |
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| Find out more about your Buick Lesabre Repair Question: NEED MORE
TECHNICAL INFO? Car Repair
Manual - Questions by Topic -
First Things to Check - How to Car Repair - How Does it Work?
- Donate Here |
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