1996 Chrysler LHS Engine shakes a lot when accelertating

1996 CHRYSLER LHS
12,000 MILES • 6 CYL • FWD • AUTOMATIC
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MIKE LUND
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For the past year, whenever I use any non-Chevron gas, the engine shakes so much on acceleration, I think one of my tires has gone flat. I've tried alternating Chevron with Costco/Safeway, but usually more than tank of non-Chevron gas results in bumper to bumper shaking on acceleration. I'm trying to figue out if it's an oxygen sensor, fuel filter or what. I can't afford to start replacing parts on a hunch, or pay a mechanic $85/hr to track it down.
Jul 27, 2008 at 3:24 PM
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BMRFIXIT
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u can do so
by checking for codes as a 1st step
auto zone offer scan for free
or u can try the key cycle self diagnose
and it goes like this
cycle the ignition key on off three time
codes should appear in the odometer area and or check engine should flash the codes
let me know

o2 sensor the most common but lets check for codes 1st
Jul 27, 2008 at 8:56 PM
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MIKE LUND
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I tried the 3 cycles of ignition key. No codes appear, but the check engine light flashes in odometer area. To add to the confusion, this morning I was on my way to buy gas and there wasn't any hesitation or shaking...engine is running smooth as silk. I will head to Auto Zone to see if they can detect anything with their computers. Thanks!
Jul 28, 2008 at 1:30 PM
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BMRFIXIT
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check engine is blinking the codes (* ** is code 12 ***** ***** is code 55 )
best take it and have it scanned at auro zone
let me know what do u have for codes
good luck
Jul 28, 2008 at 4:31 PM
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MIKE LUND
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I tried to cycle the ignition 3 times again, now nothing shows up on the dash. To my recollection, the first time I saw the "Check Engine" light, it flashed the code for 12.
The car runs smooth as silk now...I'm beginning to think it has a faulty sensor or there's some glitch between the oxygen sensor and the computer.

By the way, Auto Zone has a pending lawsuit and no longer offers the free computer check. They also said they d=no longer have the OBDII computer needed to check the engine codes. Guess I'll have to wait for the next round of shaking to determine the problem.

Thanks for your help.
Jul 31, 2008 at 12:05 PM
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BMRFIXIT
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the OBDII scanner the are about $ 50
and very easy to use
if u like doing your own work that will become a very handy tool to have

and save u a lot of time , possible money too



good luck
I m here if u need more inf. just let me know


thank you
Jul 31, 2008 at 6:45 PM