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1995 Pontiac Grand Am rough loping idol!

Tiny
SPANKSTER
  • MEMBER
  • 1995 PONTIAC GRAND AM
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 11,600 MILES
My 1995 grandam 2.3 quad 4 engine has a lope to the idol and gets alittle better when you step on it but it is not performing like it should! I have bought a new map sensor and it did not help it. I put a new TPS sensor on it today and no better. What is the problem with this? Thank you!
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Saturday, May 31st, 2008 AT 7:18 PM

1 Reply

Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,749 POSTS
Not much goes wrong with this engine besides coil cover and spark plug wires. If you have not changed the ignition coil housing and done a tune up, I would start there. The coil cover acts like a distributor cap and on this model it causes crossfiring, like your describing. Let us know how you make out.
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Saturday, May 31st, 2008 AT 7:21 PM

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