Question about 1991 Cadillac DeVille

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Timing won't set correctly on my 91 cadillac sedan deville

Didn't pass emissions when timing was set near twenty (drives smoothest there) but when set to 8 (where manual insists it needs to be set) first gear is such a problem that it won't go up a small inclined driveway. HELP!!!

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 59 Answers

SOURCE: No heat in 91 Cadillac Sedan Deville

I would beleive more that you have build up in the heater core. Try taking loose the heater hoses from the block and use a water hose to spray into one of the hoses letting it come out the other hose then switch hoses with the water hose and keep reverseing for 2/3 times each hose. sounds like stop leak may have been used in a prior time and may be blocking water flow.

Good luck,
Lugnut61

Posted on Feb 08, 2009

  • 83 Answers

SOURCE: turn signal light replacement on my 91 sedan deville

Under the hood, you should be able to find the socket for the bulb behind the lighting assembly. The back of the socket turns out about a quarter of a turn, then can easily be removed to replace the bulb.
It goes back in reverse.

Posted on Sep 14, 2009

johnjohn2
  • 5763 Answers

SOURCE: what does service emission mean on a 1996 cadillac

it means theres a emission component thats not working. may be a air pump valve if it has one, or a vent valve youll have to scan to figure out good luck.

Posted on Oct 20, 2009

  • 293 Answers

SOURCE: emission problem 1996 sedan deville

I would suggest checking your Oxygen sensor which will light up your service emission light. Check that and let me know Good luck

Posted on Dec 28, 2009

  • 173 Answers

SOURCE: Where is the transmission modulator located on a

located between the radiator and transmission more towards driver side. should have 1 bolt holding it in place a 10mm . it looks like a little canister silver/grey color. should be connected to a vacum hose

Posted on Apr 05, 2010

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