Question about 1988 Cadillac Sedan DeVille

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How do i find out why my 1988 cadillac deville is surging and what can i do about it?

Nothing

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  • Cadillac Master
  • 3,679 Answers

Surging is usually a fuel problem , check the accelerator is opening the throttle smoothly , loook for any signs of wear or holes in the air and vacuum lines , remove the air filter and see if it improves things , if all ok i'd get the timing checked , when was the last time the vehicle had a service ?

Posted on Nov 28, 2014

Testimonial: "had plugs and wires replaced 3 days ago. up till then my husband had it and did not have any maintenance done on it at all! Have reclaimed it since then, now trying to get it back in the running shape it was in. It started as soon as mechanic put new plugs and wires in and new battery but runs for a about 20 seconds and starts to die at which time the car starts surging and idling up and down until it finally shuts off. It has a carb fuel injected."

  • steve Nov 28, 2014

    get the fuel to carb checked as must be related , has it the stepper motor accelerator ?

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

shop242
  • 214 Answers

SOURCE: how to repair a water pump on a 1988 cadillac deville

Buy some tools..

Posted on Mar 17, 2009

  • 7 Answers

SOURCE: 1990 Cadillac Deville, surging and loss of power

u need a new engine

Posted on Jun 07, 2009

K3rn3lkill3r
  • 72 Answers

SOURCE: 1988 sedan deville cadillac runs good until

Sounds like the battery is weak or the alternator isn't providing enough amps to keep the engine running and power the lights at the same time.

Posted on Dec 04, 2009

Testimonial: "thanks , it sounds logical. Should I replace the battery? The guy who owned it before me just replaced the alternator."

  • 22 Answers

SOURCE: Where is the thermostat located on a 1988 Cadillac

follow the uper radiator hose to the top of the motor ond it is under there

Posted on Jan 26, 2010

  • 111 Answers

SOURCE: 1988 cadillac sadan deville. i have replaced havc programer.

GM products with digital climate control used a temopature sensor module which is located under the hood in the heater box. They are known to fail. It souns like your issue lies there. It is sort of triangular in shape and has a single electrical plug with 7 or so wires in it. (I ran a slvage yard for years and sold a ton of these!) There are a series of #'s like a factory I.D./part # that I used to identify and interchange with. I don't know if there has been a generic replacement released over the years. Hope this helps!

Posted on Jan 04, 2012

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Have an 88 deville that bucks&surges at any cruzing speed.she accelarates just fine.sometimes idles rough,sometimes not.have replaced dist.plugs,wires,t.p.s,egr valve,ism.Im thinking injectors.


try checking the coil for leaks. if it looks discolored anywhere on the coils then it's leaking. i had the same problem with mine. sounds like the same thing mine was doing untill i replaced the coil. could also be the drive gear for the distributor to but highly unlikely

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Sounds like the battery is weak or the alternator isn't providing enough amps to keep the engine running and power the lights at the same time.

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Here's the diagram you requested. Best of luck on your repair and Thank you for using Fixya!
Greg

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