Question about 1999 Buick Regal

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Buick Regal GS 1999 no starts after having washed engine (done before). Engine turns over, fuel pump comes on - pressure OK, no ''check engine light'' noted. Mechanic changed ignition module and Camshaft Position Sensor to no avail. If the VAT system has failed would the fuel pump work?

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  • univet Jun 05, 2010

    WASHING had nothing to do with it what-so-ever. It was just the little rodent nest someplace near those wires and I assume it must have been near where the PCM unit is located in the air intake. My mechanic did find a nest in there but said that there appeared to be no damages there. I will take a look-see and see if I can tell where they spliced the wires and report back soon. Thanks for all the input I've received. Nice knowing people care.

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  • Buick Master
  • 2,100 Answers

I wash my engine all the time too. The only thing I can think of that you might have done is get a waterproof seal on or near the coil pack wet. If you have a compressor, take out the plugs and blow them dry. The vat thing, I am unfamiliar with, Unless it is the anti theft system, which is a ****** to fix if it goes wrong. I know it kills just about everything, why not the pump? But if your engine turns over, that is not it. Check the oil. Check the stuff that got the wettest. Hope this helps.

Posted on Jun 04, 2010

  • 2 more comments 
  • univet Jun 04, 2010

    Thanks for the input. I did dry everything out with a heater under the hood for 24 hours. We have removed the plugs, checked the coil output, etc. Everything in order and as I thought I mentioned, we do have the proper fuel pressure measured at the engine. The VAT (Vehicle Anti Theft ) system could still be a problem in my book, but my mechanic says that the fuel pump would not operate (as it does) "if" the VAT system was a problem. I also still wonder about the Crank Position Sensor. I'll probably transfer the car to a GM dealer today as we are going nowhere presently.

  • Ned  White
    Ned White Jun 04, 2010

    Sorry I couldn't be of more help. It could be a bunch of things, If the starter turns, it is not the vat, when they shut down, everything shuts down. Did you try squirting fuel in the throttle just to see if it fires? At least you can narrow it down if it does. You have the vat and the electrical stuff, and seeing that water and electricity don't mix. Most of the sensors are waterproof, somewhat, and the alternator is water proof. You have the inlet air temp sensor and the variable inlet system, I'm wondering if these would cause no start if they got wet? Take off the air filter and see if it is soaking wet. I have blasted my engines with a pressure cleaner , never had a problem, you must have caught something just right. But with the new ignitions, it's not like the old days of a distributor that can't get wet. Go back after the coil pack again, hit it with the compressed air. Good luck.

  • univet Jun 05, 2010

    Well ... problem SOLVED. Had the vehicle towed to a GM dealership and they found that rodents had chewed and broken the wires that go to the PCM unit. RUNNING FINE NOW.

  • Ned  White
    Ned White Jun 05, 2010

    Well that's good you found it, I had a rat or a squirrel get in my 66 T-bird and chew through the fuel line and the spark plug wires, Went out to start it one day and , whoosh!!! Just a small fire. I had an extinguisher handy and out it went. Hosed off the engine and replaced all the chewed up stuff, no problems.
    So what happened, you washed the bare wires and shorted something out? Or the washing had nothing to do with the car not starting?



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