Question about 1992 Oldsmobile Cutlass Ciera

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Car stalling Okay, I now know that it is not my EGR velve because I was not able to lacate it on my car. Could it possible be my headers that are plugged or not. I don't have the money to take it in to the shop so that is why I am looking else where for help.

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  • Oldsmobile Master
  • 5,568 Answers

The original problem needs to be mentioned but the chance that any part of the exhaust system is clogged is minimal.
The only things that could possibly clog are 1. Catalytic convertor 2. (very unlikely) the muffler.
Have someone listen at the tailpipe while the engine is turning with the starter.
There should be recognizable rhythmic noises, not a hissing. If it is hissing, the catalytic convertor is the likely culprit.

Posted on Jun 30, 2008

  • Steve Allison
    Steve Allison Jun 30, 2008

    I'm back:



    Your car DOES have an EGR valve since they are offered as replacement parts by countless auto parts sources.

    It is unusual not to find it on or near the exhaust manifold but I guess it could be located elsewhere and connected by metal pipes.



    If you are still going to try to fix this yourself, I highly recommend you purchase an aftermarket manual for your car which will serve to help you now and perhaps afford some protection from lying auto mechanics.



    Haynes or Chilton will have one covering your car and are typically under $20, a good investment.

    These can be had at nearly any auto parts store although the chains (Advance Auto, Auto Zone) are your best bets.

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Car problems


I don't know if you understood the function of the EGR valve but you may have found the answer for your stalling problem.

The EGR (Exhaust Gas Recirculator) is vacuum controlled and should only be open after the engine is not under heavy demand anymore.
Once it is open, it allows a small amount of exhaust gases to be recirculated into the intake and reduces emissions (doesn't make much sense to me either).

This small amount of exhaust gas is tolerated by the engine once the revs are up a bit and it isn't lugging or accelerating hard, allowing the vacuum to recover and increase.

If the EGR valve has failed, these gases are toxic enough to the engine air-fuel mix to gag it and it stalls. Not much difference is noticed once up to speed.
Yours is probably stuck open, allowing exhaust fumes to gag the engine when at an idle.

The valve itself, is normally located near or on the exhaust manifold, which connects to a header then on to the rest of the exhaust system, finally the tail pipe.
It shouldn't be too difficult to see the manifold and the valve itself is a pretty common type of vacuum controlled mechanism so it will have a fat disc as part of it and there will (should) be a vacuum hose leading to it coming from the intake manifold.
The major difference between this and other similar controls is that the materials used are able to withstand much higher heat than is encountered in other control useage.

Since some heathens (not casting aspersions ;-) ) disconnect the vacuum hose from the valve or block the hose inside to disable the valve since it does cost some gas mileage and can cause the kind of problem you are currently having.

Once you have found the valve, trace the hose back to its pick-off, detach it, hold one finger over the pick-off and **** on the hose (yeah, it's probably grubby, deal with it or make your hubby or S.O. do it :-) ).
If the idle is not affected, the valve is not functioning.

Some can be cleaned of the built-up crud that accumulates, others must be replaced.

Let me know if it helps -

Jun 28, 2008 | 1992 Oldsmobile Cutlass Ciera

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