3800 engine stalls out as engine reaches operating temp

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May 12, 2017 | 03:11 AM

#11

Mad_Coachman

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Joined: Dec 2003

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From: Baldwin,New York

Mad_Coachman will become famous soon enough

Quote:

Originally Posted by pjmia96

This is the plug I was talking about. just give it a good shake with your hand once the engine reaches operating temp. See if the car acts up when you shake it.

He has a series 2 engine NOT a series 1 like you have.

May 12, 2017 | 03:16 AM

#12

Mad_Coachman

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Joined: Dec 2003

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From: Baldwin,New York

Quote:

Originally Posted by cdav59

Need a little help diagnosing this issue. Have a 97 old 88 with 3800 engine that starts and idles fine when cold but as it reaches operating temp it seems to be choking out. Has a new MAF sensor but if I unplug it then it will idle at operating temp just a little rough. I checked TPS and MAP sensors according to guides I found and they checked out fine. It does idle a little high about 1k rpm'*. Could the oxygen sensors be causing this?
If so is there a way to check them?

Take it to Auto Zone and have them scan for codes. I also own a 1997 Olds 88 and when the RPM gauge on the dash says 1000 RPM its actually about 824 according to my scanner.

May 18, 2017 | 11:17 AM

#13

cdav59

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Joined: Sep 2011

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Looks like vac connections need replacement, some are cracked. The fuel pressure regulator vac was dry when I pulled it off. I'll get it checked with a better code reader to see if there are stored codes I can't access with mine and get back to all with the results. Thanks everybody for the assist.