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'92 Old.'s Achieva Quad 4 Oil pressure problem.
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Fuzzylugnuts
New User
Mar 18, 2008, 10:51 AM
Post #1 of 6
(3134 views)
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'92 Old.'s Achieva Quad 4 Oil pressure problem.
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I have a 1992 Oldsmobile Achieve S with a Quad 4, 2.3L engine. When I got the car the oil pressure gauge would read way over (the max) 80 psi. I found that when driving around for about 15-20 min's, and coming to a stop, the oil pressure gauge would read under 20 psi. and die, just like that. The only time I would be able to move the car again is to wait 20-30 min's before starting it. It would start and run, but another 15-20 min's it would do it again. (shoot up passed 80 psi while driving and shoot back below 20 psi when stopped in drive & die)
I changed the oil 10w-30, oil filter, and oil pressure gauge. Now it will read just under 80 (while running) and just over 40 (while stopped in drive), BUT will do the same thing as before.
During the time I drove it, it would be fine idling in Park or Neutral. This would only happen in R or Drive after the car warmed up.
I have talked to a few people, and told me that it could be the ignition coil, or fuel regulator. (When the hose is disconnected from the regulator it still does the same thing)...?
Can you please help me out, I don't want to start buying parts left and right, until I know the problem.
Thanks!
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Double J
Veteran
/ Moderator
Mar 18, 2008, 3:36 PM
Post #2 of 6
(3123 views)
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Re: '92 Old.'s Achieva Quad 4 Oil pressure problem.
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So it sounds like the oil pressure reading concern is solved BUT now your trying to find the reason for the stall concern...correct?
When it stalls out ,it won't restart for 30 minutes?..
Only stalls in reverse or drive when warm?
Is there any check engine light on or coming on?..if so post code/s
Many a thing can cause a stall ...
Any more info would help us help you
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Fuzzylugnuts
New User
Mar 18, 2008, 7:46 PM
Post #3 of 6
(3120 views)
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Re: '92 Old.'s Achieva Quad 4 Oil pressure problem.
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1. Yes
2. About 30 min's, Yes
3. Yes when warm it stalls in Drive and Reverse only.
I forgot to say that the oil light stays on all the time, and never goes out. (the oil level is great)
And that the oil pressure gauge goes down slowly from 80 to 40 takes a few min's than stalls out in Drive.
I tried to get the RPM's up to about 2000 and drop it to drive, but still nothing, just dies?
The check engine light works and does not come on at all.
It was tested (at an auto parts store) by a computer and nothing came up.
I told them the situation and they told me about the 2 parts that I stated before.
So I have no idea what to do, if you guys don't have any ideas.
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Fuzzylugnuts
New User
Mar 26, 2008, 11:33 AM
Post #4 of 6
(3094 views)
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Re: '92 Old.'s Achieva Quad 4 Oil pressure problem.
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Okay, I have found that it could be (IAC) Idle Air Control Valve?
I haven't yet tested it.
Would that be something that would cross your mind when reading my problems?
Thanx for the help!
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Mar 27, 2008, 11:23 AM
Post #5 of 6
(3086 views)
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Re: '92 Old.'s Achieva Quad 4 Oil pressure problem.
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"Oil light is still on all the time!" With just that without a separate tester anything could be in the mix up to "game over" for this engine??
T
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Double J
Veteran
/ Moderator
Mar 27, 2008, 3:15 PM
Post #6 of 6
(3084 views)
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Re: '92 Old.'s Achieva Quad 4 Oil pressure problem.
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Not sure if I have much to offer ...BUT...
The main thing would be first to have the oil pressure tested with a mechanical gauge...see where that is..if there is a problem there..cause if there is an oil pressure problem...like Tom said..it could spell trouble for this engine.
The IAC could cause a stall but I don't believe that would cause it to take 30 minutes to restart...
Thats usually along the lines of a fuel pump problem or an Ignition (spark) problem...BUT...
These were known for (some were anyway) that the wiring harness to the IAC would chafe on the throttle cable bracket....had to be repaired and rerouted....
Just a thought there...
YOu mentioned the oil pressure "gauge" was replaced..was it the "gauge" or the oil pressure sending unit/switch?
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