bus933s
Forum Newbie
Posts: 5
Reg: 07-23-12
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07-23-12 12:59 PM - Post#2251244
92 olds cutlass supreme 3.1. cranks, won't start. was running, shut off 30 min, now wont start since. has spark, fuel pressure is 42. spraying carb cleaner causes engine to run briefly. what else is testable and how can i test it?
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trainwrecker823
Contributor
Posts: 104
Reg: 07-25-08
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07-25-12 06:17 PM - Post#2252185
In response to bus933s
My 92 Lumina had the same problem. Had spark, had good fuel pressure, and a quick burst of ether (bad, I know, but it's what I had) would make it fire up for a moment. A new Crank Position Sensor solved my problem.
The sensor can be tested, if it doesn't break when removing it. But for the price, you're better off replacing it. I think I paid about $12 six years ago (in MA). It is a common part to fail, and can be a bear to replace. I may have posted a how-to for this job. So rather than type it out again, I'm gonna see if I can find it and I post a link to it.
Welcome to Chevytalk!
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trainwrecker823
Contributor
Posts: 104
Reg: 07-25-08
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07-25-12 08:03 PM - Post#2252223
In response to trainwrecker823
Well, I learned something new today!
Follow this link: http://easyautodiagnostic s.com/ignition_gm/ign_mod...
It will explain (on page 4 & 5) how to test your crankshaft position sensor WITHOUT removing it from the vehicle!!!
I feel dumb, yet enlightened, all at the same time!
I noticed, however, that the link above doesn't describe the location of the crank position sensor well. So, IF you need to replace it, you will find it in the block, facing the firewall, towards the front of the engine (or, passenger side). I've replaced these from the top by rotating the engine forward, but found it a little easier to work from underneath.
Let us know what you find, and good luck!
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bus933s
Forum Newbie
Posts: 5
Reg: 07-23-12
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07-26-12 05:19 AM - Post#2252303
In response to trainwrecker823
Thank you for the reply and assist. But I am confused. On my Galant, I had to replace the crank position sensor because there was no spark. So on the cutlass the CPS controls the fuel (injectors)?
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bus933s
Forum Newbie
Posts: 5
Reg: 07-23-12
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07-26-12 05:23 AM - Post#2252304
In response to bus933s
I should have read the link 1st. It states if there IS spark, the CPS and ICM is good. I have spark.
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trainwrecker823
Contributor
Posts: 104
Reg: 07-25-08
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07-27-12 06:55 AM - Post#2252626
In response to bus933s
I'm soooo sorry! I forgot to mention that I suffer from TMB (too many beers).
My car DID start AND run with the ether-start. Unlike yours, which would only run until the carb cleaner burned off. Also, I had ALREADY replaced my crank-sensor long BEFORE needing the starting fluid...
So, out of shame, guilt, and an overall I-dunno-whats-wrong-w/ur- car-feeling...and quite possibly a hangover...I did some research, and found this:
http://www.doityourself.com/forum/passenger-cars- s...
I have never had an injector problem in 200k miles on my 92, or on my two previous 3.1l's, but I have heard that failing injectors on the 3.1 is a common problem. The above link explains how to test them. The poster ("joeneedshelp") had EXACTLY your problem-and ONE bad injector that caused his headache.
Hope this helps. I'm gonna go get a beer now...I hope you enjoy one too when your car is working and you're posting what fixed it!
PS: I'm really not a drunk, but I do like to drink! 
Edited by trainwrecker823 on 07-27-12 07:00 AM. Reason for edit: No reason given.
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bus933s
Forum Newbie
Posts: 5
Reg: 07-23-12
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07-27-12 04:56 PM - Post#2252789
In response to trainwrecker823
No worries! Thank you so much for the link - I think that is exactly what I need. I hate the thought of removing the intake to get to all the injectors, but that seems the most likely and least expensive next step.
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bus933s
Forum Newbie
Posts: 5
Reg: 07-23-12
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07-29-12 01:36 PM - Post#2253392
In response to bus933s
So I got a noid light and plugged it in an injector harness and got no light with the key on. So no power to the injector? It also never lit when cranking. For grins I pulled the plenum and ohm'd each injector - they are all between 1.5 - 2 ohms. IDK where to go from here.
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trainwrecker823
Contributor
Posts: 104
Reg: 07-25-08
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07-29-12 05:27 PM - Post#2253471
In response to bus933s
Silly question, maybe, but did you check the fuses? There is a fuse block in the glovebox, and a second one under the hood/right side. I don't recall which one had the "fuel inj" fuse/can't look @ mine as it got totalled 2+years ago...
Trust me, I mean no insult here, as I am the Master of "forgetting to check fuses first"...
In case you already did, and fuse(s) ARE good, I'm gonna keep searchin...I'll post back as soon as I find something that might gitcha runnin again!
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trainwrecker823
Contributor
Posts: 104
Reg: 07-25-08
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07-29-12 06:04 PM - Post#2253486
In response to trainwrecker823
Ok. Did some more searching. IF the fuses are good, and no injector pulse on ALL injectors...I found a link:
http://www.justanswer.com/chevy/3yboz-1991-chev y-l...
(I have used justanswer.com before for help with my sick cat-I highly recommend them.)
Good luck. I'll keep checking back!
Edited by trainwrecker823 on 07-29-12 06:09 PM. Reason for edit: No reason given.
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