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95 Lumina 3.1 still not running
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Proa42
User
Dec 3, 2009, 9:55 PM
Post #1 of 7
(1762 views)
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95 Lumina 3.1 still not running
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On November 20 I posted that my APV stopped running. I replaced parts based on the trouble codes, and nothing.
I took the beast to Mr. Goodwrench. They found nothing mechanically wrong and suggested I change the ECU. I did.
NOTHING
The engione fires under cranking conditions. If I crank long enough, the engine warms up and will idle. But, step on the pedal and, "POP, POW, POOF, PFFT, THLUMP, , , then nothing.
Mr. Goodwrench decided on the ECU because the timing was retarding and advancing improperly. I suspect that it wasn't the ECU after all, but the EST (Electronic Spark Timing). However I haven't the faintest idea where that is. (Back in the day there was a vacuum advance on the distributor).
Once again the new enginie stuff: - Coil
- Distributor
- Spark-plug wires
- Spark plugs
- MAP
- TPS
- Fuel filter
Anyone out there with a solution?
I just installed new bearings, tie-rod ends, brakes, ball joints, in addition to the engine stuff. I'm not prepared to see these new parts go the scrap yard.
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Sidom
Veteran
/ Moderator
Dec 3, 2009, 10:24 PM
Post #2 of 7
(1756 views)
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Re: 95 Lumina 3.1 still not running
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I went back thru your old post and I guessed I missed it but didn't see any posted codes.....
Fuel pressure looked good. At this point I would like to see a vacuum reading @ idle & high rpm and a backpressure reading would be real helpful.
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steve01832
Veteran
Dec 4, 2009, 8:11 PM
Post #4 of 7
(1732 views)
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Re: 95 Lumina 3.1 still not running
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According to this diagram, there is no MAF sensor. It is strictly MAP.
Steve
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Attachments:
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58910250.gif
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Hammer Time
Ultimate Carjunky
/ Moderator
Dec 4, 2009, 8:27 PM
Post #5 of 7
(1726 views)
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Re: 95 Lumina 3.1 still not running
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I suspected that. Alldata wasn't clear about it. It showed labor time for the part but no location. It's because it's a TBI 3.1. They only used that in the MPV, I believe.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Proa42
User
Dec 5, 2009, 9:58 AM
Post #6 of 7
(1716 views)
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Re: 95 Lumina 3.1 still not running
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Original Codes:
MAP, TPS , Vehicle SPeed Sensor.
MAP and TPS at the same time. I replaced the MAP and TSS after voltage tests. At this point I was able to start the engine, as described, but then got a VSS fault.
I've read that a faulty Park/Neutral switch would generate a VSS code. But, would that explain the symptoms?
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steve01832
Veteran
Dec 7, 2009, 5:41 PM
Post #7 of 7
(1703 views)
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Re: 95 Lumina 3.1 still not running
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The VSS is the vehicle speed sensor. That sensor is in the output shaft housing. I strongly doubt that will cause the problem.
Steve
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