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Old 03-26-2011, 07:25 PM   #1
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I have a 1992 Oldsmobile 88 Royale LS 3800 engine. Does this model have a ASD relay? And if so where is it located. I have looked in the engine fuse box but there are six relays there and no diagram. The relays are all the same. Is one of these the ASD?

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Old 03-26-2011, 07:35 PM   #2
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I looked around and find no information on your car having a auto shutdown relay.
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Old 03-26-2011, 08:21 PM   #3
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Sorry, to hear that. This vehicle ran all day and then on second starting completely shut down. Now, no spark, no power at coil end of the ECM wiring harness. New EMC; still no spark.
I got Code 58 which, depending on code checkups indicates either a KeyPass problem or low battery. The latter is more possible but even with new battery attached I have no spark.
I was having a fuel problem prior and was forced to tow it to the mechanic. Changed the cam sensor and crank sensor. I really don't want to drag it back to the shop at a cost of $140 towing and $165 per hour mechanical charge.
Any other ideas?

Thank you,
Rick
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Old 03-26-2011, 08:42 PM   #4
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Do you have another key to try. Pass key will shut the car down.
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Old 03-27-2011, 01:15 AM   #5
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No, I don't have another key. I have seen that it is possible to bypass the security system through a series of resistors splade into the orange wires at the base of the steering column.
It didn't have a problem starting prior to turning off. It ran for roughly 3 minutes or so and then just shut down. I still can crank the engine just won't catch. I have changed the coil in recent months so I know it isn't that. The only thing I haven't gotten to test in the electrical end is whether power is getting to the ECM.
The wiring harness only indicates power on one of the portals and that one is the red wired one on the end. The remainder appear dead irrespective whether you are cranking the engine or not. I thought it might be the harness but thought I'd double check fuses and relays first. I thought for sure it was the ASD.
The car had a series of shut downs prior to this. It would shut down for no apparent reason and not restart. But if you waited a while or all day the next time it would run. I thought it might be a faulty relay heating up and resetting.
I don't know I am starting to get to my wits end.
I appreciate any help you can offer.
Thanks, Rick
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Old 03-27-2011, 09:59 AM   #6
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If it'* any type of fuel pump shut down then you would have no fuel pressure. So check that. If you have pressure it'* not the issue. Being a intermittent problem leads me to think it'* a electrical issue. I have seen 2 times now where the ignition harness has moved and rubbed on the harmonic balancer shorting out and shutting down the engine. Give that a real close look.
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Old 03-27-2011, 01:15 PM   #7
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Okay, when the car shut down, I ran a scan test on the OBD1 and got these codes.
31, 41, 43 & 58
I thought they were erroneous because I had just had the cam sensor changed. And when I disconnected the battery, the codes obviously disappeared. On a second check of the OBD, the only code to reappear was 58.
So, it quite possibly could be the cam sensor. But the ECU did not pick up those error codes the second time. This lead me to believe that they were misquotes.

Thank you for all your help. I look forward to your suggestions. And will try to find in the manual as to checking the cam sensor for a failure.

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Old 03-27-2011, 05:45 PM   #8
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the 31,41,43 could happen when the engine stalls sometimes if you didnt have the 58 i would say you need a cam pos sensor or ck pos sensor, but you may have two problems or maybe just the vats module. the resistor in the orange wire only bypass the need for the key with the resistor in it or bad ign reader, there are a few ways to bypass it or replace it just do a search for vats bypass
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Old 03-27-2011, 06:36 PM   #9
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Thank you! It is a possibility but does a VAT shut down the whole system or just the fuel supply? I can turn the starter but it is like there is no fuel. I can hear the fuel pump working and I changed out the fuel filter.
Unless anyone else has a solution I am going to have to put back in the hands of a mechanic who has the proper tools and space to work on a vehicle.
It is too damn cold to be monkey wrenching up here. It has been a long winter. Where is Spring?

Thanx, Rick
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Old 03-27-2011, 06:53 PM   #10
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i would think if thats it you should get some indication on the dash like security light flashing. if not it may be crank pos or cam or ignition control module, i dont how you could tell which though
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