Car is 2003 SSEi — It’s a random occurrence. Will be driving on the highway and it’ll ping (can hear it and use premium gas). Sometimes it will happen after hard acceleration, but I reiterate, happens random and not often. Thinking a faulty ignition module but no codes thrown. Wondering if the ECM/PCM could be at fault here. I posted another topic in performance asking where I could take/send it to be tested to make sure all is in working order and everything is within specifications.
Any and all help appreciated. God bless and happy holidays.
Mystery engine shutdown
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rynmcdonald
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GothicPontiac
- SE Member
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- Year and Trim: 1984 Bonneville, base model.
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Re: Mystery engine shutdown
Yes those modules could be at fault.rynmcdonald wrote:Car is 2003 SSEi — It’s a random occurrence. Will be driving on the highway and it’ll ping (can hear it and use premium gas). Sometimes it will happen after hard acceleration, but I reiterate, happens random and not often. Thinking a faulty ignition module but no codes thrown. Wondering if the ECM/PCM could be at fault here. I posted another topic in performance asking where I could take/send it to be tested to make sure all is in working order and everything is within specifications.
Any and all help appreciated. God bless and happy holidays.
I'd recommend you have it tested by somebody who knows what they are doing, a multimeter isn't always enough unfortunately to work on those computers. Or just do a swap, should you find a decent deal.
Many family owned auto shops i'm sure would be capable of both.
"What the f*** is the point of driving, if the ride doesn't reflect the person behind the wheel?"
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rynmcdonald
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Re: Mystery engine shutdown
Aren’t parts on the vehicle specific to the computer? I changed a gauge cluster in my father's 2005 Sierra. It worked, but it stated it didn’t match the computer or something.
Hope that won’t happen if I get another ECM/PCM.
Hope that won’t happen if I get another ECM/PCM.
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nos4blood70
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Re: Mystery engine shutdown
Does your tachometer ever act erratically? That usually points to a bad crankshaft position sensor which is not an uncommon problem on the 3800.
-Car Guy Carl
"Penelope" - 2003 SLE - 250k Miles
"Sydney" - 2000 Honda S2000 - 101k miles
"Penelope" - 2003 SLE - 250k Miles
"Sydney" - 2000 Honda S2000 - 101k miles
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rynmcdonald
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Re: Mystery engine shutdown
nos4blood70 wrote:Does your tachometer ever act erratically? That usually points to a bad crankshaft position sensor which is not an uncommon problem on the 3800.
Never seen it do that since I have owned it. Exception being when a wire from the EGR grounded out. Caused loss of power and made some of my gauges go berserk. Short of that, no.