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Tech Area => General Buick Tech => Topic started by: Scoobum on September 27 2015, 11:16:29 AM

Title: SES Lite On-Engine Cutting Out-No MAL Code
Post by: Scoobum on September 27 2015, 11:16:29 AM

Had a gentleman contact me. It's an 87 TR...stock. Engine dies out for a couple of seconds...SES lite comes on solid...engine comes to life again...SES lite goes out. No MAL code on the SM. This is intermittent. Any ideas?

Title: Re: SES Lite On-Engine Cutting Out-No MAL Code
Post by: Steve Wood on September 27 2015, 11:48:59 AM

try cleaning the chip and socket contacts and replug it?

Sounds like it is losing electrical power momentarily... might check the positive cable to the starter to make sure it is tight and not shorting against the downpipe or header before it gets to the starter.  Also make sure the orange wire is not frayed or somehow not making a good connection to the battery

Title: Re: SES Lite On-Engine Cutting Out-No MAL Code
Post by: Scoobum on September 27 2015, 01:55:06 PM

Steve, he lives 90 minutes away. I relayed the info to him. He's one of these guys that actually listens. :) I had him install a new fuel pump...hotwire kit...chip and injectors from Eric...AFPR... wires...plugs. ..boost gauge...FP gauge...recore d rad...water pump...and SM. Only thing I couldn't talk him out of was a 3" DP. He did take my advice and get an RJC tho. :) I'll keep you posted...and thanks.

I'm doing the valve springs on it next month.

Title: Re: SES Lite On-Engine Cutting Out-No MAL Code
Post by: daveismissing on September 28 2015, 09:17:22 PM

Whats the frequency of the failure? ECM getting hot?

Title: Re: SES Lite On-Engine Cutting Out-No MAL Code
Post by: Scoobum on September 29 2015, 04:13:19 PM

Quote from: daveismissing on September 28 2015, 09:17:22 PM

Whats the frequency of the failure? ECM getting hot?

Dave..it's intermittent. I never asked him about the ECM getting hot. Waiting to hear back from the things Steve asked to check. The car is in Kingston...90 minutes away.

Title: Re: SES Lite On-Engine Cutting Out-No MAL Code
Post by: bescurred on October 10 2015, 08:45:59 PM

Not sure if you got this figured out...

I had that happen once and my positive cable was arching on the driver side manifold....HT H  :powersix: