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mountie · 12-24-2013, 11:29 AM

I am waiting for another TBI for my '88 5.7..... The shaft is a tad loose causing a vacuum leak. The engine runs a bit rich due to the leak, and a slight rise in RPM causing the SES to turn on / off. The leak has been there for a while, but I didn't notice, because the rise was slight and I got used to the idle, not realizing the RPM change.

No codes.

12-24-2013, 11:29 AM	#10
mountie Registered User Join Date: Jun 2011 Location: Bradenton, Fla. Posts: 1,100	Re: Service Engine Soon Light Ghost! I am waiting for another TBI for my '88 5.7..... The shaft is a tad loose causing a vacuum leak. The engine runs a bit rich due to the leak, and a slight rise in RPM causing the SES to turn on / off. The leak has been there for a while, but I didn't notice, because the rise was slight and I got used to the idle, not realizing the RPM change. No codes.