Question about 2002 Pontiac Grand Prix
Vehicle will not go over 25 mph
Check for a restriction of some kind, fuel--air--exhaust. Use a gage and check fuel pressure. What was the actual 02 sensor code? Can you tell if the system is running rich or lean? In park, will the engine rev normally?
You don't think the tranny has an issue?
Posted on Dec 15, 2014
Testimonial: "used my gage to check fuel pressure and its at 55 lbs. The system was running lean on the left bank. In park I can only get the engine to rev between 2500 and 3000 rpm. once it hits about 3000 rpm it wants to bog down. Just had a rebuilt tranny put in about 1year 5months ago"
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Posted on Jan 02, 2017
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