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Chevrolet Repair/1999 Silverado 5.3L Rough idol on cold mornings
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Question
On morning starts at 40 degrees F. and below.Engine has very rough Idol.Fuel pressure regulator was changed some time back.Recently replaced all injectors. What next?
Hi Tom....check the TPS. see if it is out of range cold. or sticking or binding. also check idle air control. remove and clead with air intake cleaner, do not use abrasives on it. also check EGR. these could all contribute to poor idle cold.... hope this helps
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Robert Summers
Expertise
domestic auto/truck repair, auto body, painting. I currently own a large auto/truck/marine repair shop. 40 years certified 310S,310T,310B in ontario Canada
Experience
40 years certified 310S,310T,310B ontario qualified, 7 years with GM have owned my own shop now for the past 27 years.was automotive marketing director for large auto parts supplier.
Organizations
CFIB (current) past member AARO and APAA.
Education/Credentials
grade 12 plus 2 years college. many aftermarket training courses
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