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Tim West
Tim West, ASE Certified Technician
Category: Chevy
Satisfied Customers: 4638
Experience:  ASE Certified Service manager of Firestone
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1990 Chevy Blazer 4.3L (S10), stalls out low idle/off idle.

Customer Question

1990 Chevy Blazer 4.3L (S10), stalls out low idle/off idle. Restarts right away.No service History, recently replaced fuel pump and sending unit to fix fuel gauge problem (gauge only went up half way, problem still there)
Submitted: 7 years ago.
Category: Chevy
Expert:  Tim West replied 7 years ago.
Thanks for visiting Just Answer,
Is there a check engine light on?
Try this, when the low idle is present, try adding some extra fuel to the throttle. See if the exrta fuel makes it idle better or worse. By extra fuel I mean, spray some wd40 or carb cleaner into the throttle.
I suspect the extra fuel should make it run worse, this could indicate weak spark.
Let me know up to this point.