1990 sevile 4.5


kgriggs75
10-04-2008, 04:30 PM
Customer has a 90 seville with the 4.5. the car is dying at red lights and while slowing down from highway speed. there are no ecm codes in the computer. I did notice that the spark degree was changing quite rapidly right before it would die.

DFBonnett
10-05-2008, 11:12 AM
Dirty throttle body? Bad or dirty EGR valve or solenoid?

kgriggs75
10-08-2008, 01:23 PM
ok pulled the throttle body. lots of carbon on the butterfly valves. lots in the bottom of the intake.

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