5.0 and 5.7 Discussion, 1979 Seville fuel injection? in Cadillac Engine Technical Discussion; I am trying to troubleshoot my 79 seville without much luck. The car is flooding at start. The only way ...
I am trying to troubleshoot my 79 seville without much luck. The car is flooding at start. The only way it will run is WOT or with the tank fuel pump unplugged.
I have changed the fuel pressure regulator and cleaned the injectors. The injectors were fine and fuel pressure is 39psi at idle. The car sat in my garage for 2 years, when I put it away it ran fine. I did not do anything to preserve it. I hate just replacing components and don't know where to go for help.
Automobile(s): '80 Fleetwood Coupe, 1994 and 1995 Mercedes 140 Coupe
Re: 1979 Seville fuel injection?
Service manual is a must. Quick check without any manual would be to see if BOTH temp sensors measure the same resistance when stone cold. The 2 sensors are exactly the same part number. Make sure you have a good vacuum signal to the ECU under the dash. A vacuum leak will make the thing dump fuel. Get a spare ECU from ebay and keep it with the car in case....
Some people swap the 2 temp sensors while looking for replacements. 1 is much more important than the other but I don't know which.