pilotanpia wrote:
MT BOB wrote:
Lots of F53-460 fuel pump problems, and threads,on the net.
2 things you can try,cheap and easy,replace the TFI and the fuel pump relay.
Other things to try- at your risk- when it acts up,1-loosen or remove the fuel cap
2- when it acts up, throw trans in neutral, turn off and restart engine.
I tried the TFI aka Ignition Module which is located on the front apron between the left headlight and radiator. So, not exposed to engine compartment heat. Bottom line, it did not resolve the issue.
Thank you.
TFI is only one part, there is the ECM (Engine Control Module) which is the "computer" or "brain" that controls ignition timing and fuel delivery to the engine. ECM has predefined fuel and ignition maps and uses a variety of external sensors (some which you have replaced) to determine timing and fuel delivery.. ECMs where often mounted in the engine compartment near the windshield, not sure where it is on a Chassis build.. Failing ECMs can affect engine performance..
