96 F150 5.8 High Idle... and I've replaced everything! Please help!
#44
I had to file the TPS mounting holes in order to get the minimum setting of 0.5vdc.
The TPS just wouldn't rotate any more closed.
I hooked everything back up and checked the scan tool.... the TPS still reads 10%.
I started her up.... idle started around 1800 and then ramped down to 850.
It sounds normal now.
What an ordeal!!!
My advice to anyone having a high idle problem: get a scan tool and check your TPS open %. Anything more than 11%... adjust your TPS.
Thanks to all who contributed!
The TPS just wouldn't rotate any more closed.
I hooked everything back up and checked the scan tool.... the TPS still reads 10%.
I started her up.... idle started around 1800 and then ramped down to 850.
It sounds normal now.
What an ordeal!!!
My advice to anyone having a high idle problem: get a scan tool and check your TPS open %. Anything more than 11%... adjust your TPS.
Thanks to all who contributed!
#49
#50
The ECT (Engine Coolant Temperature) sensor... is it the same one that drives the instrument panel gauge? Or are there two different sensors?
The instrument panel gauge never gets above medium (normal) temp.
Update....
In digging around on the internet, it looks like there are three sensors. An air tem sensor mounted on the air box, a gauge temperature sensor mounted on the manifold, and the ECT mounted near the thermostat.
I'll have to verify that tomorrow. Hopefully, there is a test to determine if the ECT is good...
The instrument panel gauge never gets above medium (normal) temp.
Update....
In digging around on the internet, it looks like there are three sensors. An air tem sensor mounted on the air box, a gauge temperature sensor mounted on the manifold, and the ECT mounted near the thermostat.
I'll have to verify that tomorrow. Hopefully, there is a test to determine if the ECT is good...