High idle on EFI conversion.

[itsabronco]

I have just completed another conversion on a 1977 bronco. I had an issue of high idle and couldn't seem to get it down. I figured out that it was the throttle position sensor. I had three of them but I was not aware that they can look almost exactly alike, but be wired different.

I was unplugging sensors one by one to see what would happen, and when I pulled the TPS plug, it idled fine and I was able to adjust it with the idle screw.

I had almost all of the components off of 1 car but the TPS was just a grab from the junk yard because the original one was broke. Piecing together A whole EFI system can be tricky since there are different parts out there that look the same.

I'm just passing this info along because I have seen a few others having idle issues. This solved mine and hope it can help others.

 

[br0nc0xrapt0r]

I have just completed another conversion on a 1977 bronco. I had an issue of high idle and couldn't seem to get it down. I figured out that it was the throttle position sensor. I had three of them but I was not aware that they can look almost exactly alike, but be wired different.

I was unplugging sensors one by one to see what would happen, and when I pulled the TPS plug, it idled fine and I was able to adjust it with the idle screw.

I had almost all of the components off of 1 car but the TPS was just a grab from the junk yard because the original one was broke. Piecing together A whole EFI system can be tricky since there are different parts out there that look the same.

I'm just passing this info along because I have seen a few others having idle issues. This solved mine and hope it can help others.

Thanks for the heads up, I'll keep this in mind for my swap if mine turns up bad!