94 explorer mania swap

[RubyRanger16]

I just a did a manual swap on my 94 explorer and having some idle issues no I don’t have the manual ecu in it, it’ll idle at 1500rpm but then when I push the clutch in it’ll drop down to the correct idle 700rpm and stay there but the second i release it idle jumps right back up, unplugging the iac keeps the idle perfect, does this sound like I need the 94 manual ecu or is it something else?

 

[lil_Blue_Ford]

So, the auto computer is known to cause idle issues.

That said it also sounds like you have another issue. Vacuum leak, bad IAC, problem with the TPS, you’re gonna need to run some checks

 

[SenorNoob]

Good idle with the IAC unplugged says something is wrong to me. It should idle very low without IAC.

That said if it can be consistent while the clutch is pressed, maybe find the computer signal wire from the clutch and put it on a hidden toggle for adjustable idle? LOL

 

[RubyRanger16]

So, the auto computer is known to cause idle issues.

That said it also sounds like you have another issue. Vacuum leak, bad IAC, problem with the TPS, you’re gonna need to run some checks

I figured it be high my friends 94 with manual swap idle at 700-800 definitely not a vacuum leak if it idles fine with clutch in, I had a spare iac i replaced it still same issue

 

[RubyRanger16]

Good idle with the IAC unplugged says something is wrong to me. It should idle very low without IAC.

That said if it can be consistent while the clutch is pressed, maybe find the computer signal wire from the clutch and put it on a hidden toggle for adjustable idle? LOL

I have a spare iac I swapped it in still same issue, the truck would probably die if it was unplugged at the correct lower rpm, I also think it maybe computer since the check engine light also comes and goes