If my throttle position sensor voltage was set to the wrong setting, what would I notice? As soon as it was adjusted, I noticed a rough warm up in the mornings and a kind of rough idle.

 

I am not sure about the crossfire since I have no experience with it. But the TPS voltage is critical to idle performance on the TPI systems. You might look in the shop manual and get the right settings and compare it with what yours is set to.

:cheers:

 

My Haynes says that your CFI has a cold start module that blows a fuse after so many miles (doesn't say how many) and needs to be replaced.

Your TPS serves the same purpose as on TPI cars, it provices throttle position and raising the base voltage can give a little more "pump shot" when the thorttle is suddenly opened. I have mine set just below the point where the ECM would throw a code and no ill effects.

However, since your min idle requires special tools and procedure the TPS setting may be critical.

 

Cool! So does your haynes say where that fuse is and what number to replace it with? Is it in the location of all my other fuses? That would be awesome if that was the only problem. Would it ever be a bad idea to replace all my fuses? My car has 230,000 miles on it. If I should, do I need to disconnect my battery?

I think when we adjusted the TPS it was to spec. Can you see if there is a different voltage setting between 82 and 84. The person who helped me out owned an 82 and I believe figured they were the same since they both have crossfire. Thanks a lot!

 

All the manual says is that the miles is up, the module blows the fuse to protect the ECM and then the module needs to be replaced. But is doesn't show a pic or location of the module nor id the fuse. Maybe your friend's '82 has a similar setup.

It gives the TPS setting as 0.525Vdc +/-0.075Vdc.