Got a 41 code the other day on my '91 along with rough running/loss of power followed by sudden return of power. Pulled TB to clean (fair amount of carbon build up), and TPS to test. Set up TPS according to manual (was about a hair off at 0.93mm between IDL-E2 - set, tightened screws, and marked), and re-checked my work. All readings in spec except VTA - E2 at WOT. Manual calls for 3.5-10.3 kOHM. I read 3.2-3.3 kOHM. Is that enough variance to cause concern?
What do the three letter acronyms stand for? I assume IDL=idle. What about VTA, VC, and E2? Vehicle electronics and measuring resistance blows my mind. I have no idea what exactly I'm measuring - just what numbers to look for.
While I was in there, I also replaced the VC gasket, VC stud seals ("doughnuts" on top of VC), and PCV valve/seal. All the people here who say the VC gasket is easy either know some sort of black magic wizardry to get it on, or are liars. That thing was a bear to get on. Took me longer to replace that than anything else.
What do the three letter acronyms stand for? I assume IDL=idle. What about VTA, VC, and E2? Vehicle electronics and measuring resistance blows my mind. I have no idea what exactly I'm measuring - just what numbers to look for.
While I was in there, I also replaced the VC gasket, VC stud seals ("doughnuts" on top of VC), and PCV valve/seal. All the people here who say the VC gasket is easy either know some sort of black magic wizardry to get it on, or are liars. That thing was a bear to get on. Took me longer to replace that than anything else.