i'm not sure if this is the correct forum for this, but i suppose this is a "general engine question." first off, i am clueless when as far as electrical diagnostics are concerned. i have a multimeter but i've only used it to check my coil once. i'm pretty sure my tps needs set, because when i unplugged my iac connector and started the car to set the idle, and it ran at like 2800 rpm, it said in the book it should have been at about 400. basically im just going to expose 2 wires on the tps sensor and hook up the multimeter to them right? which wires are they, and what setting do i use on the multimeter? thanks,
Shaun

 

TPIS and IAC adjustment is covered rather well
on the Technical article page.

here: TPS and IAC

very easy, my friend and I are playing with it
right now for the 88 Vette to pass emissions.
Co2 level was high and thus .. failed

if that doesnt help, me or somone else will
chime in.

Fuel Injection is cake compared to the carbuerator (My opinion)
everything is done for you, its all computer controlled.

Improving it however .. is another story

 

well that article is what i was going off of lol. like i said i know squat about electrical diagnostics. i understand that i need to check the voltage on a connection but thats about it. it says using jumper wires, make a connection allowing some room for the vom terminals to contact the jumper leads and read the tps voltage. i dont know what jumper wires are lol. are they just regular wires i stick into the terminals? just have the 2 wires sticking out, and check the voltage there? thats pretty much the only thing that could make it idle at 2800 with the iac disconnected right? i have adjusted the idle without disconnecting the iac and have it set at about 1150 in park and 800 in gear. anything i could have screwed up by doing it with the engine running and the iac hooked up?

 

Jumper wires are short pieces of wires, usually with alligator clips on each end of them.

In the case of the TPS sensor, you unplug it and clip one end of each wire as described in the instructions. Then you can probe the clips (or even clip the probes also) with your multitester.

It has the effect of having your circuit unplugged, but still having power to it and having access to read it with a tester.

You use to be able to buy a bag of twenty or so from radio shack for a pittance. Or it isn't too hard to rig your own.