93Z286Speed

Heads cam, done..
58mm Tb is on the car now its a holley..

with the stock TB on i get no codes, With the 58 i get check engine light. I checked the TPS, it was down to 0 voltes.. i sloted it and got it up to .037 at idle.. and 4.27 at WOT... still get a light with the 58..

and it idles wereid.. almost like it wants to die at first then kinda realizes its being dumb and then comes up... and then just slowly increases idle.. from around 850 to 900-1000-1100.. dosent seem to really get past 1100..

I took the IAC out and cleaned iy all up and used some WD40 on it got it all nice and pretty heh and made sure the connection was good...

i also reset the IAC using the hold throttle down technique....


anyone have anything else i can look for? im confused as to why the 58 will toss a code

wile2k

You gotta get that TPS voltage up. It should be ~.5v at idle (.037 is way too low).

Also, do you have the capability to scan the car to see what the IAC counts are doing when it is idling erradically?

93Z286Speed

no i cant scan it

seems as if when the light pops on the idle comes up.. and its kinda steady.. just played with it more..

went up to 1400 that time (acording to the stock tach anyway) but you can hear its deffinitly high.

Ima take the TPS off and slot the holes a little more
and see if i can get it up more...

if anyone else has any other sujestions feel free... also should i probly put the TPS on the stocker and see what the volate on that is? and try and match it? (just thought of that now)

93Z286Speed

i turned the idle adjustment up a little to get the TPS to come up.. its at .80 now.. and still throwing an SES light... i dont understand why this TB tosses a code and the other one dosent...


whats the trick to seeing what code it is with a 93

93Z286Speed

k i figured out how to scan it..

seems like its 2 fast flashes and then 2 more..

so i assume thats code 22?
what is that?

93Z286Speed

i awsner my own questions it seems today..

22 Throttle Position (TP) sensor circuit (signal voltage loiw)

(thank you shoebox's site, saved me once again)

so i know its TPS related... that makes me somewhat happy

93Z286Speed

i was being dumb was at .080 and i was thinking it needed to be at . 020-090 not .2-.9 hah missing a little voltage got it now

ill go play more..