do i check the volts when the engine running or do i just turn the ignition on??? its suppose to be .500 rite???

 

you need the ignitoin on, engine running or not, doesnt matter.

should be .45 closed and around 4.5 fully open.

 

but the volt changes when i turn the engine on

 

Don't know what engine you've got, but it would make sense that the voltage changes. On my '90 Si there is a vacuum diaghram that holds the throttle open slightly to aid in starting. Once running, the engine supplies vacuum and pulls the diaghram free of the throttle linkage.

 

key on
or
ENGINE running ?

 

engine running

 

See if this helps any...

http://www.geocities.com/chipman_13/...shoot.html#TPS

 

this might sound stupid but when you check the tps with a volt meter, were do you put the probes if the tps plug is hooked up to the tps............... and please don't tell me i should put the probes up my ***....lol

 

We're putting new cover sheets on all our TPS reports.

 

did you get the memo?

 

I got the memo. I've got it right here. I just forgot.

 

anyone else????
and LSDelSol i'll make sure you get another memo

 

bump

 

read voltage from the center wire , ground the meter and pierce the wire on the TPS with it plugged in and the key on

 

thanks for the info doc!