I am trying to adjust my TPS and with the 0.012 feeler gauge installed in the throttle stop, the lowest resistance I get is 27 ohms I can't get continuity or 1 ohm. I pulled the sensor off the motor and it appears to be the lowest resistance between pins A and B is 27 ohms. I have read here it should be around 1 ohm or continuity. Can anyone help here. Do these go bad?

year and engine?

i've always set TPS's by voltage?

The advice I saw on here was to measure the resistance between Terminal A and B not voltage. Hm This is one of the threads I was going off of.

http://geometroforum.com/topic/1341780/1/

Anyone weigh in??

If you cannot zero the TPS, then it's bad. What problems does the car have? Loping idle?

The lowest resistance I could get was 27 ohms. A little bit of idle surge(unsteadyness) when you first put in neutral and take your foot off the gas. When your in 1st or 2nd gear and take your foot off the gas, like if your in stop/go traffic and then you want to accelerate all of the sudden the car surges/jerks forward. I thought I fixed it last week by advancing the TPS in one direction but then my gas mileage went to 25 mpg. At the time I didn't take a meter and check the resistance but ultimately what it was doing was raising the Idle resistance. After pulling the sensor and looking at the resistance as it is moved (clockwise/counterclockwise) (cant remember which direction.) It's lowest is 27 ohms and then it moves to about 100 ohms then it suddenly makes a jump to much higher resistance, in other words its not linear. I think that explains the sudden jerky acceleration. Anyone have a good/cheap source for a new one. I've looked online they want about $180.00 for one. Wow there sure isn't $180.00 worth of parts and technology there. Ebay has a few throttle bodys with them installed might take a chance that way can pick one up for around $40.

What year is your Metro? I have a good used one here that I know works. I installed a new one, but found out my old one was fine.

Mine is a 92, do you still have it thanks

Mine is a 92, do you still have it thanks

auto or manual? and number of wires going to your tps?

mine is a manual, I don't think there is a difference in TPS between the manual and auto tranny's

mine is a manual, I don't think there is a difference in TPS between the manual and auto tranny's

prior to 92 there was a difference, but in 92 they changed them so that the auto and manual tps were the same.

They have a huge impact on mileage. I bought one on Ebay which btw had the same resistance readings as the other one. I installed it to see if there was an improvement and my mileage went from 44 mpg to 38 mpg. Needless to say I switched back to the original one. I'm going to contact the seller and see if I can return it as it does me no good. I also went to several wrecking yards and found 2-3 and they all measured resistance levels around 25-40 ohms at the lowest so I haven't seen one yet that was less than 1 ohm.