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2G Tps and A/F Gauge

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DsmDanielson

Proven Member
104
0
Jul 13, 2016
Peoria, Arizona
I apologize in advice if this is the wrong thread, as I couldn't decide where it should go. In my defense, even as an experienced dsm'er, thus is such a noob question. First, if you look at the picture, my A/F ratio gauge gets stuck on stoich. I don't have any exhaust leaks so that can't be it. Whats strange is at startup the the gauge is blank with no lights up at all, like there is no volts, but as the car heats up, it pops up. The gauge works properly when I let off the gas and get back on it for a moment, but then coastlines again. Any thoughts? I know I need a wideband but I'm only doing 14 psi and a blinky gauge is a reference to see how my 02 is doing. Any widebands for sale? No 02 sensor cel and the sensor is maybe 1500miles old. Also, my tps will not stay at .5 volts. It fluctuates every time I blip the throttle. For example. Car starts up, tps is showing. 439 volts, I blip the throttle, it then rests at .232 volts. This caused my car to go into limp mode so I just disconnected it for the time being. Idle is a little rough from time to time and I'm using more fuel so is like to solve that issue as well. Thank you!
 

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TPS should be MANUALLY adjusted at the throttle body to .63V in Link and read as close to 5V at WOT as possible so maybe you need to adjust that to start with.
 
I'm
TPS should be MANUALLY adjusted at the throttle body to .63V in Link and read as close to 5V at WOT as possible so maybe you need to adjust that to start with.
Im aware of the adjustment procedure but if I'm not mistaken, the tps is supposed to be between .5v and .55 at idle and no matter how I adjust it, the tps changes every time blip the throttle
 
I set mine to .63 but when the car is running I get .65 so I adjust that part out on link. Maybe different on a 2g but I haven't had time to spend on my 2g yet. I was pretty sure it was the same, but like anybody I could be mistaken since we are different model years. You don't happen have a spare old one to try on do you or one you could borrow? It may be on it's last leg.

As a link, here is @GST with PSI's write up on TPS's....
http://www.dsmtuners.com/threads/adjust-your-tps.509898/
 
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