I was using EVOscan tonite and it showed my TPS being 69-71% when I went WOT. What could be the cause?(Im thinking possibly a faulty TPS, but not sure).

 

anyone???

 

what is the range of the tps? when you are sitting stationary idling, what does it say for TPS? and then floor it? the way you described the problem it just sounds like you aren't pressing the gas pedal all the way down.

if you are, then your TP sensor is most likely positioned improperly on the throttle body. adjust accordingly.

 

I was with him; when he floored it was anywhere between 50-70s. I did not get any logs idling. Im pretty sure he was pressing the gas pedal all the way down (accel enrichment was at 100); we took several logs with the same/similar resuts for tps value.

 

I will look at the TPS on sunday and see if theres any visable defects.

 

Normal value at idle should be 10-17% on most MUT loggers.. Most of the time we look at it as volts though.. I think .7 volts is the idles spec.. I think on my car it registers 100% at just over 3/4 throttle..


70% of the value of Evoscan and Mitsulogger is as a diagnostic tool, which means using it at idle, cruising around, you can pick up lots of valuable tuning data by doing that. Thats how most of us fine-tune our injectors since getting our trims "in check" ultimately allows our injectors to be scaled correctly. Plus drivability is 80% of what tuning is about...

Sounds like your TPS may need to be adjusted..

 

I'm getting 100% at full throttle and it goes down to 15~30%when i release and step without boost..

I'm really sorry for the super newbie question, but i have to ask, what's a TPS!! (we learn everyday!)

Wael

 

Throttle position Sensor.

 

.. Thanks!

I wish there was a way to get evosan/ecuflash info in a manered and organized way.. The searches sure help, questions here and there.. but there must be a sure way to get all this started..


Wael

 

There's no single resource for all of the info.. The purpose of aktivematrix was to document alot of this, but got offtrack since I don't have much time to do it myself.

 

Mjack,am gonna try and register in activematrix and check your posts.. Hope it'll get me started!

 

Does anyone know how to adjust the TPS?(thanks Mjack for the input)

 

another possibility, check to make sure your throttle cable isnt loose, and make sure its hooked up on all the cable brackets, ( the one mounted on the front of the valve cover that it loops through). even if that dosent fix it its still a good thing to make sure your throttle cable isnt loose.

 

Yes. It is adjusted be loosening the two screws that fasten it to the TB. You rotate the sensor until the reading is within desired range...retighten the screws.

Checking the throttle cable adjustment is also a good idea as mentioned above in case it came loose and is not opening the throttle all the way.

 

I would make sure teh tactrix cable isn't the culprit (as well as evoscan version). You can use mine to test/verify if you like.

James