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i have a 2004 isuzu rodeo 6cyl. 3.2 , 2wheel drive. about 60k miles on it. About a year ago while driving, i got a check engine light and shortly after a reduced power light. and car couldnt go over 30Mph. The codes said that it was a tps sensor. replaced it worked fine , Now recently , a year after that repair. I got the same problem check engine light. Again the codes state a bad tps sensor. took it to a mechanic he said everything checks out fine. He said problem could be that the computer needs to be re-programmed so that the tps is in correlation with the computer. Is this possible, or is he just trying to get rid of me, because he couldnt diagnose this.Please help nearest isuzu dealer is several miles away. And they charge 100 per hour labor rate, and i dont have that much money. Please help
Optional Information: Year: 2004Make: IsuzuModel: rodeoEngine: 3.2liter 6 cyl Already Tried: took it to a mechanic about a year ago, he replaced the tps, problem was solved , a year later same problem. Except this time around i took it to a different mechanic, and the codes are bad tps sensor. But he tested it and says that it's working correctly. And that everything else checks out okay. He said that it's probably that the computer needs to be re-programmed to the tps. And says that he couldnt do it, because he doesnt have the equipment to do that. And the dealer would probably have to do that. Is this possible or is he just telling me that because he couldnt diagnose it. It seems like when certain not all mechanics cant figure a problem out , the easiest scape goat is to blame it on the computer. Please help me. I just got back to work after being laid off for awhile, dont have that much money.
<p>re-programming can sometimes be an issue. but with a tps sensor there are a couple of things that can cause this code </p><p> </p><ol><li>dirty throttle body / throttle door ( do not attempt to clean the tps is sensitive on drive by wire cars .. must be careful)</li><li>binding throttle shaft.</li><li>bad tps or wiring</li><li>I suggest cleaning the throttle bore carefully by holding gas pedal down with key on and wiping the throttle bore out. clearing codes </li></ol><p>start here .. inexpensive. other than than the mechanic will have to check the tps output voltages and be sure the computer is interpreting the voltages correctly.</p>
that answer didnt help me much. the mechanic looked at all of that and nothing
There arent any technical service bulletins for the reprogramming of the pcm for TPS codes. usually telling a customer "needs reprogramming" IS a way of saying "dont Know there is no valid reason for problem" if the output voltages are correct The voltage should be TP1 about 0.4V , TP2 about 4.6V and TP3 about 4.6V
there is nothing else to check besides the throttle bore.
An intermittent glitch can be happening in the tps sensor itself during movement. There is no other explanation. Since it has been a year. The dealer will most likely want to replace it again.
Experience: 20 years in the industry A.S.E. master certified