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Discussion Starter #1
I have looked on many posts about there 2.8 tbi reving high and mine hase ben doing this resently and i have replaced the map sesnsor and the iac and it still does it and i was wondering is the tps on these motors adjustiable and if they are how would i go about ajusting it or should i just buy a new tps

ps its a 91 s10 pickup 2wd 2.8 5 speed with 251000 miles on it
 
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