bad tune or bad case of the tps

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mixeds14
Posts: 601
Joined: Tue Feb 26, 2008 12:44 pm
Car: 240
Location: nc

Post

so my car idles fine the arf are 14.4-15.5 at about 1000 but then warms up n goes down to 7-800rpms with afr at 13.4 to 14.1 wich its rich but adjusting the idle screw would fix that, now my problem is when i put load on the car i cant even go to 2000 rpms without boggin unless its real gentle n it bogs down with no power so i let offm i give it gas again gently n it goes up in speed but still no power....i cant even get it to boost cause it just f-up my afr are 14.3 n dropping as i incrase rpmalso i notice that if i hit the gas real quick it will do 1 of 2 things, it will eather rev up to 5000 n act like theres a rev limiter or it will start to bog as soon as i hit the gas(it is an auto by the way so no transmission sensor for the fisrt part)

, but i dont know if its just a bad tps cause i can unplug it while running n nothing happens so i dont know what the heck is going on....

no boost leaks,ngk6 gap at 32, check the maf readings n its dead on the spot...new temp sensor,cap,rotor, and the plug wires are good, i take them off 1 by 1 while running n the rpm drops so i assume there good.

anybody came across this before, any ideas????????????


Alsontime
Posts: 140
Joined: Fri Jan 19, 2007 6:29 pm
Car: 1993 Nissan 240SX Convertible
Location: North Carolina

Post

What are you using to tune the engine?


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