Serious situation. My car has been offline 4 months...I bought my Supra and the Head gasket blew...no surprise there....enging swap with used japanese engine....and now my car will start rev a bit and the the car shuts off...I keep getting code 51 for the ac switch.. :banghead: .i cant figure it out what are some possibillites for the problem...anybody with a guess....is well appreciated...HELP! :banghead: :banghead:

actually code 51 is "no idle signal to ECU" also, it's prolly your TPS (throttle position sensor), i got a new one from autozone for next to nothing, when you put the new one on you should do it with a mutimeter to make sure it's adjusted right. Just in case that's not it then check your ISC valve, try cleaning it out if you haven't already, and make sure it makes a clicking sound when the car shuts off.

im getting a code 51 and poor looping idle and stalling if i dont turn up the intake screw to about 1200 rpms i got a new tps and idle sensor just need some more info on what pins to set the tps what pins and how many oms with throtle open and closed ect.. tks