kaotiq

whats up CL. Im near the completion of my Soarer motor swap but still cant get the car to start. It is cranking just fine and now it's throwing a check engine code #12 which is Lack of RPM signal according to the Supra manuals.

I know it could be the crank sensor. How do i go about checking that? Do i check for electrical resistence so that it is getting some sort of power? how do i know if it just dead? thanx!

quadoptix

whoa wth????





WHADDAP GEOFF!!!!

kaotiq

hey mike... yea my car is having problems. can you help?

got_trd

how did you read codes if you have a 1jz swap?

kaotiq

well... the check engine light blinks 1 then 2. OBD1 lexus/toyota cars share the same codes.

http://www.troublecodes.net/Lexus/




Could a shorted out RPM wire cause this?

got_trd

ooh ok ic.. I thought you used a scan tool

Tommyd1919

It would be hard for me to believe that the car wouldn't start do to a tach signal... I've never done a 1JZ swap in a SC so I could be wrong but its my belief that the code you are getting could be false anyway due the fact that the car isn't starting.. I've had false code before.. But anyway, what is the car not getting? Fuel, Fire, or what... I would first make sure you are getting power every place you are suppose to... make sure the crank sensor has power. Make sure the fuel pump is coming on and pressuring up... Use a noid light and make sure the injectors are pulsing..9 times out of 10 the reason things like this happen is because something small is overlooked... If it is spinning over that means the lower part of the harness is prob. correct (starter, start sirnal etc..) If you still are stumped I would direct this question to the MK2 and 3 guys on Supraforums.. Alot of those people are pretty brite when it comes to the 1JZ stuff... I had a RB swap in a 240 kick my butt for about 3 days once I checked everything 100 times turns out it was simply the plugs not allowing the car to start, so leave no rock unturned check everything..