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The mkiv Supra Owners Club

i have a non turbo 93 j spec supra with problems


wwe

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hi all need some help

i have a non turbo 93 j spec supra with problems

1- o/d off light flashes

2- engine light and stop light comes on together

i put it on a diagnostic machine and it came up with

code 41 throttle position/sensor signal

code 42 speed sensor signal circuit

so i got them checked out and the wires checked but no faults found

i have been told it may be my main ecu is that true or could it be some other fault

 

thanks to all who help a supra in need

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Could be dodgey joints on the odometer, I had a bunch of these faults, went through the checking of the sensor - wiring (good lord there is a lot of this) - converter/delimiter (I know you don't appear to have this bit but just fyi) - in the end the odometer was removed and appeared to have some ropey solder points on it! Re-soldered dodgey looking connections onto the board (weird oozing yellowy stuff and flakey bits that looked out of place) - and have not had the problem come back since! Don't know if this will help, just another avenue to explore... As an aside, how do you find a non mph speedo on these wonderfully speed camera populated roads? (my friend had an MR2 with kmh only on it - but did his head in so he got it converted :))

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I actually think that the odos work on the same principle at very least (I know there are some unpleasant re-soldering hacks to get the m to light up on the odo unit rather than the km so assumed they were the same but have not set eyes on a uk one) - and are possibly the same units with two different shorts on the board?

 

I don't think the idea was to do the conversion to mph using the odo!? Just to fault find?

 

I would be interested any rate to know if your friends odo fits/solves problem.

 

As mentioned the common thing to do with the imports is to just whack a 110/115mph face plate on the existing one (no electronics needed) - better is to get the conversion module [sC+TSD] from somewhere like Thor (sounds like you have one).

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