forbsey777 Posted June 6, 2014 Share Posted June 6, 2014 Hey guys need some info, for the last week my supra is really struggling to start when cold. It turns over for 5 to 10 mins then struggles a bit before it finally fires up. It runs as normal once started and has no bother starting after its been run for a while. Engine management light is on and when I flashed it its bringing up code 12, camshaft crankshaft sensor? Ive changed the distributor cap rotor arm and o ring behind the cps housing but still have the same problem. Ive checked the pins on the distributor connector for the camshaft and crankshaft resistance and its showing the same as my mates supra, any ideas what else the problem could be? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted June 7, 2014 Share Posted June 7, 2014 I would measure the resistance of the water coolant ecu sensor, cold. Sometimes faulty coolant sensors fail to flag a fault code. I would then get a garage to scope the output of the disi sensor when struggling to start. Quote Link to comment Share on other sites More sharing options...
forbsey777 Posted June 27, 2014 Author Share Posted June 27, 2014 Still havnt got the car sorted, its now not starting at all. We worked out at the start of the week that there was intermittent voltage going to the distributor cap. We unplugged all connections around that area and found that the connector from the alternator was full of gunk. We cleaned it out and were able to get a full spark everytime we cranked. Still the car wont fire up. We then tried easy start in the carburator, car fired up but sounded like it was only running on a few cylinders before it died out after putting it in drive. Took it to my local toyota garage where they had it for 2 days , they told me they didnt have the diagnostics software to check for faults nor did they have any wiring diagrams for a supra, and as far as they could tell the injectors were not opening to supply fuel. They believe the fault is due to ecu or wiring fault but said it could take 12 - 15 hrs to figure out so ive had the car towed home again. Any ideas what my next step could be to solve the problem, its a bad sign when so called toyota mechanics dont sound confident working on a supra.... Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted June 28, 2014 Share Posted June 28, 2014 Surely there must be some good independent garages that are confident and competent enough to diagnose a basic set up like an N/A Supra injection and ignition system? There's nothing special about it that demands Toyota dealership input. Quote Link to comment Share on other sites More sharing options...
forbsey777 Posted June 28, 2014 Author Share Posted June 28, 2014 (edited) Thank god the car is alive again, swapped out the ecu with a 2nd hand one off ebay. Car runs perfect and engine managment light is off, fingers crossed thats the end of the problems. Edited June 28, 2014 by listy swearing. (see edit history) Quote Link to comment Share on other sites More sharing options...
straightsix Posted June 28, 2014 Share Posted June 28, 2014 its a bad sign when so called toyota mechanics dont sound confident working on a supra.... In fairness, the Supra is probably older than their mechanics (fitters) but I've noticed a distinct lack of ownership by dealers once a car gets to a certain age.... Pleased you got it sorted. If you open up your old ECU you might find some blown capacitors. If so it is easily repairable Quote Link to comment Share on other sites More sharing options...
Guest Budz86 Posted June 28, 2014 Share Posted June 28, 2014 For gods sake, if you get a problem with a Supra don't take it to Toyota! Stevie Wonder would be better off diagnosing it! Quote Link to comment Share on other sites More sharing options...
forbsey777 Posted June 28, 2014 Author Share Posted June 28, 2014 Lol budz trust me I know, only took me n minter 1 beer to figure the problem out tonight Quote Link to comment Share on other sites More sharing options...
Guest MINTER Posted June 29, 2014 Share Posted June 29, 2014 you looked well happy passing me today on the road man lol .glad its sorted! Quote Link to comment Share on other sites More sharing options...
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