Tricky-Ricky Posted February 26, 2006 Share Posted February 26, 2006 Yes i have searched, but have not turned up anything resembling this! cold start it has a couple of pulses and settles at 800RPM when it should be 1500 ish!? hot idle 1100-1200 RPM? in fact almost the opposite of what it should be? any ideas? has anyone got manual pages referring to idle set up- adjustment procedure? or is it likely to be ECU engine temp sensor or a lambda problem? although i know what I'm doing, I'm new to the Supras engine control and feedback quirks, Also has anyone any tips for getting rid of the gearstick/reverse lock rattle? Quote Link to comment Share on other sites More sharing options...
eyefi Posted February 26, 2006 Share Posted February 26, 2006 what ecu? Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted February 26, 2006 Author Share Posted February 26, 2006 Std 94 J spec 6 speed? Quote Link to comment Share on other sites More sharing options...
eyefi Posted February 27, 2006 Share Posted February 27, 2006 ah right, i thought i could remember you saying you had powerfc or/and emanage. check the idle speed control valve (resisance checks and motion), coolant temp sensor and vac leaks, for starters has it just started doing it? Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted February 27, 2006 Author Share Posted February 27, 2006 Can you give me the values for idle speed control valve , and temp sensor, or a link to them? where is the temp sensor located? i have checked for leaks, disconnected all relative plugs with no change? reset the ECU no change? any relative info would be a great help:) Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted February 27, 2006 Author Share Posted February 27, 2006 Can anyone help? Quote Link to comment Share on other sites More sharing options...
Guest dee_rz Posted February 27, 2006 Share Posted February 27, 2006 you should be ideling at 800rpm ish surly (on stock cams) or do you have non stock cams, 1500rpm idle would be more like a car with 264 cams around may even 272's am i wrong?? but can be a number of things, do you have a lightweight flywheel, lightweight flywheels can cause a lumpy idle and low speed surge Quote Link to comment Share on other sites More sharing options...
nismo_lp Posted February 27, 2006 Share Posted February 27, 2006 95 manual tt here ... idols at about 800 too ... no probs Quote Link to comment Share on other sites More sharing options...
eyefi Posted February 27, 2006 Share Posted February 27, 2006 you should be ideling at 800rpm ish surly (on stock cams) or do you have non stock cams, 1500rpm idle would be more like a car with 264 cams around may even 272's am i wrong?? but can be a number of things, do you have a lightweight flywheel, lightweight flywheels can cause a lumpy idle and low speed surge i have a rock steady idle at 680 (no electrical load or ac) with medium cams and light flywheel. a 1500 rpm idle is not pleasant, especially with loud exhausts Quote Link to comment Share on other sites More sharing options...
eyefi Posted February 27, 2006 Share Posted February 27, 2006 Can anyone help? the data is in the workshop manual. i dont know of a web resource that has that particular data and i dont have access to a scanner at the moment. i'll see what i can do tomorrow if no-one else can in the meantime Quote Link to comment Share on other sites More sharing options...
Steve Posted February 27, 2006 Share Posted February 27, 2006 Mine idles at 700rpm approx with 264 CAMS Quote Link to comment Share on other sites More sharing options...
eyefi Posted February 27, 2006 Share Posted February 27, 2006 where is the temp sensor located? the alloy elbow (near the block) that runs to the rad return. Quote Link to comment Share on other sites More sharing options...
DamanC Posted February 28, 2006 Share Posted February 28, 2006 mine sits at 500/600rpm, usally ok but but causes rattles now and again...........should i be concerned? has done it since i got it btw Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted February 28, 2006 Author Share Posted February 28, 2006 Has anyone had to adjust there idle? ans how is it done? Quote Link to comment Share on other sites More sharing options...
Jurgen-Jm-Imports Posted February 28, 2006 Share Posted February 28, 2006 i have done mine before manually with the screw i showed you, try this see and see what results u get Quote Link to comment Share on other sites More sharing options...
eyefi Posted February 28, 2006 Share Posted February 28, 2006 i'm not sure which screws you are refering to but i wouldn't mess with the throttle buterfly adjusters to alter the idle, you are just masking the problem. Quote Link to comment Share on other sites More sharing options...
Jurgen-Jm-Imports Posted February 28, 2006 Share Posted February 28, 2006 i'm not sure which screws you are refering to but i wouldn't mess with the throttle buterfly adjusters to alter the idle, you are just masking the problem. you can adjust it very minor, i wouldnt recommend to adjust over 300rpm Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted February 28, 2006 Author Share Posted February 28, 2006 Well i have taken it down to 800RPM by adjusting the stop screw, will see what its like tomorrow when its stone cold! it actually looked like it had been adjusted before? but as it was previously to slow when cold, and afaics its controlled by the ECU, i will have to wait until i get a manual to get to the bottom of it! Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted March 1, 2006 Author Share Posted March 1, 2006 Well i have now found that the idle is the same as i set it when hot! now that i have started it from stone cold! i would have thought it might be down to a faulty ECU water temp sensor (anyone have a pic of its location) so i'll test it later, but on other other cars if the sensor is faulty, it causes it to run rich when hot? but am i right in thinking that the Supra runs an air temp sensor? so this might compensate when hot? anyone have any other ideas? Quote Link to comment Share on other sites More sharing options...
colsoop Posted March 1, 2006 Share Posted March 1, 2006 Well i have now found that the idle is the same as i set it when hot! now that i have started it from stone cold! i would have thought it might be down to a faulty ECU water temp sensor (anyone have a pic of its location) so i'll test it later, but on other other cars if the sensor is faulty, it causes it to run rich when hot? but am i right in thinking that the Supra runs an air temp sensor? so this might compensate when hot? anyone have any other ideas? temp sensor location HERE Intake air controller picture HERE There is also a manual in the downloads section that describes how to test the IAC. The search button is very much your friend Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted March 1, 2006 Author Share Posted March 1, 2006 Thanks for that:) is there any set up or adjustment for the Intake air controller ?? Quote Link to comment Share on other sites More sharing options...
colsoop Posted March 1, 2006 Share Posted March 1, 2006 Have a look in club extras - downloads, i am sure there is a manual in PDF that has the procedure for the IAC Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted March 2, 2006 Author Share Posted March 2, 2006 Bugger! it looks like the IAC stepper if fooked! took it off earlier and cleaned and tested it, found the relevant pages from the manual, and tested it by supplying 12V and grounding the pins in sequence, and found that there is no real movement!! unless its supposed to move in thousandths of an inch! which i doubt, so has anyone got a spare they can sell/loan me? Quote Link to comment Share on other sites More sharing options...
Jurgen-Jm-Imports Posted March 2, 2006 Share Posted March 2, 2006 i have a damaged supra coming in might be able to get one off that for you if u can wait Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted March 2, 2006 Author Share Posted March 2, 2006 i have a damaged supra coming in might be able to get one off that for you if u can wait Thanks mate! how long do you think? Quote Link to comment Share on other sites More sharing options...
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