TT Paul Posted April 6, 2014 Share Posted April 6, 2014 (edited) with dragon ball around the corner not happy leaving this in case it goes altogether.. spec stock jspec full bpu fcd fitted but done it before i fitted it to fault. run car up to temp, turn off wait. restart splutters try again fires up abit lumpy below 1000rpm blip throttle slowly recovers. no difference if i give abit of throttle always starts on 2nd go:blink: parts replaced. TPS, plugs, fuel pump, pipes from stock fpr where to go next ?? heat soke injectors ?? http://youtu.be/NHG7CJGmYxc Edited April 6, 2014 by TT Paul (see edit history) Quote Link to comment Share on other sites More sharing options...
Guest Budz86 Posted April 6, 2014 Share Posted April 6, 2014 Any noticeable problems while driving it Paul? No misfires or lumpy idle in traffic or anything? Does seem a strange one! IACV maybe? My first thought was starter motor getting a little worn but doesn't look like it from the vid. Might be worth the £20 for a refurb kit though.... Quote Link to comment Share on other sites More sharing options...
TT Paul Posted April 6, 2014 Author Share Posted April 6, 2014 (edited) all good apart from this. turning over strong so im think,n elec fault? sensor weak signal not enough fuel to fire. and 1st go puts fuel into chamber 2nd ignites. or timing out had head work. oil,water are good not burning any Edited April 6, 2014 by TT Paul (see edit history) Quote Link to comment Share on other sites More sharing options...
mellonman Posted April 7, 2014 Share Posted April 7, 2014 looks like the o2 sensor is not heating up to keep you lean like that Quote Link to comment Share on other sites More sharing options...
TT Paul Posted April 7, 2014 Author Share Posted April 7, 2014 looks like the o2 sensor is not heating up to keep you lean like that thats the aem one car runs off stock o2 what you thinking ? Quote Link to comment Share on other sites More sharing options...
mellonman Posted April 7, 2014 Share Posted April 7, 2014 exactly that the stock o2 sensor is not heating ( probably because the engine is hot ) but still swinging you lean , thats why you have to rev to get it to go back to normal ,as this heats the sensor to the correct temp, it maybe on its way out well the heating part anyway, it could even be the ecu temp sensor if thats what contols the pre heating of the o2 sensor Quote Link to comment Share on other sites More sharing options...
TT Paul Posted April 7, 2014 Author Share Posted April 7, 2014 asked a mate who's a mechanic thought maybe water temp sensor for ecu, so your both in the same area, gonna try o2 1st as i have a used but working one to hand which i know is good as from my old car wi Quote Link to comment Share on other sites More sharing options...
Abz Posted April 7, 2014 Share Posted April 7, 2014 Any immobiliser fitted Paul? Quote Link to comment Share on other sites More sharing options...
TT Paul Posted April 7, 2014 Author Share Posted April 7, 2014 ye but dout its that as fires up fine, and all lights on Quote Link to comment Share on other sites More sharing options...
TT Paul Posted April 9, 2014 Author Share Posted April 9, 2014 o2 sensor changed no different ecu temp switch next Quote Link to comment Share on other sites More sharing options...
David P Posted April 9, 2014 Share Posted April 9, 2014 If that doesn't work, I'd be suspicious of the crank then cam sensors. Quote Link to comment Share on other sites More sharing options...
wile e coyote Posted April 9, 2014 Share Posted April 9, 2014 Was about to say crank sensor Quote Link to comment Share on other sites More sharing options...
David P Posted April 9, 2014 Share Posted April 9, 2014 Have you checked the fuel pressure? Quote Link to comment Share on other sites More sharing options...
RobUK Posted April 9, 2014 Share Posted April 9, 2014 Checked the fuel line? Quote Link to comment Share on other sites More sharing options...
Pig Posted April 9, 2014 Share Posted April 9, 2014 What happens if you turn the ignition and wait for a few seconds then start? I can't remember the setup on twins but on the single I need to wait a few seconds for the fuel pressure to build. Care to try some different scenarios and give feedback? Cold start, turn off start again when still cold. run up to temp, off then on again quickly like in the vid Up to temp and wait a couple of mins etc etc Quote Link to comment Share on other sites More sharing options...
TT Paul Posted April 10, 2014 Author Share Posted April 10, 2014 (edited) done crank sensor forgot to mention. gonna do ecu temp switch and also compare ohms reading from the 2.. compression test also good readings all around 160psi fault expanded. cold start always fine, hot start if you wait 5mins - 30mins or try straight away its the same. still seems lean/lumpy until i apply throttle and rev above 1000rpm then picks up, only when right down on temp gauge springs to life 1st turn fuel info. fuel line looks like it had a single on it, larger line fitted from tank would that cause it?? more pressure needed due to larger line?? but would be hot and cold surely Edited April 10, 2014 by TT Paul (see edit history) Quote Link to comment Share on other sites More sharing options...
Pig Posted April 13, 2014 Share Posted April 13, 2014 Have you changed the temp sensor yet? The ECU will change the fueling dependant on the temp but more fuel for a cold start so think this is probably not the cause. Worth a shot if not expensive, alternatively you could test the sensor. What happens if you keep on cranking without touching the throttle? Have you checked Ian C's thread to see if symptoms are similar? No harm in checking the timing. Assume it has standard cam gears? Quote Link to comment Share on other sites More sharing options...
TT Paul Posted April 14, 2014 Author Share Posted April 14, 2014 (edited) not seen ian thread.. and done the temp sensor seems tobe better but not fixed i will see how it goes when i get bonnet back and can use it more 2.2 ohms on cold engine, but not checked when hot, will stick it in some hot water to get the ohms readings when hot. i will return......... Edited April 14, 2014 by TT Paul (see edit history) Quote Link to comment Share on other sites More sharing options...
Pig Posted April 14, 2014 Share Posted April 14, 2014 Have a read of this: http://www.mkivsupra.net/vbb/showthread.php?293457-Warm-start-problem-ongoing-investigation Any help? Quote Link to comment Share on other sites More sharing options...
TT Paul Posted April 15, 2014 Author Share Posted April 15, 2014 heat soke maybe worth getting some injectors.. Quote Link to comment Share on other sites More sharing options...
marc_p Posted April 15, 2014 Share Posted April 15, 2014 Sounds like a fuel vaporisation issue to me, it's behaving like it's got OHC(of which the supra doesn't have of course). I'm unsure where the fuel could vapour from/too though :/ Quote Link to comment Share on other sites More sharing options...
TT Paul Posted April 16, 2014 Author Share Posted April 16, 2014 its ongoing get bonnet back, then be able to use it see if its gone or still the same.. Quote Link to comment Share on other sites More sharing options...
TT Paul Posted April 17, 2014 Author Share Posted April 17, 2014 update still has fault next cam sensors from my old working car then injectors Quote Link to comment Share on other sites More sharing options...
TT Paul Posted April 18, 2014 Author Share Posted April 18, 2014 cam sensors done today no change. injectors next Quote Link to comment Share on other sites More sharing options...
Abz Posted April 19, 2014 Share Posted April 19, 2014 Is it possible to see if you get an error code? Using that pin method? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.