pauld36 Posted October 23, 2010 Share Posted October 23, 2010 im now so desparate for an answer i will genuinely give £50 to first person to answer this, car runs standard ecu with hks f con pro gold piggy back,at present a safe general supra map installed. when new engine fitted car refuses to start,comp says crank sensor ,[not crank sensor,been checked]. if you disconnect hks and just standard ecu connected car starts instantly. change wiring loom and hks still car wont start.[thanks matt at afr] put my hks and loom on 3 other cars they all start perfectly. please ,please help as to where to go next. Quote Link to comment Share on other sites More sharing options...
Purity14 Posted October 23, 2010 Share Posted October 23, 2010 ... Quote Link to comment Share on other sites More sharing options...
Scott Posted October 23, 2010 Share Posted October 23, 2010 Standard immobiliser? Quote Link to comment Share on other sites More sharing options...
pauld36 Posted October 23, 2010 Author Share Posted October 23, 2010 scott im thinking something to do with immoboliser but would it start on the standard ecu then not when piggybacked with hks; im only thinking this way cos its the only other thing i not had ripped apart. Quote Link to comment Share on other sites More sharing options...
Scott Posted October 23, 2010 Share Posted October 23, 2010 scott im thinking something to do with immoboliser but would it start on the standard ecu then not when piggybacked with hks; im only thinking this way cos its the only other thing i not had ripped apart. Thats the main reason I suggested it. Your problem is one of those really tough ones. People have had some real issues with the stock imobilisers in the past, either not being compatible with ECUs or causing havoc with new alarm systems. You have ruled out everything else I can think of with my limited knowledge. Quote Link to comment Share on other sites More sharing options...
pauld36 Posted October 23, 2010 Author Share Posted October 23, 2010 if it helps i got a toad a1606 that when immobilises car it doesnt even turn over . Quote Link to comment Share on other sites More sharing options...
pauld36 Posted October 23, 2010 Author Share Posted October 23, 2010 is there any way i can have this standard immobiliser removed or disconnected Quote Link to comment Share on other sites More sharing options...
pauld36 Posted October 23, 2010 Author Share Posted October 23, 2010 also its a new engine Quote Link to comment Share on other sites More sharing options...
Scott Posted October 23, 2010 Share Posted October 23, 2010 if it helps i got a toad a1606 that when immobilises car it doesnt even turn over . I think the stock immobiliser affected the spark? Check you are getting a spark first. Take off the spark plug cover, take off one of the coil packs and remove one of the spark plugs (or use a spare one) and see if it sparks on the block of the body when you are trying to fire it. Next check would be the fuel pump. If you have fuel & spark then the last thing to check would be timing. You can normally tell if timing is the issue with the lumpy way it tries to fire. Quote Link to comment Share on other sites More sharing options...
pauld36 Posted October 23, 2010 Author Share Posted October 23, 2010 no not getting spark,with hks connected but its running well on standard ecu Quote Link to comment Share on other sites More sharing options...
Scott Posted October 23, 2010 Share Posted October 23, 2010 I would get the immobiliser removed. Quote Link to comment Share on other sites More sharing options...
adnanshah247 Posted October 23, 2010 Share Posted October 23, 2010 scott i think has earned the £50! im pretty sure it would be the immobiliser as well. Quote Link to comment Share on other sites More sharing options...
pauld36 Posted October 23, 2010 Author Share Posted October 23, 2010 i will get it checked and i will gladly honour my statement cos ive been going mad its been months of checking everything else. Quote Link to comment Share on other sites More sharing options...
absz Posted October 23, 2010 Share Posted October 23, 2010 First thing i'll do is get the garage to check the crank signal using a scope to determine if you are losing the signal with hks ecu or getting a bad signal due to interference. and go from there:) simples Quote Link to comment Share on other sites More sharing options...
pauld36 Posted October 23, 2010 Author Share Posted October 23, 2010 surely if the crank signal was being lost it wouldnt start on standard ecu,or would it Quote Link to comment Share on other sites More sharing options...
supraturbochris Posted October 23, 2010 Share Posted October 23, 2010 faulty data on the hks piggyback i think. If you have checked everything and even with the hks disconnected the car starts. 95% sure its the hks unit causing the engine not to start. Run the supra with out it mate, sell it and get a nice new piggyback from dude for £550 mapped Quote Link to comment Share on other sites More sharing options...
pauld36 Posted October 23, 2010 Author Share Posted October 23, 2010 faulty data on the hks piggyback i think. If you have checked everything and even with the hks disconnected the car starts. 95% sure its the hks unit causing the engine not to start. Run the supra with out it mate, sell it and get a nice new piggyback from dude for £550 mapped yes but my piggy back and wiring harness has started 3 other supras running same since Quote Link to comment Share on other sites More sharing options...
barneybrendan Posted October 23, 2010 Share Posted October 23, 2010 have you checked the wirring from the sensor . Quote Link to comment Share on other sites More sharing options...
bondango Posted October 23, 2010 Share Posted October 23, 2010 physically check the female (engine side) connector pins (e9-27 + e9-7) on your main engine loom ECU Plug to ensure that neither of them have pushed back slightly. The PNP harness may not be contacting properly with these, although your standard ECU does (longer pins), hence the PNP harness and ECU working on other cars and not yours. Quote Link to comment Share on other sites More sharing options...
absz Posted October 23, 2010 Share Posted October 23, 2010 surely if the crank signal was being lost it wouldnt start on standard ecu,or would it I take it the signal is being lost when the piggyback ecu is connected, if thats the case you need to determine IF its a signal loss or signal breakdown,The sample rate of a multi-meter or code reader is too slow hence the use of a scope. my guess will be a interference in signal due to some incorrect wiring/wire fitment as a guess. Quote Link to comment Share on other sites More sharing options...
pauld36 Posted October 24, 2010 Author Share Posted October 24, 2010 physically check the female (engine side) connector pins (e9-27 + e9-7) on your main engine loom ECU Plug to ensure that neither of them have pushed back slightly. The PNP harness may not be contacting properly with these, although your standard ECU does (longer pins), hence the PNP harness and ECU working on other cars and not yours. checking this theory ,i hope its this simple ..il be back Quote Link to comment Share on other sites More sharing options...
pauld36 Posted October 24, 2010 Author Share Posted October 24, 2010 no bondango they all the same Quote Link to comment Share on other sites More sharing options...
pauld36 Posted October 24, 2010 Author Share Posted October 24, 2010 does anyone know where the original immobiliser is and is it an easy job to remove ta Quote Link to comment Share on other sites More sharing options...
Ryan.G Posted October 24, 2010 Share Posted October 24, 2010 Paul bring it over to me one day next week mate and im confident i will fix it Ryan - 07812786303 Quote Link to comment Share on other sites More sharing options...
pauld36 Posted October 24, 2010 Author Share Posted October 24, 2010 Paul bring it over to me one day next week mate and im confident i will fix it Ryan - 07812786303 il call you ryan an give full story if you confident il gladly bring it over Quote Link to comment Share on other sites More sharing options...
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