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The mkiv Supra Owners Club

engine management light on - help please


_Shane_

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hi guys,

 

Went for a spin today in the supra, about 2 hours driving, no screwing the car or anything like that, most of journey was with cruise control on etc Then the engine management light came on and also the Traction control light came on at the exact same time, car kinda chugged for a second and then all was grand again.

 

On way home just there, both lights came on again and car was missing and lost all power, then power came back again. Car was only serviced a month ago.

 

Anyone have any idea on what could be the problem ?

 

I started the car again a few mins ago and i didnt even have

it backed out of my driveway and both lights were on and when i gave the car a little rev and the car was like missing again and no power :(

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talking to bondango there and he brought up something interesting. I only got the car serviced just over a month ago and while doing that my mate who serviced it was on about the coil pack clips on the first coil pack at the front of the engine saying they were very lose etc had a fiddle around with them there,took them out and put them back in and took car for a quick 5 min spin, no engine management lights or trac light came on :)

Car running as normal now, revving away, boost away as normal. Will still do another diagnosit check when it stops raining outside :) and will post up findings

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talking to bondango there and he brought up something interesting. I only got the car serviced just over a month ago and while doing that my mate who serviced it was on about the coil pack clips on the first coil pack at the front of the engine saying they were very lose etc had a fiddle around with them there,took them out and put them back in and took car for a quick 5 min spin, no engine management lights or trac light came on :)

Car running as normal now, revving away, boost away as normal. Will still do another diagnosit check when it stops raining outside :) and will post up findings

 

Sounds like you have sussed it then mate. Usually seems 9 times out of 10 it is something simple.

 

Bet thats a weight off your mind now :yahoo:

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it is indeed mate , just hope thats it solved now :) Ordering new clips for the coil packs tomor and will replace them some evening this week.

 

Will take the car for a longer spin in the min and see how it is. Will do another diagnostics test then afterwards again after i reset the ecu

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update

 

Went out and reset the ecu, only got 1 error code then - 27

 

Took car for a spin, all driving well, boost away, no dash lights coming on etc etc then when i change gear or anytime i have the clutch in the revs died and car would cut out.

 

Brought car home and ran diagnostics again - 27 , 42 came up this time round.

 

One of these is the o2 sensor, would ye think this needs replacing or what way should

i approach this situation. And finally just before i put car back into driveway i started it again and it pretty much fought to stay alive but after a minute or so the car started to idle as normal again.

 

Any input is much appreciated

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ECU will take a while to Relearn (usually a good 15mile run), as it will need to relearn its idle strategies etc etc

 

27 is sub oxygen sensor on the Uk, and shouldnt effect the car running as its used to monitor the cat. Is it actually connected as some people remove it when doing a decat on a UK??

42 could be faulty speed sensor, but more than likely the buffer circuit, do a search on how to fix.

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both cats are out of the car also (sorry forgot to mention that)

 

Will run out there and give it a start again and see how it is now :) brb lol

 

............. car running grand (didnt drive it) just started it up and perfect idle, rev away and she rests nicely again on idle, no cutting out :)

Edited by _Shane_ (see edit history)
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  • 2 months later...
update

 

Went out and reset the ecu, only got 1 error code then - 27

 

Took car for a spin, all driving well, boost away, no dash lights coming on etc etc then when i change gear or anytime i have the clutch in the revs died and car would cut out.

 

Brought car home and ran diagnostics again - 27 , 42 came up this time round.

 

One of these is the o2 sensor, would ye think this needs replacing or what way should

i approach this situation. And finally just before i put car back into driveway i started it again and it pretty much fought to stay alive but after a minute or so the car started to idle as normal again.

 

Any input is much appreciated

 

Could it be idle control "aparatus"?? Dont know whats its caled in English (Swedish).

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