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The mkiv Supra Owners Club

Serious problem or an easy fix


AMG

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A couple of days ago i posted telling all that i had a miss at town speeds (not checked at full boost in case it was a bigger problem). I have ordered some new coil pack connectors to see if that cures the problem. Not recieved them yet but today i started the Soop and tootled off to work. Two mins down the road, when i got to an island, it cut out and would not come to life again. Pulled over but it would not start. It was turning over but would not fire up. After about ten min of wiggling the connectors and trying to start it. it struggled into life and i managed to limp home.

 

The question is, would bad coil pack connections cause all this or is it something else or something more serious? :(

 

I have hardly lifted the bonnet in months so i very much doubt the miss was caused by something i have knocked or moved myself. I poressume that something has failed and is now causing the cut out problem. :search:

 

When i get back home tonight i will check the error code and have a good check of the connectors.

 

P.S. This problem has really come at the wrong time as my mrs keeps on at me to sell the Soop and get a more 'grown up' and reliable car!!! The bloody cheek!! Makes me even more determind to fix it quickly to prove her wrong lol

Edited by AMG (see edit history)
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Tried a diagnostic check bridging the correct terminals but am getting now engine light falshing on the dash at all. Not even to tell me everything is ok :blink:

Checked the immobiliser is off and tried it in all ignitio key possitions, even with the engine running. Really stuck now :search:

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Mate

I had the same symptoms and also running very rich, couldnt get over 2k rpm. I checked the coil pack connectors, but since only two looked doggy I only changed those ones but it didnt make any difference. Since the next stop was the local garage I changed the rest of the connectors although they all seemed to be OK and the problem was cured once the motor ran for a bit and cleared itself out. So since you have ordered the connectors already and it is a 20min job lets hope that is all it is!

I was amazed how sensitive the motor was to these things!

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  • 3 weeks later...

Right then, i changed the coil pack connectors with no trouble and also reset the ECU.

Left running on tick over for about half hour and then took it to work this morning. Its only about 8 mile but all seemed good :)

 

On the way home tonight it was running really smooth for about 20 mins and i think i suddenly got a tiny stutter. Cant be sure as it may be me being paranoid :rolleyes:

 

We will see what it is like tomorrow.

 

The only thing a did notice was a puff of blue/white smoke when i got home and started to reverse. Is this a sign of something more serious like valve stem seals? I will keep checking for this but is has dont this before but only every now and then.

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