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Old 09-17-2013, 04:15 PM   #1
Dave G
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Drives: Yaris 1.0 (53 plate)
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Yaris 1.0 not starting...please help!

I'm hoping one of you knowledgable people can help???

Firstly I'm not very mechanical, so please bare with me. My girlfriends 53 plate Yaris 1.0 recently cut out on the motorway, and had to be towed home. Car has been owned from new and has done 75k miles, serviced annually and up until now has run almost perfectly.

She said it was running fine right up until it cut out. By the time I got there and the recovery van arrived, it would start again. He thought it might be the CAT, but wasn't sure.

A couple of days later I was going to take it to a local garage (not one I've used before), after starting it then cut out and would not re-start! I towed it there using my own car, and they had a look over it at a total cost of £217. They fitted a new coil and had a guy come out with more sopyhticatyed diagnostic equipment, and after a lot of head scratching they said the ECU is the problem. This seemed a bit strange considering the all the electrics are working and it does turn over but just won't spark.

All in all we were not happy with the local garage so had it flat bedded (on the break down cover) to a garage we trust that has done all the services for the last 7 years. They are saying they also think its the ECU, which should cost around £1000. So before agreeing to go ahead with the repair or deciding to scrap it, as its prob not worth much more than a grand anyway, I thought I would ask if anyone had any ideas?

Many thanks for your time.
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Old 09-17-2013, 05:45 PM   #2
CTScott
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You can typically pick up a used ECM for under $100 US from a junkyard. With the Yaris control system, the ECM directly commands the coils to fire, so if the coils are good, and you still don't have spark, then the ECM is likely the culprit.
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