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Omega General Help / Won’t take much throttle & misfires – ECU?
« on: 14 July 2021, 17:10:58 »
I have a problem on my 2002 2.6 CDX Estate – if I use more than half throttle it starts to lurch as it cuts out, comes back in, cuts out again, until I lift off the throttle and it runs OK again. If I don’t lift off within a few seconds it suffers a sudden loss of power as it goes into limp mode. If that happens I’ll pull in and switch off for a minute or two and it restarts again.
Once you’ve gradually got it up to speed it’ll maintain motorway speeds and the mpg hasn’t deteriorated. The fault is long-standing and not intermittent.
I had it into my local garage last year but they couldn’t get to the bottom of it and said it was probably the ECU.
Additionally it’s now started missing at tickover up to 2,500rpm and the engine management light is permanently on.
I’ve read on here a number of times over the years that it’s hardly ever the ECU that’s the problem, but that garages often say it’s the ECU because they can’t figure out what else it could be. So, could it be the ECU? If not, then what else could it be?
Once you’ve gradually got it up to speed it’ll maintain motorway speeds and the mpg hasn’t deteriorated. The fault is long-standing and not intermittent.
I had it into my local garage last year but they couldn’t get to the bottom of it and said it was probably the ECU.
Additionally it’s now started missing at tickover up to 2,500rpm and the engine management light is permanently on.
I’ve read on here a number of times over the years that it’s hardly ever the ECU that’s the problem, but that garages often say it’s the ECU because they can’t figure out what else it could be. So, could it be the ECU? If not, then what else could it be?