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hoody2

Member Since 01 Apr 2019
Offline Last Active Jun 21 2019 03:55 PM
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Topics I've Started

My sons '01 MY WRX, EJ20

04 June 2019 - 03:34 PM

I'll try not to be giving you too much of a saga while I give you the detail.

The engine started missing and running really rough when cold. It had a new petrol filter and air filter. We got four used, tested coil packs from Sunspares at Yandina, fitted them with new plugs and it went OK for a few days then back to misbehaving. Back to Sunspares for a used MAS sensor. We cleaned this with the proper spray stuff and once again, good for a few days. I then walked out of the front door just as he started it and saw and smelt that it was running really rich; much more than needed, so I thought the ecu must think it's a lot colder than it is. We got a brand new after market temp' sensor from Bursons, put it in along with new coolant and it was brilliant for about 6 weeks.

Now it's started misfiring when it's warmed up :dash2:  I'm thinking it could be the coil pack under the brake booster where it gets really hot. Or could there be anything else going on?

Any help is much appreciated.