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Thanks, Rob for posting this up, I do have a member page already, just not updated it recently, not easy to find in the wiki is it. Sorry.
http://www.vems.hu/wiki/index.php?page=MembersPage%2FSprocket ----- |
| Rover originaly used a switch on the throttle pedal to determine idle condition. The problem was the switch would fail. I recently fixed one of these after A very well known and renowned Mini specialist couldnt fix the problem, the car would backfire, hesitate and run badly, so much so it melted the cat. The cat was replaced for it to melt again within two days!! a complete injection manifold was fitted which included all sensors, the problem still existed. I looked at it and found the problem within 10 minuits, now im not being big headed, but it really does show the skill level of these so called experts. when you moved the throttle the stepper moved to zero and the advance retarded to the point of inlet backfire, incomplete combustion in the exhaust melting the two cats. The owner had spent over £500 at the garage for what, in the end was only a £20 switch. I ripped out the old ECU and installed and rewired for a later version that did away with the switch, and it cost him no more than a pint afterwards. Point im getting at, i can see this as very similar to the problem im having, though i havent managed to get it to go pop yet, lol. Well i can when restarting it, ooh, now i wonder. |
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Rover originaly used a switch on the throttle pedal to determine idle condition. The problem was the switch would fail. I recently fixed one of these after A very well known and renowned Mini specialist couldnt fix the problem, the car would backfire, hesitate and run badly, so much so it melted the cat. The cat was replaced for it to melt again within two days!! a complete injection manifold was fitted which included all sensors, the problem still existed. I looked at it and found the problem within 10 minuits, now im not being big headed, but it really does show the skill level of these so called experts. when you moved the throttle the stepper moved to zero and the advance retarded to the point of inlet backfire, incomplete combustion in the exhaust melting the two cats. The owner had spent over £500 at the garage for what, in the end was only a £20 switch. I ripped out the old ECU and installed and rewired for a later version that did away with the switch, and it cost him no more than a pint afterwards. Point im getting at, i can see this as very similar to the problem im having, though i havent managed to get it to go pop yet, lol. Well i can when restarting it, ooh, now i wonder.
Also to aleviate any confusion as to why TPS changes with engine ilde load and cold start, the IAC stepper is a throttle kicker and not a bypass valve. |