kevwill
Active Member
- Posts
- 930
- Location
- Sunny Hastings
A cautionary tale of tearing your hair out and not doing things in the correct order!
Rangey has been driving beautifully over the last few months. Fitted a new exhaust, sorted out my small leak on the manifold gasket (drivers side of course, so out with the steering shaft), new ngk plugs, lucas leads etc etc.
Then, about 3 weeks ago, as I stopped in traffic and put it into P (auto) the revs surged up to 2000 revs. It was fine in gear of course as the engine/gearbox holds the revs down. This went on for a couple of days, everything else ok, started fine, ran smoothly; but a steady 2000rpm in P or N.
So after researching on here and various other places, thought I'd start first with cleaning the plenium chamber. Cleaned out all the muck, replaced the breather hoses which were antique. Made sure the throttle cable was ok, which it was; cleaned the maff sensor, air filter good, and put it all back together.
Still 2000rpm.
Then I changed the stepper motor on the front of the throttle housing (4.6 gems engine), checked all the electric wiring, cleaned up the multiplugs with contact cleaner.
Still 2000rpm.
So then I thought it must be the throttle position sensor, just behind the stepper motor. Fitted new genuine Land Rover part.
Still 2000rpm.
Ok, surely then I've got a vacuum leak, as too much air is getting into the system. Ended up stripping the top v section of the engine; fitted a new inlet manifold (one of those new rubber coated ones from island 4x4), checking everything as I put it back together.
Still a rock steady 2000rpm.
Defeated, I booked it into my local Land Rover specialists (Terrain Vehicles, between Hastings and Bexhill, highly recommended) to be put on diagnostics.
They had it for 5 minutes. The values in the ECU just needed resetting.
Driving beautifully again.
So I guess the moral is; if your in trouble and don't know what to do, you dont have the number for the A Team, and you don't want to empty your wallet guessing, - get it on diagnostics!
Thank you and good night, - I mean good morning.
Rangey has been driving beautifully over the last few months. Fitted a new exhaust, sorted out my small leak on the manifold gasket (drivers side of course, so out with the steering shaft), new ngk plugs, lucas leads etc etc.
Then, about 3 weeks ago, as I stopped in traffic and put it into P (auto) the revs surged up to 2000 revs. It was fine in gear of course as the engine/gearbox holds the revs down. This went on for a couple of days, everything else ok, started fine, ran smoothly; but a steady 2000rpm in P or N.
So after researching on here and various other places, thought I'd start first with cleaning the plenium chamber. Cleaned out all the muck, replaced the breather hoses which were antique. Made sure the throttle cable was ok, which it was; cleaned the maff sensor, air filter good, and put it all back together.
Still 2000rpm.
Then I changed the stepper motor on the front of the throttle housing (4.6 gems engine), checked all the electric wiring, cleaned up the multiplugs with contact cleaner.
Still 2000rpm.
So then I thought it must be the throttle position sensor, just behind the stepper motor. Fitted new genuine Land Rover part.
Still 2000rpm.
Ok, surely then I've got a vacuum leak, as too much air is getting into the system. Ended up stripping the top v section of the engine; fitted a new inlet manifold (one of those new rubber coated ones from island 4x4), checking everything as I put it back together.
Still a rock steady 2000rpm.
Defeated, I booked it into my local Land Rover specialists (Terrain Vehicles, between Hastings and Bexhill, highly recommended) to be put on diagnostics.
They had it for 5 minutes. The values in the ECU just needed resetting.
Driving beautifully again.
So I guess the moral is; if your in trouble and don't know what to do, you dont have the number for the A Team, and you don't want to empty your wallet guessing, - get it on diagnostics!
Thank you and good night, - I mean good morning.
