leekscurlock
Crunching Gears
Hey everyone.
So I've had my leggy for a few years now and have loved every moment of it!
It's run perfectly without a fault for most of that time. That was until about a year ago.
It all started with the odd cut out while driving long distance, it would run fine and then just loose throttle response and drop revs right down to all but 0 but not stall, after a couple of seconds the throttle response would come back with quite a jolt and then be fine for half an hour or so and then do it again.
The car then spent a while in the drive way and was only driven occasionally and still had the same problem but slightly more frequently. In the last couple of months things have steadily got worse to the point of not being able to drive the car at all. The symptoms are the same as before but much worse and with a few strange twists.
So the car now runs fine for 5 or 10 minutes and then starts to cut out in the same manner as before but instead of doing it every half hour or so it does it constantly once the car heats up (on hot days it cuts out straight away). The cutting out/loss of throttle response now also occurs when I indicate and reverse! The final thing is the car now hunts for idle when stationary. It idles fine when cold but once it's been driven for a while it hunts and occasionally stalls.
Once the loss of throttle response started to get really bad I started systematically replacing or repair parts trying to isolate what could cause such a problem all to no avail. Now I'm starting to run out of ideas and it's starting to wear thin.
At this point I have replace the plugs, fuel pump, fuel filter, MAF, serviced the coils and cleaned and re oiled the K&N air filter all of which have had very little impact on the performance of the car.
While replacing the MAF I happened to disconnect the original MAF while it was hunting for idle and it settled at just under 1000 RPM and ran fine without the MAF if a little rougher and a lot richer than with the MAF connected but did not cut out at all. With the new MAF the idle dropped right down and now runs really smoothly, I was sure that was the end of it and the problem had been found. I was wrong! After a quick drive the car started to cut out and hunt as before, so back to square one.
My final thought and only thing I have yet to change is the Crank Angle Sensor. Any thoughts on whether this sounds like a faulty CAS or anything else that could cause such a problem would be much appreciated.
Thanks a lot everyone.
Lee
So I've had my leggy for a few years now and have loved every moment of it!
It's run perfectly without a fault for most of that time. That was until about a year ago.
It all started with the odd cut out while driving long distance, it would run fine and then just loose throttle response and drop revs right down to all but 0 but not stall, after a couple of seconds the throttle response would come back with quite a jolt and then be fine for half an hour or so and then do it again.
The car then spent a while in the drive way and was only driven occasionally and still had the same problem but slightly more frequently. In the last couple of months things have steadily got worse to the point of not being able to drive the car at all. The symptoms are the same as before but much worse and with a few strange twists.
So the car now runs fine for 5 or 10 minutes and then starts to cut out in the same manner as before but instead of doing it every half hour or so it does it constantly once the car heats up (on hot days it cuts out straight away). The cutting out/loss of throttle response now also occurs when I indicate and reverse! The final thing is the car now hunts for idle when stationary. It idles fine when cold but once it's been driven for a while it hunts and occasionally stalls.
Once the loss of throttle response started to get really bad I started systematically replacing or repair parts trying to isolate what could cause such a problem all to no avail. Now I'm starting to run out of ideas and it's starting to wear thin.
At this point I have replace the plugs, fuel pump, fuel filter, MAF, serviced the coils and cleaned and re oiled the K&N air filter all of which have had very little impact on the performance of the car.
While replacing the MAF I happened to disconnect the original MAF while it was hunting for idle and it settled at just under 1000 RPM and ran fine without the MAF if a little rougher and a lot richer than with the MAF connected but did not cut out at all. With the new MAF the idle dropped right down and now runs really smoothly, I was sure that was the end of it and the problem had been found. I was wrong! After a quick drive the car started to cut out and hunt as before, so back to square one.
My final thought and only thing I have yet to change is the Crank Angle Sensor. Any thoughts on whether this sounds like a faulty CAS or anything else that could cause such a problem would be much appreciated.
Thanks a lot everyone.
Lee