Kagarooing at 70mph ??
Discussion
The wife drives an ST200. (Jan 2000) We've had it since new, but whilst sharing the driving to Southern Spain last month, I soon discovered that if you planted you foot on the accelerator at 70mph whilst in 5th gear it would kangaroo through until it was over 4k revs.
At 70mph the car is using about 3.2k revs so you have to wait until 4k before it smooths out again and it accelerates slowly (At least it feels slow to me ) at this speed. I tried it in 3rd and 4th at lower speeds and lower revs and the same thing was happening. The only way to stop it happening was to drop a gear and raise the revs quickly that way or to just depress the accelerator millimetre by millimetre.
The car has done 120k miles and was recently serviced by a Main dealer (in fact it does have a full service history), does anyone have any ideas of what to suggest to the dealer ?
Other than this the car is perfect except that some scrote last week keyed the bonnet whilst it was parked in the Oracle at Reading.
Any suggestions would be appreciated.
TIA
At 70mph the car is using about 3.2k revs so you have to wait until 4k before it smooths out again and it accelerates slowly (At least it feels slow to me ) at this speed. I tried it in 3rd and 4th at lower speeds and lower revs and the same thing was happening. The only way to stop it happening was to drop a gear and raise the revs quickly that way or to just depress the accelerator millimetre by millimetre.
The car has done 120k miles and was recently serviced by a Main dealer (in fact it does have a full service history), does anyone have any ideas of what to suggest to the dealer ?
Other than this the car is perfect except that some scrote last week keyed the bonnet whilst it was parked in the Oracle at Reading.
Any suggestions would be appreciated.
TIA
Don't suggest anything to the dealer, you'll only serve to cloud their judement and potentially create a false diagnosis.
Instead, explain the concern clearly and with as much detail as possible, better still ask the dealers test driver to go out with you on road test. you demonstrate the concern and then swap with the tester and make sure HE can recreate it. That way he'll know if it's fixed.
I'd suggest reading the PCM's fault memory first, there might be a DTC to show an out of range sensor.
If no fault codes exist due to the narrow RPM range in which the fault occurs, they can datalog the car with triggers set just above and below the affected rpm.
without seeing or feeling it, i'd have a look at the MAP sensor first, and then maybe have a look to make sure the inlet manifold runners are opening up.
Instead, explain the concern clearly and with as much detail as possible, better still ask the dealers test driver to go out with you on road test. you demonstrate the concern and then swap with the tester and make sure HE can recreate it. That way he'll know if it's fixed.
I'd suggest reading the PCM's fault memory first, there might be a DTC to show an out of range sensor.
If no fault codes exist due to the narrow RPM range in which the fault occurs, they can datalog the car with triggers set just above and below the affected rpm.
without seeing or feeling it, i'd have a look at the MAP sensor first, and then maybe have a look to make sure the inlet manifold runners are opening up.
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