Revs Not Returning to Idle on Chimaera 500
Discussion
I own a Chimaera 500 here in Singapore which is now about a year old. The revs do not return to idle and remain stuck around 2000 rpm in between gear changes. When the vehicle is stationary it very slowly then returns to idle, or sometimes remains high at 1500 to 2000 rpm. This problem seems to arrive about every 1000 kilometers. So far they have focused on the stepper motor which was replaced and then cleaned each time it happens. The problem then returns soon afterwards. In between these issues it runs fine.
When the over -revving happens the car heats up fast and then if I cannot pull over it blows the contents of the radiator. As this is the only TVR in the country it is getting some serious hammering on reliability and I am quite sick of being laughed at.
The dealer here are experts at Aston Martin and RUF Porsche but do not know how to fix this issue. The TVR factory in Malaysia also seems unable to recommend a course of action.
Can you guys help me? I know it is very difficult from the other side of the world, but would appreciate some assistance. Many thanks.
When the over -revving happens the car heats up fast and then if I cannot pull over it blows the contents of the radiator. As this is the only TVR in the country it is getting some serious hammering on reliability and I am quite sick of being laughed at.
The dealer here are experts at Aston Martin and RUF Porsche but do not know how to fix this issue. The TVR factory in Malaysia also seems unable to recommend a course of action.
Can you guys help me? I know it is very difficult from the other side of the world, but would appreciate some assistance. Many thanks.
There is a factory in Malaysia also Monty.
The road speed sensor can also effect the idling speed, it may be causing a problem. The unfortunate thig is that all of these sensors are difficult to sort out without the correct diagnostic equipment. It may be worth a visit to the factory, at least they will have the right gear.
Alternatively, you could check the base idle as ACT suggested. If you do it all the way up, then undo 2.5 turns(I pretty sure this is right for catalytic convertor car). My stepper motor needs cleaning quite often, it may just be the different conditions in which you live in, i.e. high humidity that accelerates the carbon buildup on it.
>> Edited by zippy500 on Monday 27th January 08:14
The road speed sensor can also effect the idling speed, it may be causing a problem. The unfortunate thig is that all of these sensors are difficult to sort out without the correct diagnostic equipment. It may be worth a visit to the factory, at least they will have the right gear.
Alternatively, you could check the base idle as ACT suggested. If you do it all the way up, then undo 2.5 turns(I pretty sure this is right for catalytic convertor car). My stepper motor needs cleaning quite often, it may just be the different conditions in which you live in, i.e. high humidity that accelerates the carbon buildup on it.
>> Edited by zippy500 on Monday 27th January 08:14
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