Discussion
Recently got my first Tuscan, sweet !! Still grining like an idiot. However she does not like to be driven at a constant speed around 30,40 mph. Now I know my driving may not be fantastic but trust me my foot is steady, is this a characteristic of the car or should I be getting worried ??. It's a 2001 by the way. 10K miles on it, not had a rebuild, hopefully never will.
If you're trying to drive around at 30-40 mph in forth/fifth gear then it will be very lumpy and even more lumpy when the engine is cold. I find that at those sorts of speeds, 2nd/3rd is better.
I would imagine that 30-40 mph in forth is less than 2000 rpm, which in my experience tends to be very lumpy - so I don't think that you need worry.
These engines are not produced to idle around at low revs..........IMO
I would imagine that 30-40 mph in forth is less than 2000 rpm, which in my experience tends to be very lumpy - so I don't think that you need worry.
These engines are not produced to idle around at low revs..........IMO
peteh said:
If you're trying to drive around at 30-40 mph in forth/fifth gear then it will be very lumpy and even more lumpy when the engine is cold. I find that at those sorts of speeds, 2nd/3rd is better.
I would imagine that 30-40 mph in forth is less than 2000 rpm, which in my experience tends to be very lumpy - so I don't think that you need worry.
These engines are not produced to idle around at low revs..........IMO
nor will they last more than 15K miles on average. Get some money saved up for a rebuild and dont kid yourself that it wont happen to you. Fingers crossed though you are one of the lucky ones.
At low speeds the engine is lumpy and the ride is bumpy. The faster the better. Around town driving they can be a bit of a dog or even a bitch.
Throttle bodies are prone to wear and going out of tune. May be worth getting this checked out for the sake of an hour's labour. Dethrottle chip may also help in some cases. Do a search on here, there is quite a bit of info/experience about this - but ultimately they are racing style engines so can be lumpy at low revs.
Throttle bodies are prone to wear and going out of tune. May be worth getting this checked out for the sake of an hour's labour. Dethrottle chip may also help in some cases. Do a search on here, there is quite a bit of info/experience about this - but ultimately they are racing style engines so can be lumpy at low revs.
On my Tam, I have just had the throttle pots replaced (about £60 for the 2 from TVR Power), and the engine is as smooth as it's ever been, can now drive it in 4th at 30mph without any juddering or hiccups
It's worth changing the pots before spending more on the bodies, like I almost did!
It's worth changing the pots before spending more on the bodies, like I almost did!
For the record, how did HHC deal with the worn throttle bodies - did they remove them and have them rebushed - or just slap a whole new set on? May I ask what the charge was as there are many on here that would like to know.
Also, I know that throttle bodies weare, but what wears on the throttle pots? I know they must move in some way to generate the positional readings and send voltage data to the ECU, but I know nothing more on this and would like to learn and help others if it comes up as a q again in the future.
Many thanks and pleased to hear that all is smooth again.
Also, I know that throttle bodies weare, but what wears on the throttle pots? I know they must move in some way to generate the positional readings and send voltage data to the ECU, but I know nothing more on this and would like to learn and help others if it comes up as a q again in the future.
Many thanks and pleased to hear that all is smooth again.
Also, I know that throttle bodies weare, but what wears on the throttle pots? I know they must move in some way to generate the positional readings and send voltage data to the ECU, but I know nothing more on this and would like to learn and help others if it comes up as a q again in the future.
Many thanks and pleased to hear that all is smooth again.[/quote]
Am not sure what gets worn on the throttle pots, but I emailed Dom at TVR Power explaining the symptoms when driving, and I got a reply sstating that it's nothing to worry about, my throttle pots are worn. So, ordered them from TVR Power (came the next day!!), and County TVR replaced them, at the same time, re setting the throttle bodies.
I would love to have my throttle bodies 'bushed' to reduce wear, but as far as I know, only 2 places do that, Dreadnaught in Scotland and SFR Engineering, again many miles away from me. I believe they 'refurbish the exsisting bodies in situ, and don't replace them for new ones. I know this because I rang SFR and asked if they could send me a set with the bushes (being naieve!), but, alas, they need your car for a couple of days to do it.
I asked County how long it would take to order a set from TVR, but the poor guys there can't even get clutch parts for a customer's Cerbera at the moment, not their fault, but just down to lack of parts/action at TVR!
Many thanks and pleased to hear that all is smooth again.[/quote]
Am not sure what gets worn on the throttle pots, but I emailed Dom at TVR Power explaining the symptoms when driving, and I got a reply sstating that it's nothing to worry about, my throttle pots are worn. So, ordered them from TVR Power (came the next day!!
), and County TVR replaced them, at the same time, re setting the throttle bodies. I would love to have my throttle bodies 'bushed' to reduce wear, but as far as I know, only 2 places do that, Dreadnaught in Scotland and SFR Engineering, again many miles away from me. I believe they 'refurbish the exsisting bodies in situ, and don't replace them for new ones. I know this because I rang SFR and asked if they could send me a set with the bushes (being naieve!), but, alas, they need your car for a couple of days to do it.
I asked County how long it would take to order a set from TVR, but the poor guys there can't even get clutch parts for a customer's Cerbera at the moment, not their fault, but just down to lack of parts/action at TVR!
TUS 373 said:
Also, I know that throttle bodies weare, but what wears on the throttle pots? I know they must move in some way to generate the positional readings and send voltage data to the ECU, but I know nothing more on this and would like to learn and help others if it comes up as a q again in the future.
I had a similar problem recently and had to have one throttle pot changed.Looking up the problem with throttle pots in general basically the wiper wears through the resistive coating inside the pot and it starts "breaking up" sending bad infromation to the ECU & hence the un-even running.
Nick
Apologies for the confusion but it was actually just the 1st throttle pot that was causing the issue. New pot was £30, unable to tell cost of doing the work as the labour is lumped in with everything else.
Runs much better and ticks over at 1100rpm instead of 900, can idle along at 30 going through speed cameras and not look like it's hiccupping, also sounds even louder. Larger bill than expected as it also required rear short bushes with fitting of thrust washers which wacked up the labour costs and a heater ecu and water temp sensor. Car is still worth every penny though.
Runs much better and ticks over at 1100rpm instead of 900, can idle along at 30 going through speed cameras and not look like it's hiccupping, also sounds even louder. Larger bill than expected as it also required rear short bushes with fitting of thrust washers which wacked up the labour costs and a heater ecu and water temp sensor. Car is still worth every penny though.
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