Very sick Tuscan
Discussion
Hi Guys - I have just joined Piston Heads as I have recently purchased a 2004 TVR Tuscan - the vehicle was purchased as a none runner and has been stood for over a year after have the engine was removed for a head gasket replacemet - I got the engine started after chaging the battery and fixing some wiring issues - basically the engine is running very rough (misfiring - stalling), but more seriosly if the engine is left idling one of the catalytic converors starts glowing red hot. the plugs and leads have been replaced, but no change. I would try a new coil pack, but I live in Saudi Arabia and everthing has to be imported due to no dealers or speacialists out here. I wanted to know if anyone had any ideas on testing the coilpack before I order one - or are there any other thing to be checked??
The cat that's glowing red has probably collapsed so is blocked. It's a common fault with the cats on the Speed 6 engine, especially in hot climates. You're best off taking them off and having a look. Most people knock the cats out (me included) and run them de-catted as bits can get sucked back into the engine which ruins it.
You'll need to check the coil pack function as it's a common fault, as well as failed lambda probes. Giving the crank sensor a clean can also help with rough running.
Hope that helps and I hope you get it running properly soon!
You'll need to check the coil pack function as it's a common fault, as well as failed lambda probes. Giving the crank sensor a clean can also help with rough running.
Hope that helps and I hope you get it running properly soon!
PorscheKSA said:
thanks for the information since you have removed your cats - please advise if any changes are required to the lambda probes?? also I know that many components of the car are borrowd from other manufactures - is there a coil pack suitable from another vehicle??
Andy the coil pack is off an Opel or Vauxhaul V6 (Omega). Be careful to note the plug leads connections on the coil as they DO NOT match the numbers identified on the coil pack. If you wish, send me an email and I will send you back a photo that shows the correct coil and leads connections. You wont be able to get the S6 oil filter over there either so use the RV8 version (Range Rover, its actually better than the smaller S6 filter, the bypass valve tends not to open at high RPM. I use it on my engine).A Tuscan in Saudi, you will need to keep it in doors during the dust storms... I'll bet it turns heads over there. Wont be long and you will be flooded by locals asking you where you got it from..... Que the demand for second hand TVR's
I envy you as I have been trying all ways to get my Tuscan out to Philippines... NO chance they do not allow right hand drive cars into the country... full stop.
Good luck, I hope you like being centre of attention
Thanks for the info yzf1070 - I hope to have the vehicle running very soon - hopefully in time for the winter - when it's not too hot!!!!!!! I will send you an email tomorrow as I only joined the forum yesterday. Your right there aren't many TVR's in Saudi - I only know of one which is a prototype Sagaris II, owned by a Prince. He is actually the original owner of my car.
Where in the Phils are you trying to take your car??? My wife is from Bacolod City and while I haven't thought about takng the Tuscan I should hope it would be simple since it's left hand drive.
Where in the Phils are you trying to take your car??? My wife is from Bacolod City and while I haven't thought about takng the Tuscan I should hope it would be simple since it's left hand drive.
Chap - the cat IMHO is probably fine. They will get incendiary hot if there is a misfire because, it has to work so hard to eliminate the unburnt fuel. Ovbiously be careful of running the engine in this condition; if nothing else becuase it'll burn all the paint off the scuttle and bonnet and will also delaminte the fibreglass (due the heat).
Good luck with it.
Good luck with it.
PorscheKSA said:
I only know of one which is a prototype Sagaris II, owned by a Prince. He is actually the original owner of my car.
That's interesting. I had heard that the Prototype Sagaris II had been gifted by NS to a friend in Saudi. I wonder if he was punting for funding? What's the name of the Prince in question?Anyway, get the coil pack changed (they're not expensive, see here http://www.powerstores.co.uk/?t=si&item=748 ), check the cats and then see how she runs.
Hi dvs dave - I'm not sure who the owner of the Sagaris is but I'll keep my ears open - I'll try nd get some picture and post them.
thanks again for the information - as per one of the earlier posts I have been told the coil pack is an Opel model - while they don't sell many here we do have a dealer so I'll try them first before importing.
If I decide to decat the car - are there any changes necessary to the lambda probes???
thanks again for the information - as per one of the earlier posts I have been told the coil pack is an Opel model - while they don't sell many here we do have a dealer so I'll try them first before importing.
If I decide to decat the car - are there any changes necessary to the lambda probes???
PorscheKSA said:
Hi dvs dave - I'm not sure who the owner of the Sagaris is but I'll keep my ears open - I'll try nd get some picture and post them.
thanks again for the information - as per one of the earlier posts I have been told the coil pack is an Opel model - while they don't sell many here we do have a dealer so I'll try them first before importing.
If I decide to decat the car - are there any changes necessary to the lambda probes???
You don't need to make any adjustments to the ECU or Lambda probes. Just knock the cores out and away you go with a bit more noise and pops and bangs! Another advantage of de-catting is much reduced engine bay and cabin temperatures. thanks again for the information - as per one of the earlier posts I have been told the coil pack is an Opel model - while they don't sell many here we do have a dealer so I'll try them first before importing.
If I decide to decat the car - are there any changes necessary to the lambda probes???
What sort of emissions tests do you have to pass in Saudi as a de-catted Tuscan with the standard ECU won't pass a UK emissions test without a little bit of jiggery pokery?. FYI, I believe that the TVR Power decat chip is only suitable for non "S-spec" engines, but it will pass an MOT.
I note in your original post that the engine has been removed to replace the head gasket. There's a very good chance that whoever put it back together has indeed put the HT leads back on in the wrong order. As others have mentioned, and unless you know otherwise, any unfamiliar mechanic would assume that the numbers on the coil pack corresponded to the actual cylinder numbers!
Edited by dvs_dave on Tuesday 22 September 14:46
Is the firing order 153624 for the speed 6?
Any ideas why the coil leads would be crossed as the coils a standard Vauxhall part?
DIS fire two cylinders at a time, one on the compression stroke and the other on the exhaust stroke.Looking at the picture of the coil pack, the top and bottom would fire together.
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