Running Rough

[cooldudeoli]

Hello, my Cerbie 4.5, the slave cylinder seals went so had them replaced. Since then the cars been back firing and popping really bad, and totally running terribly. I can't think of anything that changing the seals could do. I have checked the HT leads, plugs etc. Does anyone on here have any idea what it could be? Its mainly at low revs, once u open her out she clears and runs sound. Also Iam in Wales so what would be the closest, or best TVR specialist to take a look at her for me. Thanks guys

[Cyclone1]

cooldudeoli said:

Hello, my Cerbie 4.5, the slave cylinder seals went so had them replaced. Since then the cars been back firing and popping really bad, and totally running terribly. I can't think of anything that changing the seals could do. I have checked the HT leads, plugs etc. Does anyone on here have any idea what it could be? Its mainly at low revs, once u open her out she clears and runs sound. Also Iam in Wales so what would be the closest, or best TVR specialist to take a look at her for me. Thanks guys

Throttle Pots??? or Lambda sensors???

Edited by Cyclone1 on Tuesday 27th June 13:08

[Duke Thrust]

Did it get left out in the rain or cleaned with a pressure washer as part of the garage clean every car policy type thing? Water in the electrics?

[marcus1970]

cooldudeoli said:

Hello, my Cerbie 4.5, the slave cylinder seals went so had them replaced. Since then the cars been back firing and popping really bad, and totally running terribly. I can't think of anything that changing the seals could do. I have checked the HT leads, plugs etc. Does anyone on here have any idea what it could be? Its mainly at low revs, once u open her out she clears and runs sound. Also Iam in Wales so what would be the closest, or best TVR specialist to take a look at her for me. Thanks guys

Idle speed - rpm?
MB

Edited by marcus1970 on Wednesday 28th June 16:38

[cooldudeoli]

Idle rpm 900 when cold, then 1000 once warmed up. It pops back alot when I release the throttle, at around 2000rpm. I took it for a spin just now, and it was alright at cold, then got popping once it warmed up. Gave it a blast, then it cleared completely. So not sure if the ECU has corrected itself or something. Will give it a spin tomorrow to check *Fingers crossed* hehe

[marcus1970]

cooldudeoli said:

Idle rpm 900 when cold, then 1000 once warmed up. It pops back alot when I release the throttle, at around 2000rpm. I took it for a spin just now, and it was alright at cold, then got popping once it warmed up. Gave it a blast, then it cleared completely. So not sure if the ECU has corrected itself or something. Will give it a spin tomorrow to check *Fingers crossed* hehe

Sounds about right - did the MIL light come on at all?
MB

[Raceproved]

Have you got the lambda sensors connected to the correct cylinder banks i.e. lambda in odd cylinder manfold (left bank) connected to the odd cylinder loom plug? It's possible to mix the plugs up following gearbox removal, and cause the symptoms you describe. Definitely worth checking.