Help needed before the hammer comes out !!!!
Discussion
Hi All.
I need some help if anyone can. I recently got my 450 back on the road after lot's of work, including fitting a Mark Adams chip, the car is going great apart from a stupid misfire which happens when it's warmed up and driving slow or in traffic or even when just ticking over. It splutters and misfires and the revs drop, if it happens when driving it soon goes by giving it some revs but it can be scary as the car all of a sudden lurches forward !!! .
Really need some help and advice on this one as totally baffled.
I need some help if anyone can. I recently got my 450 back on the road after lot's of work, including fitting a Mark Adams chip, the car is going great apart from a stupid misfire which happens when it's warmed up and driving slow or in traffic or even when just ticking over. It splutters and misfires and the revs drop, if it happens when driving it soon goes by giving it some revs but it can be scary as the car all of a sudden lurches forward !!! .
Really need some help and advice on this one as totally baffled.
Obvious one first, coil?
Have also had similar symptoms when main fuse went so no charging and low voltage to ECU.
To be honest could be any one of a number of things. E.g. my worst one was last time I had something similar I replaced all ignition components. No better so started taking engine to bits pre-cat was broken up and blocking exhaust and Cam had significant wear.
Another time I had this happen and just could not work it out. Car even completely stoped then justwent again as If by magic. Turned out it was a loose imobiliser plug that I must have dislodged while fiddling. Finally figured it out after another fiddling session after which it would not go. On the cusp of giving up I noticed two plugs no longer connected.
Spent ages trying to figure it out, could have taken it to someone who knows more than I but that is no fun
Have also had similar symptoms when main fuse went so no charging and low voltage to ECU.
To be honest could be any one of a number of things. E.g. my worst one was last time I had something similar I replaced all ignition components. No better so started taking engine to bits pre-cat was broken up and blocking exhaust and Cam had significant wear.
Another time I had this happen and just could not work it out. Car even completely stoped then justwent again as If by magic. Turned out it was a loose imobiliser plug that I must have dislodged while fiddling. Finally figured it out after another fiddling session after which it would not go. On the cusp of giving up I noticed two plugs no longer connected.
Spent ages trying to figure it out, could have taken it to someone who knows more than I but that is no fun
Gassing Station | Chimaera | Top of Page | What's New | My Stuff