My 2000 Vt Calais missing when under load.

[Nigel07]

my 2000 Vt Calais runs fine for about 20min when cold then when under load it starts missing. Have put new leads and plugs and still doing it... also just noticed when In park and rev engine to around 4000-5000 rpm the traction control off and low traction light flash and makes a beeping sound.. what would cause these problems. thanks....

 

[krusing]

Have you extracted any codes out of it ?
If not, I recon that would be your best option as a starting point.
Does sound like a Vacuum leak, as the Super6's have a few vacuum hoses than the standard L36's.

 

[Nigel07]

Haven’t done codes as no engine light on. Is it worth checking anyway.. I will check vacuum hoses 2day.. thanks

 

[greenacc]

Check anyway not all codes switch the engine light on.

 

[oska]

if you're trying to rev it before it reaches operating temp, the rev limiter @4500 kicks in

 

[Nic's VT]

Mine was doing this so I replaced the coils as well as plugs and leads. Hasn't done it under load since. I do now have a miss at idle however.

 

[Nigel07]

Finally found the problem.. Needed new dfi module and replaced coils as well. Runs like a dream now..