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[megaomega123]

Car is idling bang on 500, needle does not move at all. When sitting in the car it rocks from side to side and knocks a bit at the back. The engine sounds to be struggling to keep going. Big blow in exhaust just before back box.

Would the blow alone be causing this? I have videos if anybody so desires.

[Markjay]

...Big blow in exhaust just before back box.

Would the blow alone be causing this?...

Personally I think the answer is yes.

[megaomega123]

Exhaust is now done, so it is new from cat back. The idle has remained the same. The car rocks from side to side when idling and sounds rough but the rev counter sits still at 500rpm.

This has started happening since doing the cam cover gaskets. Is it possible I have done something wrong. Also as added info the aux belt tensioner is in urgent need of change. ( cambelt, water pump and aux tensioner being don on Tuesday).

Is there anything else that could be causing this issue. Videos of the idling below.

http://s55.photobucket.com/albums/g135/phate123/?action=view&current=50bee528.flv

http://s55.photobucket.com/albums/g135/phate123/?action=view&current=4729a4f4.flv  

[Mike Collins]

What is that orange light? if it's EML check for error codes.

[megaomega123]

What is that orange light? if it's EML check for error codes.

Thats handbrake, just looks orange on my sh*t camera

[geoff]

have you tried cleaning idle control valve and breather pipes ,this may cause this

[megaomega123]

have you tried cleaning idle control valve and breather pipes ,this may cause this

All done during camcover gasket m8 icv cleaned to within an inch of it's life.

[geoff]

have you checked to see if timming is set right all so and when was your belt last done,needs to be done every 40 thousand miles or every four years which ever comes first,plus tensioners to be changed with belt

[megaomega123]

have you checked to see if timming is set right all so and when was your belt last done,needs to be done every 40 thousand miles or every four years which ever comes first,plus tensioners to be changed with belt

It is being done on Tuesday (can't come soon enough). I just need to know the symptoms of timing being out or belt and tensioner just about to let go.

[Mike Collins]

Has the EGR been blanked off, that helped on mine.

[megaomega123]

It hasn't. Not sure how to do this. Is it a good idea to mask a problem that could be something more serious?

[geoff]

i would try belt and tensioners first ,if it is retarded and timming is out can really run rough

[Markie]

icv back in properly? checked for air leaks? lets do the basics first....

its unlikley to be timing if its happend since cam covers and only since then,,..

[Mike Collins]

I doubt that blanking the EGR would mask anything other than a leaking EGR. It has been disturbed during the cam cover change I think. Easy to do, thin sheet metal under the valve, should be a descripition on here.
Don't unplug the connector though, that will generate an error.

[JamesV6CDX]

I think this is going off track a bit.

A blowing backbox wouldn't cause it to run unevenly. My V6 doesn't even HAVE a backbox, and albeit loud, it goes like sh*t off a shovel

The way the OP describes the car as "rocking from side to side" is telling me that it's misfiring.

First job is to check out all the plugs and leads. Check they're in securely, and in the right place!!

I suspect after the camcover change, 2 x plug leads have been crossed. Usually 4 and 6 on the 2-4-6 (passenger) bank... near the bulkhead.

I'll put money on it