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EVOeng

Member

• Sep 1, 2013

• #1

Hi All,

I'm in need of your help again.
Just driving my 2002 4.6 P38 back home and noticed a vibration on start up and a small but noticeable rotten egg smell. Drove a few miles (didn't notice the smell again until I was in traffic) and it seemed like it was down on power slightly - it didn't have the pull it normally does have. The vibration was worse at low revs. The car has covered about 90,000 miles.

Any views on what the issue could be?

Best,

EVO

 

kevwill

Active Member

• Sep 1, 2013

• #2

Rotten egg smell and loss of power would mean cat converters have broken up.

 

StuckAgainSteve

Well-Known Member

• Sep 1, 2013

• #3

kevwill said:

Rotten egg smell and loss of power would mean cat converters have broken up.

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Or a lambda sensor is shot so the affected cat isn't lighting up properly due to incorrect air/fuel mixture - which could also cause a misfire.

Where are you roughly in London - you might have someone near you with diagnostics willing to help.

 

doz

Active Member

• Sep 2, 2013

• #4

Maybe a misfire leading to unburnt fuel in the exhaust. This would also count for the rough running.

 

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EVOeng

Member

• Sep 2, 2013

• #5

Thanks for the help guys, I'm going to be dropping the car off to get repaired soon.
Steve, I'm based in North London.
Doz, I think you may be correct. From what I can tell from previous invoices the then owner replaced the ignition leads as the car was running rough - I think it may be the same thing again. Fuel consumption has also increased and I have noticed that the revs fluctuate.
I will keep this thread updated.

 

kevwill

Active Member

• Sep 2, 2013

• #6

If he replaced ignition leads would have thought that would have sorted problem.
With a rotten egg smell my money is still on cat converters need replacing. Would give your other symptoms as well.

 

StuckAgainSteve

Well-Known Member

• Sep 3, 2013

• #7

EVOeng said:

Thanks for the help guys, I'm going to be dropping the car off to get repaired soon.
Steve, I'm based in North London.
Doz, I think you may be correct. From what I can tell from previous invoices the then owner replaced the ignition leads as the car was running rough - I think it may be the same thing again. Fuel consumption has also increased and I have noticed that the revs fluctuate.
I will keep this thread updated.

Click to expand...

I'm in Enfield are you far from there? I might be able to plug my lynx in and have a poke round. Pm me with more accurate location details if I'm close enough to help.

 

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EVOeng

Member

• Sep 12, 2013

• #8

Steve, many thanks for the offer! Really appreciate it.
It was the HT leads as first thought - I think the previous owner put some Britpart ones on. Now it's MOT time for one of my other cars.