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drroberts490
21-08-12, 07:05 PM
Traveling home from holiday on Saturday, as I was approaching Southend had to slow and then crawl along in the traffic. After about 20 - 30 mins the revs had a bit of a moment and then cut out, attempted to restart but just kept struggling with the revs and cutting out. Gave her a rest for about 15 mins and she started again only to do the same 200 yards up the road.
Gave in and called the AA, they turned up about 30 mins later and typically she started fine, AA guy followed me to the In-Laws with no problems.

At no point did the temp gauge go up to suggest she was overheating even though it was a roasting day and i was crawling in traffic. Drove back to Wiltshire Monday and had no problems. Anyone else experienced anything similar? Must admit was a bit sad, had her nearly 9 years since new and it is the first time she has let me down.
stamford
21-08-12, 07:35 PM
Get a diagnostic reader plugged in to see it any of the sensors are showing signs of breakdown. At this age things will start playing up at random times, mine has lately and not surprised as it is in my 8th year of ownership, so don't be too down-hearted.
peterzs
21-08-12, 07:36 PM
Cam or crank sensor needing changing/cleaning.
POMPSKI
21-08-12, 07:37 PM
Sounds like my dirty IACV to be honest, exactly the same symptoms.
grimmy
21-08-12, 07:38 PM
Have heard of the crank or cam sensor causing those type of problems.
drroberts490
21-08-12, 07:49 PM
Cheers for the advice guys, I have cleaned the IACV before but must admit revs have been creeping higher when cold again recently.
Never touched the Cam or Crank sensor before, will have to search for a how to on here
mhamps
21-08-12, 08:01 PM
Not sure if the zs has one but i had another car that did the same sort of thing snd it was the egr valve!

Matt
stamford
21-08-12, 08:08 PM
I may be wrong but pretty sure the EGR is a diesel only valve. Always best to get shot of them and fit a by-pass kit.
drroberts490
21-08-12, 08:32 PM
Is the crank sensor in question item 2? Can't find the cam sensor yet
petet16
21-08-12, 09:06 PM
To locate the cam sensor it is on the front face of the front cylinder bank at the gearbox end of the engine
number 2 is the crank sensor, number 6 is the cam sensor.

cam sensor
http://www.rimmerbros.co.uk/ItemImages/Large/NSC000310.jpg
petet16
21-08-12, 09:14 PM
Do you have a scangauge fitted, it's ideal for checking codes when random stuff happens.
James Raby
21-08-12, 10:24 PM
Wish I had of gotten one myself, so often random stuttering or loss of power and no light, scan gauge pick it up there and then..,, next job!!
talkingcars
21-08-12, 10:41 PM
Are the cooling fans working?
Fred68
22-08-12, 08:09 AM
To locate the cam sensor it is on the front face of the front cylinder bank at the gearbox end of the engine
number 2 is the crank sensor, number 6 is the cam sensor.

cam sensor
http://www.rimmerbros.co.uk/ItemImages/Large/NSC000310.jpg

Be warned the crank sensor is a real b......d to get out and often comes out an pieces!!