Hi,

Took the car to a garage last week after it was chugging along and dying at idle with engine light on.
Diagnosis says it was the air map sensor (manifold), had it changed and codes cleared.

Light cam on next day, guy said it was the Cat sensor its prob bit dirty from misfiring etc, but the car will run fine (which it was) so don't stress to quick about money. Codes cleared again.

from then it ran fine for about 30 miles or so over the weekend, then on my way to work this morning felt a bit of a chug while driving along expecting the worst and it soon followed. stop at lights and it died

started it up and kept reving the engine so i could take off and moved it to a side road still chugging abit. (train to work)

Bought the car not long ago and i am having major doubts, and now trust issues i may cut my loses and trade it in.
Not sure what i hope to gain from this post but its good to share in case anyone can help.

need the error codes to correctly diagnose i'm afraid.
I know what you mean about trust issues.
I don't trust ours any more.

Unfortunately i cant be there when they plug it in. I work 9-5, as do they and they shut at the weekend. I dont think the garage is taking me for a ride (mind the pun) as he does all the work for a very good friends company, and it was the same friend who rang to book me in.
He said he cleared the codes ran it and it came up with the Air Map Sensor. Be interesting to see what come up now same symptoms.
however the first time i put it in the revs where bouncing about at idle before dying it doesn't do that now.

Even after getting it home just after it had been "fixed" i was still thinking something was up... the revs where changing between 850 to 1000 every 10 seconds or so (not bouncing).
To think about it could a cylinder not be firing when it is doing this (850)... and then firing up (1000)? Hmm.

Will check the wiring tonight to the changed sensor also i will run it and listen to the engine with the bonnet up see if it is a cylinder not firing.
I know that these puntos run quite anyway, i had to check the engine was on in my previous one.

Its going back in the garage tomorrow though.

Thanks

:idea:

So i have done some digging since i got home and found this:
Method Number 2 - Clogged Cat.
http://www.wikihow.com/Determine-Why-a-Car-Stalls-at-Intersections

Hopefully this is my problem as it previously flashed up with the cat sensor last week, I will put it into the garage tomorrow and if it comes up with the cat sensor again I will get it swapped out. *fingers crossed*

With a blocked cat you will be losing back pressure and may stall? Snap on do a cat cleaner! Really good stuff

alfieallen29 said:

With a blocked cat you will be losing back pressure and may stall? Snap on do a cat cleaner! Really good stuff

Click to expand...

It won't unblock a physically blocked CAT though.

Well unless the actual platinum is shrivelled you still can flush the car out but if it's ****ed it's ****ed

alfieallen29 said:

With a blocked cat you will be losing back pressure and may stall? Snap on do a cat cleaner! Really good stuff

Click to expand...

It is stalling at idle, and suddenly loses power at times in any rev range while driving (car jolts) and then has power and jolts again etc.
It feels like an electrical problem with the jolting, but given the second fault code last week was the Cat sensor and it is stalling and losing power at intervals (like driving a kangaroo) it would seem to point to the Cat.

I will most likely just replace the Cat from a scrap yard if i can find one.

Yes if it was my car I'd get a second hand cat and see how that goes! Good Luck!

Car was in the garage today, apparently it is the Cat sensor code that's flagging up but he doesn't think it is the cat as it revs up fine but once under load(driving) the car jerks.
I see his point because even stationary the revs should struggle in some way if the cat is blocked but doesn't...