Ok guys, you may remember this little issue from before, but I really need some more expert advice on it.
Please offer any advice you can as this has me at the end of my tether.
The car in question is a 1997 2.0 16v TS 145.
Every 5 or 6k my car gets sick... It starts to hesitate\Kangaroo while I drive. I could be driving at any speed\rpm\gear and suddenly its like the fuel is being cut off and the car stutters like it has no fuel or air.
It doesn't matter if I put the foot to the floor during these "fits" it will still hesitate and will not rev. the revs just die off... then it will suddenly pick up again and VROOOOOOOOOOOOOOOOOOOM....the response and revs are back.
its seriously not nice when your driving in traffic and the car is kangarooing all the time.
I have had the car on the Alfa delaers diagnostic and also a local garages diagnostic machine. Both turned up the same problem in the BOSCH Motronic ECU error log.
"LAMBDA ABOVE UPPER LIMIT".
I replaced the Lambda twice already in the past 12 months. I thought I must have had a faulty one to fail only 6 months after installing it.
However the car started the erratic behavior again about 6,000 miles later. Once again its the same issue according to the diagnostic computer.
So, the question is... why is the lambda burning out every 6k. I know unburnt fuel in the exhaust might damage the lambda, so I have checked the plugs and they look consistent with good fueling etc. not burned\black or damaged.
The car is running very well and is very healthy (157bhp 156ft/lbs). The only mods to the car are a K&N filter and a full supersprint exhaust with decat pipe.
The lambda probe is before the CAT in the 145 so this has nothing to do with it I think.
As you can imagine, Lambda's are not cheap and Im getting fed up buying 2 per year. Is there any was I could feed a false signal to the Lamda plug so that it thinks everything is ok?
Im sure there is a certain voltage it is expecting from the lambda so maybe I can wire up a transistor to just do the lambda job? maybe not... but Im trying to think of any way out of this.
When the car runs right, its a pleasure to drive. fun, quick, nice. but its pure hell with this kangaroo behaviour.
Any (I do mean ANY) advice very greatly appreciated.
Also, does anyone know the very very cheapest place I can get a lambda from? the local dealer is costing me about 170euro!!! (120sterling). Can anyone help me get one cheaper?
I think I'll have to buy one anyways as I cannot afford to be without the car as I need it for work. So short term Im gonna have to bite the bullet and shell out for yet another lambda.
please ask around if you know anyone who may have experienced this specific problem. I can;t be the only one. surely. (I hope)
thanks for reading...