Frustrations of working as a Motor Vehicle Technician.
- Thread starter philw696
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Wack61
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I can now add coil packs to the list of what it' s not
Spark plugs
Lambda sensor
Crank sensor
Coil packs
I don't know what to do with it, I can't sell it private as is because I wouldn't like that done to me
WBAC are offering peanuts for it
If I PX it the range rover will have to go and I REALLY like it
I'm reluctant to throw another £500 at it without a fix being guaranteed
philw696
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So what codes are coming up on the diagnostic gear ?
Have you gone through live data ?
Wack61
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No codes at all at the moment
The only codes that have ever come up are pre and post cat lambda but the general opinion is those sensors are the effect, not the cause
The 500s are known to have ECU problems so he did suggest either buying an ecu with the same numbers and swapping it or sending it off to be tested
I haven't looked at live data because I wouldn't know what to look for, it's so random when it does it
Tickover, normal driving, full power, you just don't know when it's going to do it, loss of power, eml on for 1-2 seconds then back to normal
rockits
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I had something similar years ago on an old Cavalier SRi 130. Took it to Vauxhall who plugged it in and said it was the airflow meter. Sealed part and £850 + VAT. Car was only worth twice that. So I thought screw let's crack the sucker open and see what is inside!
Cut the seal off and popped the top lid off to find a spring and parts fly out
Managed to work out how to get it all back together again. After looking at all the components we found a potentiometer/variable resistor soldered to a PCB. It had 3 legs/points and after desoldering it off you could see it had heated up and part melted the plastic body. Now and again two of the legs/points were shorting against each other.
Took it to Maplins to see if they had one or something similar. They had exactly the same part. Was 60p. Soldered it on. Put the AFM all back together, back on the car and it fixed the fault to be driving perfectly again. Well as good as an SRi 130 ever was
rockits
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Not sure if that helps by the way but my fault was similar. Worked fine on light to medium throttle. When you wanted near or full throttle it would pretty much reduce power to virtually nothing. Quite a problem when you pull out of a fast junction and put your foot down for nothing to happen! Quite dangerous and a liability.
2b1ask1
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My eldest lad had a Saxo that was fine around town but on a run would cut out after 20 mins, changed just about everything to no improvement. Evrr we n changed the earth straps on it. Decided, one last effort and changed the fuel sender in the tank. That fixed it but we had made the decision to stick it into auction anyway, for the power steering to fail on the way to Chelmsford Some cars are just not worth the effort.
RodTungsten
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Our Saxo power steering used to fail occasionally - daughters taught to whack the electric pump with a stick!
2b1ask1
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That was what I did, the power cable in was loose! I had just had enough of it by then.
Wack61
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It's been on a snap on ultra with the same no codes
The abarth specialist has scanned it with what I assume was dealer level diagnostics, no codes stored
I really was hoping it would break down
It didn't do it on the 220 miles drive home, a few days later I had the cambelt changed and the forge induction kit put back to standard but again opinion is if it was a timing issue it wouldn't be so random
allandwf
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Was the wee Abarth remapped? Mine had 230 bhp and no issues in 2 1/2 years of ownership. Perhaps they have had fingers in places they shouldn't if it has been.
Wack61
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It has been mapped but he took the map off and it was still the same
If it did it say when driving over a speed bump I'd think maybe a frayed wire shorting but it does it ticking over when I'm not moving
I think it's something electronic breaking down which causes a stutter, the lambda sensor senses the change and throws the eml but as it's only for a second it all goes back to normal
On the motorway at speed you barely notice it's happening, the one time it did it at 6000rpm it almost put my head through the windscreen
zagatoes30
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Give Paul a ring at A4Alfa, he's in Aylesbury so not close to you but he does loads of work on these things nowadays he might have some knowledge that might help
philw696
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The saga continues and I'm certainly not going near another Ad Blue Mercedes Benz again.
Please can you advise. On 9 February I took my car to be repaired at a well reputed Mercedes Benz dealership. I had to take out a bank loan for the repairs as only MB could do it. Yesterday when I was driving the car and only clocked up 650 Kms exactly the same problem has occurred. The garage have agreed to look at the car tomorrow. My question is, do I have to pay for further repairs and the diagnostic they will need to do, even though they said the fault was fixed? Thanks in advance.
Please can you advise. On 9 February I took my car to be repaired at a well reputed Mercedes Benz dealership. I had to take out a bank loan for the repairs as only MB could do it. Yesterday when I was driving the car and only clocked up 650 Kms exactly the same problem has occurred. The garage have agreed to look at the car tomorrow. My question is, do I have to pay for further repairs and the diagnostic they will need to do, even though they said the fault was fixed? Thanks in advance.