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UK MOT's

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CrewCab:
Mmmmmmm  :scratch: ............. can you pull the ABS fuse and try it    :dremel:

<edited to add>    or have we already been down that road

CC

Darren:

--- Quote from: CrewCab on September 23, 2009, 06:50:50 PM ---Mmmmmmm  :scratch: ............. can you pull the ABS fuse and try it    :dremel:

CC

--- End quote ---

if only I knew where is was? It's a good point though.......I'll look into it.

It's a bit of a pain as the tester was getting tired of me. I went back four times in all after trying different things. I didn't allow the testing station to do any work so he wasn't getting paid for anything with each test which took up his time. I don't agree with testing stations finding faults just to get work in. I guess he got fed up in the end and gave me a pass.
But we have to come back to the same conclusion that a 60% imbalance on the front brakes would be dangerous whilst at the same time this car brakes very nicely and safely on the road.
When the wheels are tested individually they both have the same pressure giving very good results. When tested together one is 60% down on pressure. It just doesn't make any sense to me or the tester?

I'm going to try to find another testing station and see what happens on another machine. At this moment in time I think that would be a wise move.

dsquire:

--- Quote from: Darren on September 23, 2009, 07:00:04 PM ---
if only I knew where is was? It's a good point though.......I'll look into it.

It's a bit of a pain as the tester was getting tired of me. I went back four times in all after trying different things. I didn't allow the testing station to do any work so he wasn't getting paid for anything with each test which took up his time. I don't agree with testing stations finding faults just to get work in. I guess he got fed up in the end and gave me a pass.
But we have to come back to the same conclusion that a 60% imbalance on the front brakes would be dangerous whilst at the same time this car brakes very nicely and safely on the road.
When the wheels are tested individually they both have the same pressure giving very good results. When tested together one is 60% down on pressure. It just doesn't make any sense to me or the tester?

I'm going to try to find another testing station and see what happens on another machine. At this moment in time I think that would be a wise move.

--- End quote ---

Darren  :coffee:

Having just read this post about the individual testing of the wheels. Do you mean both front wheels together gives 60% imbalance and then left front wheel seperate is OK and right front wheel seperate is OK. If this is the case then I think it is a fault in the test machine and you would be well to have it tested at another test station.

If I remember correctly this is a 4 wheel drive? When doing the test is the veichle in neutral with the motor idleing?

I know these might seem like a lot of dumb questions sometimes but it might just cause someone to spit out a word that you can take to the bank. :doh:

Cheers  :beer:

Don

Darren:
Evening Don, You understand the situation perfectly, that's the strange thing. Tested individually each wheel has very good and almost identical pressure, within 2psi of 180 or so.
So about 0.5% difference.

But when tested together there is a 60% difference which flags up a fail ......sorry I didn't make that clearer at the start.

To me this all sounds very illogical.... :doh:

It's just two wheel drive at the front, but I don't think this has any bearing on the issue?

Darren:
I should add that what happens is the left side lags behind in time as the pressure builds up, but they both end up equal in the end.....I wish I had a graph to show to make it clearer.......

But that's not to say it's the car that's lagging, it could be the machine. We just don't know at this point.

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