Dash problems continued - Is my next plan logical?

[VAGMAN1]

To recap the speedo and trip counters aren't working on my car, plus fuel guage is all over the place. Also car judders at 1200-1400rpm in 2nd and 3rd. I'm assuming juddering is linked to dash playing up.

Anyway, basic diagnostic showed no fault codes at all and have had the dash tested - no faults there either - all chips are fine and the dials are working.

Car is booked in at stealers for diagnostic next week, but in the meantime......

I'm thinking it has to be wiring?

> dash works fine
> very unlikely fuel sender and the 2 speed senders would all go down at the same time
> if the senders did go down a fault code would be generated

I am thinking if the senders are fine and the dash is fine that it MUST be wiring related? Logical????

So I'm going to get a multi meter, take out the dash pod and check the voltage over all the dash plug pins i.e. between each pin and the earths there is 12v, and then I'll check the resistence on the earth cables.

The above should check out power supply issues e.g. bad connections, broken wires and shorting wires.

Suggestions/ideas????

 

[Mo-S3]

hmm I really suggest you dont prod around the dash pod with a muti meter. the immobiliser is built into the pod and it will short it causing it not to start.
Trust me i learnt the hard way too a while ago.

 

[nick1973]

exactly the same has happened to mine will be having al ook in the morning any ideas where the speedo pulse sender is?

 

[VAGMAN1]

I'm not going to prod the dash pod - just the plugs that go in to it!

 

[madvw]

Electrical gremlin sounds likely.

I wouldn't take it to a dealer to diagnose though. I had a MK2 golf that was playing up, and had an electrical problem years ago, and i took it to a dealer. They spent a week fannying around with the car, charged me for that, then took it to an electrical specialist... they even had the cheek to charge me their time for the 7 hours it was at the specialist as well as the 7 hours specialist charges....

 

[nick1973]

I REMOEVD MY SPEEDO DRIVE PLUG AND FOUND IT WAS DAMP DRIED IT OUT ( CABLE TIE TO INE OF THE RAD HOSES AND LEFT IT DISCONTECTED FOR A COUPLE OF DAYS PERFECT NOW