One STRANGE fault..

Ducklakeview

Lifer
Merseyside
So tonight, I had forum member over with her car, and a couple of faults...

So Shell mentioned that she'd had the roof motor relocated last year, but that lately it had decided to work only when it wanted, and that the manual release did not operate, the second fault was a bit of a weird one, best explained by this video...

[youtube]rDmdV6dh4QE[/youtube]

After thinking WTF!! I got to work..

Firstly, the roof motor was a sorry looking thing, and judging by the fact that both of the 4mm allen bolts holding the motor to the pump had their heads filled with rust, I had my doubts that the motor had ever been removed from the pump, let alone stripped.. It was also loosely secured with a cable tie looped through the hole in the carpet where the fixing button had been removed, around the cable loom and out through another hole. So it was moving about quite a bit. The bypass on the pump was also seized solid.

So I cleaned up the heads and removed the motor before stripping it. It was a mess inside, and I was surprised it worked at all!

Cleaned it up in my own way, and back together. Tested and working fine, so refitted it to the car and it was working fine.. I then bolted one of my large cable tie bases into place and secured it properly.

Then onto the noise.. Shell said it was continuous as long as the ign was on, and she had been driving it like that for a week :cry:

I isolated the noise to the left rear speaker, so it was out with the head unit, and probing the speaker connector. 3 of them read 4.1 ohm, the fourth read less than an ohm, so we had either a speaker problem, or a short..

Decided to fit a jump lead to one set of the correct reading terminals in the speaker plug and use this to check the 4 channels coming from the HU, these were all producing sound, so it was down to the speaker wiring..

After scratching my head I decided to remove the panel and cubby hole behind the passenger seat, but nothing was apparent..

I then got back into the boot and had a good look at the wiring..

Turns out, that as the motor had been secured to the loom, then as it had been twisting from side to side as it was used, it had pulled the loom tight and where it passed through the bulkhead, it had chafed against the metal, causing the short...

Cable repaired and secured away from the edges, and as the motor was now secured to the bodywork, it won't happen again..

Another satisfied customer...


Mike
 
Haha! Wow, what a weird noise. You would never have expected that from a shorted speaker wire. Well done for diagnosing and fixing :thumbsup:
 
Great news - I just wish I didn't live over 200 miles from the duck lake. :(
 
Sounds like someone had installed an old ZX Spectrum and was trying to load a game up. Or the airbag was deflating.

She drove with it like that for a week? Did she go deaf?
 
Paulr said:
Sounds like someone had installed an old ZX Spectrum and was trying to load a game up. Or the airbag was deflating.

She drove with it like that for a week? Did she go deaf?

Lol, was surprised she didn't have ear plugs in when she got to me after a 30 mile drive in the rush hour!

Mike
 
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