Fuel pump problem and the black box

[timshap]

My 94 Chim 500 has recently gone to the tvr workshop as I couldnt diagnose the non primiing of the fuel pump.
The problem has been located to the black box under the dash as it works when one keeps tapping it apparently.

The box is the one with all the coil type relays in and part number MO462 which I know was fitted to the early chims. We believe the part to be obsolete and know the company that made them went bust several years ago. Does anyone have any suggestions re installing the updated box and therfore new alarm system I guess or someone who can effect a repair to the relays or icb etc..

Help!

[paulathome]

You should get all the help you need from Carl Baker he sells sirens, key fobs and alarm modules and
will do module reprograming aswell as full installs.
Top bloke too.
Paul.
http://www.tvruk.tv/www.tvruk.tv/index.html

[blitzracing]

The fact that it works or otherwise when you knock it show its a physical problem such as a poor relay contact or bad solder joint. If you can get the unit open and open up the relays a bit of fine wet and dry paper between the contacts will probably get it going again.

[bsdnazz]

blitzracing said:

The fact that it works or otherwise when you knock it show its a physical problem such as a poor relay contact or bad solder joint. If you can get the unit open and open up the relays a bit of fine wet and dry paper between the contacts will probably get it going again.

It sounds like a relay in the immobiliser is faulty. If the OP's is anything like my old one then he'll find it packed with black resin that makes access near impossible. Given time and some sharp tools I'm sure one could remove all the potting compound but life's too short!

I had a similar immobiliser relay problem affecting the starter motor and Carl Barker replaced it with a new immobiliser and I've had no more immobiliser problems since.

[spend]

Rip the lot out & fit a more modern alarm / immob / cdl with remote boot opening if you are going to keep it?