Hi there when driving my vw camper t2 we here a knocking sound from the back any idea wot it might be cheers

Change the ignition switch, and look at the car racks, only here the chance that you will find it is very small! Because your model is quite rare for the USA, or you can find it on some forums / Vw communities, enthusiasts may well know! VW club

wrong forum. try motor cycles?

That year they used the sensor and the cable either way most likely it has failed easy replacement.

Check this link also http://www.fixya.com/cars/t675420-replacing_speedo_cable_type25_vw_camper

maybe the fuel system is dirty? run some fuel system cleaner with your gas and it should fix the problem

The condensor you said it smells like gas the ponts are good but the condensor you might have to carry a extra one there are low condensor on the market. and the fuel pump make sure it goes in the carburator no out, check the oil make sure it doesnt internally leak, and look in the carburator does it squirt in there? and check its timing,now is the condensor for 6 volt system application or 12 volt aplication ? remeber 1976 T2 VW had 6 volt applications

Please re-post your question as it sounds like you are talking about the later vanagon and not the bay-window type 2 since the bay-window units did not have fancy idle control and stabilizer units.

need to check the main wires try putting a jump lead on the pos battery and then to strter to to see if it turns over if does then some thing wrong with wiring

There are access panel for these vehicles all the way toward the back just ahead of the transmission on the under side of the vehicle (floor board center remove the bolts to expose the shift rod mechanisms often time s they are broken or worn inspect and repair, there is also a mechanism up front you must remove the rubber boot to expose the hold down bolts for the shifter mechanism you may be able to readjust after greasing the mechanism to regain function, either way these are not easy mechanisms to work on be sure to scribe around the perimeter location of mounting plate on the front shifter before unbolting just as a reference point.

Faulty temp switch. replace and try. This component is prone to failure and is not expensive to replace.

Be very careful with this. I had a car that had the dash oil light flicker on and off then would come on for a few mins and go then stayed on. I assumed it was a dodgy connection. Turned out the oil pump was on the way out and cos I was still using it ended up snapping the crank shaft and made s#!t of the engine. Replacement engine was then put in.
Could be something small or something huge!!!