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I've just bought a clarke xr75 diesel space heater. I was told it needed a new switch, I bypassed it but still no power. Fuses are good. Any ideas?

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  • Cars & Trucks Master
  • 14,585 Answers

Hope you got it cheap. First I would check the heat sinks. Then go after the PC board.

Posted on Jan 02, 2017

  • Michael Ratcliffe
    Michael Ratcliffe Jan 02, 2017

    If I bypass the pcb the motor will spin and the pump delivers fuel but there is no spark because no pcb. What are the heating sinks? For some reason all the earth cables inside were scorched, I have replaced them now

  • Randy Ohler Jan 02, 2017

    Heat sinks are what shuts down the unit when at a certain temperature or not enough air flow to keep the unit cooled down enough. I can bypass many switch/computer things. This is as far I as go with fire. I did it one time, back in the 80's. My house burned down. I don't recommend you keep playing with this to make it work. Count it at a lose and move on.



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Posted on Jan 02, 2017

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SOURCE: i have a stanadyne injection pump on a 1986 ford

I would take it to a good injection pump shop. Injection pumps are pretty finiky to work on. They require some special test equipment also. Just my 2 cents. Good luck.

Posted on Sep 26, 2009

  • 289 Answers

SOURCE: 2004 f350 4x4 6.0 diesel electrical problems

Locate the fuse box under the dash panel. Pull the fuses one at a time and inspect. They are very hard to judge if the fuse(s) are blown unless you pull them out to inspect.

Posted on Dec 08, 2009

  • 1 Answer

SOURCE: i have a 99 superduty diesel f250 the heater is

make sure the hoses down by the right side kick panel didn't come unplug from someones feet. then make sure the vaccum pump on the right side fender is working. when there is no vaccum it will go to defrost

Posted on Jan 06, 2010

SOURCE: power windows wont work on 94 grand cherokee.

You need to confirm power and ground at the switch. There should be at least two larger gauge wires to the switch. One will have switched ignition power (probably a red or orange wire) the other will have a constant ground (will likely be a black wire). If you don't have that you'll have to trace the wires back and see why. It most likely has a broken wire in the drivers door jam or a bad ground somewhere.

Posted on Aug 14, 2010

  • 3799 Answers

SOURCE: windows will not work from any switch,has power to switch &a new ditch & module, fuses seem good

If you have power to the switch, you should check that the system has an earth. This is one of the most important things in electrics. As you have eliminated everything else that is all that is left. I hope this is of some help.

Posted on Dec 22, 2011

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