Please Please help! My HiJet 993cc


I'm stuck!! My Hijet keeps overheating and I know that it is the temperature sensor/transmitter. When i bought the van, the guy told me the sensor had gone but he had fitted a temp. However this does nothing and it continues to overheat just 5 minutes down the road. Sad

How can i replace this sensor?? Scratch one-s head

Where is it? I think it's underneath at the back of the fan as i can see a bypass of the 2 wires coming out which the guy had fitted as a "temp".

I really need help with this matter. I'm so gutted as i love my van and realy want to take it further than just down the road. Please help! If anyone can give ANY advice or has had the same problem and resolved it, this would be appreciated!! Help

Many thanks


HI to fill up the coolant are you just filling under the seat where the rad cap is.If so thats not the correct way,remove the front panel by unsrew the orange finger grip locks.These are situated near the pedals on drivers side and one on pass.Remove front panel this will show rad top with another cap.With both caps removed fill radiator until it overflows on engine,refit the eng cap first then continue to fill rad.Replace cap on rad then start engine,at the front where the panel fits you should see a small bleed hose for heater.This requires bleeding to remove all air from heater.Hope this helps Mick

Mick H

Hi there. Many thanks for

Hi there. Many thanks for your reply.
Right, I turned the engine on, opened the coolant reservoir cap and opened the radiator cap. Filled the radiator up with water but it did not overflow onto the engine via the reservoir, as you said it should, it just overflowed on the radiator as if there was some kind of "blockage" >Sad . I'm really not sure what this means. In my opening question i mentioned about a sensor. Do you know anything about this also? I'm really stuck!! Help please


hia mate if you lift the pas,seat up and remove the cap allso the rad,cap. if you can blow into the cap under the pass,seat and if its not blocked you should be able too blow through the system. or remove a pipe an blow through that.have you herd any bublin sound in ya overflow tank? have your head gascate checked. allso is the pipes gettin hard wen its up to tempeture if they arnt replace caps. let me know the results mate


what next?

Ok I opened both rad cap and coolant reservoir cap situated under the pass seat. I then took pipe out of coolant reservoir cap and blew into it....nothing.....then i loosened the pressure valve cap and when I blew, it kind of pushed a little bit of water from the valve and that was pretty much it. I haven't taken it out for a drive in a few days so don't know if this has made much of a defference but i hardly doubt it.....? SadCray 2

sounds like that something

sounds like that something is blocked mate. try takin it 4 a run without the rad cap on and see how that gos. 1 thing wen it gets hot is the radeater hot top an bottom? let me know


overheating hijet

hi cake, ive just replaced complete top end gaskets, as had warped head, i machined head and block , bled, (i think corrctly, still overheats yet little rad temp to speak of! im not happy to say the least, any ideas Unknw could it be the temp sensor not doin its thang? if its the one i saw with big brass nutn near pass side front of expansion tank) please advise , cheers nic Cray 2 >SadHelpSmile