Was driving along this afternoon in the Z'ed after filling up with petrol and all of a sudden the temp guage went from it's normal sitting at half way position to rising near the top of the H on the internal gauge!!! :mad:

 

Soon as I saw this I imeadietly pulled over and waited for things to cool down, thinking I had a water leak somewhere.. Wasn't kaning the car it was just under normal driving so I called my mate out who kindly came along with some water to fill the rad up just incase I had a leak...

 

On opening the rad cap I found that it only needed a little water just to top it up so couldn't really understand why the temp gauge should suddenly rise like that from just under midway to very near the H mark!!! Drove back home which was another 8miles away and the car behaved itself with the temp gauage sitting in the normal position..

 

Is it possible my thermostat stayed shut???? Have had the reverse problem at the begining of the week when the car would take longer to warm up than normal!!! Is it a bugger to change the thermostat on a Z'ed???!!! Thanks for any help!!! :bow:

sounds like its possible,either that or you have a massive air lock!

 

thermostat removal is fairly straight forward

 

 

http://www.ttzd.com/tech/60ktech.html

 

just follow thermostat removal

sounds indeed like the thermostat is on it's way out or you have a very large airlock in the system.

 

replacement of the thermostat requires removal of the radiator/rad.hoses/fan+clutch and lower alloy waterpipe

sounds indeed like the thermostat is on it's way out or you have a very large airlock in the system.

 

replacement of the thermostat requires removal of the radiator/rad.hoses/fan+clutch and lower alloy waterpipe

 

 

I do it with the radiator still in. just gives you less room to remove the fan.

I do it with the radiator still in. just gives you less room to remove the fan.

 

remove thermostat with radiator in?

Should be ok with getting to it as don't have the viscous fan anymore, got a nice big kenlow electric fan attached to the rad which is working well by the way so that's not the problem!!! Thanks for replying back everyone!!

check the sender and cable just in case could have been a false reading.

 

Jeff TT

Yep no need to remove the rad to get to the thermostat.

remove thermostat with radiator in?

 

 

Yes, you have to disconnect the pipes but the radiator can phisically stay in.

does it save much time doing that then? would have thought it would give a lot more room with it out for the sake of a couple of bolts???

 

 

oh, and sorry to hijack, but does anyone use nismo thermostats??? do they make any difference to the temp - or are they just for the big power boys?

oh, and sorry to hijack, but does anyone use nismo thermostats??? do they make any difference to the temp - or are they just for the big power boys?

 

I nearly put one in mine but decided against it because I found out they can give cold runing problems.

Yep no need to remove the rad to get to the thermostat.

 

 

fair enough still rather remove radiator,so when you put alloy pipe on half the sealent doesnt end up all over the place

If you're running ugrated turbos, Its advisable to get nismo thermostats - just what I read somewhere

If you're running ugrated turbos, Its advisable to get nismo thermostats - just what I read somewhere

 

 

rubbish

check the sender and cable just in case could have been a false reading.

 

Jeff TT

Totally agree....

The connector plug can cause this problem...pull it off...clean it...and check it has a good tight grip of the spade terminal...I know a bloke on here who had to solder his connection on because it was so poop..lol

Unless its overheating and spewing out Id be inclined to check the connection before doing anything else ;)

just an idea..as mine did it :rofl:

Totally agree....

The connector plug can cause this problem...pull it off...clean it...and check it has a good tight grip of the spade terminal...I know a bloke on here who had to solder his connection on because it was so poop..lol

Unless its overheating and spewing out Id be inclined to check the connection before doing anything else ;)

just an idea..as mine did it :rofl:

 

 

It's was really intermittent today, it may not be warming up to midway temp right away from cold like it used to cause I got better air flow going through the whole rad now as the old viscous fan sheroud has now been removed.

 

If i nail it then the temp guage will soon go up to it's normal positon. After driving hard and letting the engine idle awhile to let the tubs cool, the kenlowe fan will kick in and do it's thing and the temp needle will stay at the half way mark - normal temp. If I then turn the engine off so the temp needle goes to C and turn the ignition straight back on again without the engine running the temp needle will only be between the C and the half way mark!!! I'm bloody confused!!! :confused: Don't wanna get a new thermostat if mine is OK, but couldn't check temp connector today as it Pisssed it down all day!!! :headvswal