why when my zed is up to temp, that when i put foot down the temp gauge goes down to cold (not all the way down though) then goes back up again

Sounds abit like the thermostat bud!

 

http://www.300zx.co.uk/cgi-bin/manual.cgi?list=lc&dir=&config=&refresh=&slide=11&cycle=off&scale=0&design=default&total=15

 

Just incase you need to find it! ;)

Sounds abit like the thermostat bud!

 

http://www.300zx.co.uk/cgi-bin/manual.cgi?list=lc&dir=&config=&refresh=&slide=11&cycle=off&scale=0&design=default&total=15

 

Just incase you need to find it! ;)

 

Nope - it's just the black dial connector is not making good contact.

 

Open the bonnet, locate the yellow water temp sender on the upper radiator pipe. Next to it is a little black sender (this links to the dash gauge). Pull it off, clean the contact with contact spray and push it back on until it sits firmly. I've seen some people using tie-wraps to hold it in position. Job done.

 

The reason for the dash gauge going up and down as you accellerate/decellerate is due to the big fan pushing air against the sender. If this isn't "seated" properly it will move and the contact area will vary - hence the gauge moving up and down.

 

Hope this helps!

 

Dan

Nope - it's just the black dial connector is not making good contact.

 

Open the bonnet, locate the yellow water temp sender on the upper radiator pipe. Next to it is a little black sender (this links to the dash gauge). Pull it off, clean the contact with contact spray and push it back on until it sits firmly. I've seen some people using tie-wraps to hold it in position. Job done.

 

The reason for the dash gauge going up and down as you accellerate/decellerate is due to the big fan pushing air against the sender. If this isn't "seated" properly it will move and the contact area will vary - hence the gauge moving up and down.

 

Hope this helps!

 

Dan

 

spot on,same as mac300zx he had same problem,and its due to loose/dirty connection