Still overheating

BennittoMallito · Sep 9th, 2003, 04:35 AM

Well I went on a nice camping trip this weekend. Went fine except for the end on the way up. It was about 300km but the last 12km was on a pretty nasty dirt road. The San took it like a champ until the end.
I went through a little puddle, and into first gear to go up a small rise, and at about 16-1800 rpm I heard ping-ping-ping.

My fans don't kick on properly still, (only goes on for like ten second bursts) and wouldn't keep the heat down. The needle was only at like 3/4, so I was very surprised. I shut down, and we walked the last half kilometer, and I went back for it later.

The mechanic said today there's nothing he can do, except relay a switch so I can manually turn on the fan myself. He won't put another fan in the space for AC equipped cars, says that won't help. What will work?
I have basically replaced everything in the cooling system brand new, and the new engine only has 1200km on it. The hard cooling pipe on the back is still leaking a bit by the bung for the heater core. It is full of corrosion. Could this be causing my problems?

Here's my other thread on this subject :
http://www.nissanforums.com/showthre...heating+issues

Stumped, thanks for any input, b

Crazy-Mart · Sep 9th, 2003, 11:40 AM

sludge build up inside the rad ?? can cause temps switch to malfonction ... are you sure the gage is working propêrly ?? radiator isnt corroded right ??

BennittoMallito · Sep 10th, 2003, 04:19 AM

Here's the story. They cut the upper coolant hose when they put my engine back together, so it was too short, and it got a tear right at the band clamp near the thermostat. Started leaking/sucking in air.
The corrosion comes from the hard coolant pipe on the back of the block, which is totally shot. It also leaks/takes in air from the bung to the heater core on the same hard pipe. The system is not pressurizing enough to set off the fan switch, after a few hours due to coolant loss.
The radiator is beautiful, and new so that's not it. Sorry I wasn't clear the sludge is in the rad. cap and comes from the hard pipe I keep referring to.
I have no time to wrench between my thesis, and the swell, there's no daylight left for the car. They will make a new system of pipes for me today, and I will hopefully be on the road to catch some waves while the tide is still pushing.
thanks bro, peace b

WhiteFox · Sep 10th, 2003, 05:19 AM

Grit your teeth and keep the heater running and windows down

Seriously though, my 87 overheats and that's about the only way it can lead a normal life..