audi 4000 running hot
#1
audi 4000 running hot
about a month ago i bought an 86 audi 4000s. It runs fine no problems. But it seems to run hot. About 3/4 of the way up. Occasionally it creeps a bit more then this and the temp light blinks on for a second.
The top hose is hot bottom is cool. I figured this meant thermosat. Changed the thermostat and I would say the new t-stat is not opening either. Still running hot.
Any tips?
The top hose is hot bottom is cool. I figured this meant thermosat. Changed the thermostat and I would say the new t-stat is not opening either. Still running hot.
Any tips?
#4
RE: audi 4000 running hot
The fans are also not kicking in properly. Right now I'm assuming the problem is the tstat. When I get that working if they're not running I'll check those sensors. Right now I've got them hard wired to run constant until I get this probelme figured out.
#5
RE: audi 4000 running hot
on my VW passat I had a problem, same engine, I bought a new stat but it didn't have a hole in it, so I had a huge air buble inside my engine.
I would recomend taking out thermostat out and cheking it. Sometimes even new is bad.
cheking:
thermostat + boiling water. opens good, doesn't bad. by puting it into water and boil the water at the same time.
I would recomend taking out thermostat out and cheking it. Sometimes even new is bad.
cheking:
thermostat + boiling water. opens good, doesn't bad. by puting it into water and boil the water at the same time.
#7
RE: audi 4000 running hot
pulled the thermostat out and bypassed it. Now it's running right. So I guess I have a defective new tstat. And it's the only one they had in stock.
By the way, it's a pain in the butt to change this tstat.
By the way, it's a pain in the butt to change this tstat.
#8
RE: audi 4000 running hot
It’s been a long time since I had my 4000. What temp is the stat? If you have one that is 80C or 88C drop in a pot of boiling water if it opens up it is not the stat but air trapped under the thermostat or the water pump. Check the manual there might be a special air bleeding procedure.
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