Vauxhall Owners Network Forum banner

1 - 8 of 8 Posts

·
Registered
Joined
·
4 Posts
Discussion Starter #1
I keep getting error codes 4 and 89. Temperature gauge shoots up and irregularly. Getting an acrid smell of either molten plastic or hot coolant in car cabin. Any thoughts?
 

·
Well-known member
Joined
·
14,802 Posts
On what car?
 

·
Super Moderator
Joined
·
27,538 Posts
What engine is in the car ?
How’s the coolant level ?
 

·
Registered
Joined
·
126 Posts
Drinks or loosing - the latter is much cheaper.
Temperature woes - first to check would be the wiring of the temp. sensors around the thermostat. Readings when it opens - if at all, if not then replacement. If the thermostat is not opening then the coolant gets over-pressurised and thrown away by the valve in the overflow tank cap - check if there are marks/wet.
Check for leaks around/under the water pump.
 

·
Super Moderator
Joined
·
27,538 Posts
First off be careful , modern engines only have the minimum coolant quantity these days , no excess reserve. This is to keep the C02 levels down , but creates another problem in modern engines which can overheat very quickly & damage the head gasket as a consequence.
So if it’s overheating badly your not doing the engine any favours , is there coolant coming out the expansion overflow pipe ? If so it could be the cap needs replacing with a new one.
You could have a faulty water pump , if you’d lost about half your coolant the air coming out of the vents would be cold.
 
1 - 8 of 8 Posts
Top