06 STi Temperature Issue
#1
Scooby Newbie
Thread Starter
Join Date: Aug 2014
Location: Hertfordshire
Posts: 10
Likes: 0
Received 0 Likes
on
0 Posts
06 STi Temperature Issue
Before I even begin to type up the actual issue, I just want to make it clear, that it 100% not a head gasket! I've had every test and nothing..
So, my car can drive absolutely fine - has done all week (par wednesday), but occasionally (3/5 times in the last 2 weeks) the temperature can rise right up - not all the way to red, but it gets above the second line. At which point, I quickly flip the ignition and the fans kick in.
Today, I fit a new temp sensor along with a new thermostat. I found the existing thermostat seal had snapped (not the housing one, the spring side) and believed that was the problem, as it could hold the thermostat open.
Started it up, fine held temp. Then it rose up to the second line (normally sits mid way) and held that temperature relatively stable the entire test drive. I gave it a boot then cruised/ even stopped to let it idle expecting to see the temp rise up, but it didn't really go up a lot.
When I got back 5 mins ago - it appears that the fans still aren't coming on when they should be.
I've already checked the entire fan system and nothing appeared to be wrong there. I'm now thinking it's to do with the ECU, am I right in thinking this?? It's the only thing I can see is the issue. Obviously the ECU is the centre part of the system that regulates and tells the fans when to come on.
Worth noting that I have an aluminium rad.
Also, the fans - they are 2 speed, 2 wires for each speed?
So, my car can drive absolutely fine - has done all week (par wednesday), but occasionally (3/5 times in the last 2 weeks) the temperature can rise right up - not all the way to red, but it gets above the second line. At which point, I quickly flip the ignition and the fans kick in.
Today, I fit a new temp sensor along with a new thermostat. I found the existing thermostat seal had snapped (not the housing one, the spring side) and believed that was the problem, as it could hold the thermostat open.
Started it up, fine held temp. Then it rose up to the second line (normally sits mid way) and held that temperature relatively stable the entire test drive. I gave it a boot then cruised/ even stopped to let it idle expecting to see the temp rise up, but it didn't really go up a lot.
When I got back 5 mins ago - it appears that the fans still aren't coming on when they should be.
I've already checked the entire fan system and nothing appeared to be wrong there. I'm now thinking it's to do with the ECU, am I right in thinking this?? It's the only thing I can see is the issue. Obviously the ECU is the centre part of the system that regulates and tells the fans when to come on.
Worth noting that I have an aluminium rad.
Also, the fans - they are 2 speed, 2 wires for each speed?
#3
Scooby Newbie
Thread Starter
Join Date: Aug 2014
Location: Hertfordshire
Posts: 10
Likes: 0
Received 0 Likes
on
0 Posts
Yeah, I've changed the rad caps too! I thought the ECU idea wasn't the answer, but it's the only thing between the instrumentation and the actual temperature.
I'm going to try burp the system again, but I'm very confused as of now.
I'm going to try burp the system again, but I'm very confused as of now.
#7
Scooby Regular
iTrader: (1)
Before I even begin to type up the actual issue, I just want to make it clear, that it 100% not a head gasket! I've had every test and nothing..
So, my car can drive absolutely fine - has done all week (par wednesday), but occasionally (3/5 times in the last 2 weeks) the temperature can rise right up - not all the way to red, but it gets above the second line. At which point, I quickly flip the ignition and the fans kick in.
Today, I fit a new temp sensor along with a new thermostat. I found the existing thermostat seal had snapped (not the housing one, the spring side) and believed that was the problem, as it could hold the thermostat open.
Started it up, fine held temp. Then it rose up to the second line (normally sits mid way) and held that temperature relatively stable the entire test drive. I gave it a boot then cruised/ even stopped to let it idle expecting to see the temp rise up, but it didn't really go up a lot.
When I got back 5 mins ago - it appears that the fans still aren't coming on when they should be.
I've already checked the entire fan system and nothing appeared to be wrong there. I'm now thinking it's to do with the ECU, am I right in thinking this?? It's the only thing I can see is the issue. Obviously the ECU is the centre part of the system that regulates and tells the fans when to come on.
Worth noting that I have an aluminium rad.
Also, the fans - they are 2 speed, 2 wires for each speed?
So, my car can drive absolutely fine - has done all week (par wednesday), but occasionally (3/5 times in the last 2 weeks) the temperature can rise right up - not all the way to red, but it gets above the second line. At which point, I quickly flip the ignition and the fans kick in.
Today, I fit a new temp sensor along with a new thermostat. I found the existing thermostat seal had snapped (not the housing one, the spring side) and believed that was the problem, as it could hold the thermostat open.
Started it up, fine held temp. Then it rose up to the second line (normally sits mid way) and held that temperature relatively stable the entire test drive. I gave it a boot then cruised/ even stopped to let it idle expecting to see the temp rise up, but it didn't really go up a lot.
When I got back 5 mins ago - it appears that the fans still aren't coming on when they should be.
I've already checked the entire fan system and nothing appeared to be wrong there. I'm now thinking it's to do with the ECU, am I right in thinking this?? It's the only thing I can see is the issue. Obviously the ECU is the centre part of the system that regulates and tells the fans when to come on.
Worth noting that I have an aluminium rad.
Also, the fans - they are 2 speed, 2 wires for each speed?
Any coolant loss ??
Mick
Trending Topics
#8
Scooby Newbie
Thread Starter
Join Date: Aug 2014
Location: Hertfordshire
Posts: 10
Likes: 0
Received 0 Likes
on
0 Posts
Thread
Thread Starter
Forum
Replies
Last Post
Mattybr5@MB Developments
Car Parts For Sale
1
18 November 2015 07:49 AM