Corsa-B.uk - Vauxhall, Opel and Holden Corsa B Owners Club

Hi Y'all
Deos anyone know where the Engine Tempreture Sensor location is on a C15NZ (thats a 1.4 8v.
I also need to know where a Tempreture Switch (with the single wire) is also located.
Could you please give a real acurate discription as I'm abit new to this repair lark - Can't ya tell?
Cheers.

I think you mean C14NZ no such thing as a C15NZ.

Coolant temperature sensor for the ECU is at the back of the inlet manifold on the left hand side as you look at the engine, its abit difficult to get too or even see beacuae its around the back I think it has a blue multiplug that clips into it with two wires. Its prbably easiest to loosen up the alternator and tilt it forward so you have some room to get at the sensor.
The temperature sensor for the readout on the dash is also on the inlet manifold but is much easier to access also on the left hand side but on the top you can see it straight away it has a single black wire coming from it.
There is a temperature switch on the radiator that switches the fan on and off thats right at the bottom of the radiator on the left, cars with aircon have two of these.

Hope this helps, what is your problem? what are you trying to fix?

Hi,
Thanks very much for that info.
As the corsa b engine-bays are cramed, its going to take me alittle while to find everything.
Oh, and yeh your right about the engine number too.
Many thanks, Red Bullet.

Sorry, I didnt read your last line.

The engine sometimes cuts out and wont start for half an hour to an hour.
I think it needs to cool right down.

First of all I thought it might be the (usual) crank sensor switch but Ive been told that the early C14NZ has'nt got one.

Do you think Im heading in the right direction?

Cheers.

Your right to think the temp sensor as that will affect the starting of the engine when, hot in that case its the first sensor i mentioned that will be faulty, the single wire one only operates the temp guage and won't affect anything if it doesn't work.

Crank sensors can cause similar problems and no the C14NZ doesn't have one but the X14SZ is an almost identical engine and does have one. The engine code will be stamped into the side of the engine so its worth checking that it is an C14NZ that you have.

If I have time tomorow I will post a picture of the temp sensor to help you find it.

I have been having a similar problem to this but the engine starts ok.
After driving a couple of miles it starts to feel like it wants to cut out.
Usually just before this the ECU light comes up on the dashboard.
A few times i've stopped at a roundabout and then as i've gone to pull away the engine has cut out and its taken a few attempts to restart. One of my mates who used to have a Corsa said he had a similar problem and it was the engine temperature sensor.
I've got a new sensor now but couldn't see where the sensor location was.
Loads of forums seem to have people reporting the problem but no actual pictures of where it is.
I'd been told it's near the air filter on the left hand side and is obscured by the pipe running from the filter to the engine.
I took the top of the air filter off and couldn't see anything that resembled the new part i had bought?

Have you tried checking for ECU fault codes?
read this if you havent:
http://forums.corsa-b.co.uk/viewtopic.php?f=105&t=11231
Your problem is almost certainly the temp sensor but it worth checking the fault codes that there isn't another fault.

The temp sensor is in a very difficult place to take a photo of without removing alot from the engine.

The sensor is on the left hand side of the inlet manifold but its around the back which makes it difficult to get to and see.
You will need to remove the airbox then you should be able to get your hands and a spanner around the back to it.
Taking the alternator off gives you access from the side and is much easier but then you have the hassle of taking the alternator off.

haydn1987 wrote:Have you tried checking for ECU fault codes?
read this if you havent:
http://forums.corsa-b.co.uk/viewtopic.php?f=105&t=11231
Your problem is almost certainly the temp sensor but it worth checking the fault codes that there isn't another fault.

The temp sensor is in a very difficult place to take a photo of without removing alot from the engine.

The sensor is on the left hand side of the inlet manifold but its around the back which makes it difficult to get to and see.
You will need to remove the airbox then you should be able to get your hands and a spanner around the back to it.
Taking the alternator off gives you access from the side and is much easier but then you have the hassle of taking the alternator off.

Cheers for the help.
Had a look over the weekend and managed to find the location.....it is indeed in a really cramped place.
However have now encountered another problem.
I bought the part which was apparently for my car but it has a kind of oval plug end.
When we finally got the sensor out it was a square ended plug so it doesn't fit. My mate ended up cleaning the end of the sensor and re-setting the ECU. Tested the car out after this and it was driving like a dream. No sign of the ECU light or anything. Drove round for about 30 mins then let it sit whilst at his house. Then drove home, which is about 8 miles away.

Had a look on the site where i bought the sensor from and after some searching they do have a one with a square plug end although it never appears when you put all your car details in. Only appears by searching for coolant temperature sensors.
So i now have to get the right part and try it out.

Found out that one of my other mates has Corsa diagnostic kit so will be putting that on there later in the week as the ECU light came on several times on the way to work this morning although there was no repeat of it trying to cut out.

Hi there,

I found this thread by googling. My wife's car (Corsa Merit 1.4 Auto C14NZ engine) has the same symptoms i.e. starts and runs fine from cold then cuts out/stalls when it gets warm. It isn't overheating - the rad fan hasn't even kicked in yet. I recently did a service overhaul and replaced plugs, HT leads, dissy cap, rotor arm, oil & filter, air filter. I also drained and replaced the coolant, replaced the fan temp switch and the ECU coolant temp sensor and this has not fixed the problem. The only thing different you say you have done is reset the ECU. What do you actually mean by this? Did you just reset the fault codes (I never managed to pull any incidentally)?

Does anyone have any ideas of what else could be causing this.

Many Thanks

Jugganaut

please check the FAQ as we have that guide for the paperclip test and fault codes right here!

http://forums.corsa-b.co.uk/viewtopic.php?f=105&t=11231

I know this is a really old post but I finally sorted this by replacing the dissy. Presume there was something in there that was failing at high temps (do these cars use a Hall effect sensor in the dissy)?