A
Anonymous
Guest
Hi all,
So like a good number of you on here, I have suffered the common engine temperature sensor problem. There is a lot of scattered information regarding this fault as the Z shares an engine platform with a few other cars; Mini's and DS3's etc. I thought I would collate it here to help anyone else suffering the same problems.
Symptoms
My symptoms were as follows:
- Engine temperature dial rises as normal
- Seemingly random spikes of max temperature, for short period before returning to normal anywhere from 1-10 seconds later. Temperature gauge immediately swings to max position, Temperature gauge warning light comes on, Warning message in dial cluster LCD, Warning message in centre console LCD
- After repeated occurrences of fault in short period, engine management light is triggered with "Engine Fault: Repair needed" message. This is accompanied by a P0117 error message in the ECU, which can be read with an ODB2 tool.
- After periods of good behavior, engine management light will clear.
- If fault occurs shortly before stopping, coolant fans run at max rpm for 30-60 seconds after engine is switched off.
Variants
There is seemingly a similar fault on both the THP156 and the THP200, despite the part in question actually being different. As yet I have no information on the 270bhp R model engine, but the other two are as follows:
THP156 - There is an external sensor, which plugs into the Coolant Outlet Housing(COH), retained by a spring clip. These can be bought on ebay for less than £10. I will try and detail the repair process for this later on. (I actually have one of these, bought in error, if anyone wants it let me know)
THP200 - This model does not have the external sensor, it is built into the COH, this means replacing the entire housing....or at least it did! Having spoken to my local Peugeot parts dealer last week, I was informed that there was a TSB(Technical Service Bulletin) for this model. It was explained that Peugeot had found a fault with this model and as such had issued a fix. Initially the guy was unwilling to hand over the info on this fix, but after a little persuasion and the suggestion that this was glorified racketeering he was good enough to print off a copy of this TSB for me. This document details the addition of a sensor assembly, which I think has been produced for exactly this reason. It is a much simpler process than replacing the complete COH and also cheaper. Peugeot offered this part at £46 inc VAT, better than the £77 for the complete COH. I however had a hunt around and found one on eBay for £25 delivered.
Repair
I have now fitted this part myself (THP200 version) according to their instructions and info from a workshop manual. It all went fine, taking about an hour and I have driven 500+ miles fault free! I took a load of pictures, which I am going to compose into a guide on how to do this job yourself, it really is dead easy! In short it consists of:
-Remove the air intake box
-Remove turbo pipe
-Remove air intake pipe
-Remove battery
-Remove bleed plug
-Fit sensor
-Refit removed items
I will try and get a full guide done asap!
So like a good number of you on here, I have suffered the common engine temperature sensor problem. There is a lot of scattered information regarding this fault as the Z shares an engine platform with a few other cars; Mini's and DS3's etc. I thought I would collate it here to help anyone else suffering the same problems.
Symptoms
My symptoms were as follows:
- Engine temperature dial rises as normal
- Seemingly random spikes of max temperature, for short period before returning to normal anywhere from 1-10 seconds later. Temperature gauge immediately swings to max position, Temperature gauge warning light comes on, Warning message in dial cluster LCD, Warning message in centre console LCD
- After repeated occurrences of fault in short period, engine management light is triggered with "Engine Fault: Repair needed" message. This is accompanied by a P0117 error message in the ECU, which can be read with an ODB2 tool.
- After periods of good behavior, engine management light will clear.
- If fault occurs shortly before stopping, coolant fans run at max rpm for 30-60 seconds after engine is switched off.
Variants
There is seemingly a similar fault on both the THP156 and the THP200, despite the part in question actually being different. As yet I have no information on the 270bhp R model engine, but the other two are as follows:
THP156 - There is an external sensor, which plugs into the Coolant Outlet Housing(COH), retained by a spring clip. These can be bought on ebay for less than £10. I will try and detail the repair process for this later on. (I actually have one of these, bought in error, if anyone wants it let me know)
THP200 - This model does not have the external sensor, it is built into the COH, this means replacing the entire housing....or at least it did! Having spoken to my local Peugeot parts dealer last week, I was informed that there was a TSB(Technical Service Bulletin) for this model. It was explained that Peugeot had found a fault with this model and as such had issued a fix. Initially the guy was unwilling to hand over the info on this fix, but after a little persuasion and the suggestion that this was glorified racketeering he was good enough to print off a copy of this TSB for me. This document details the addition of a sensor assembly, which I think has been produced for exactly this reason. It is a much simpler process than replacing the complete COH and also cheaper. Peugeot offered this part at £46 inc VAT, better than the £77 for the complete COH. I however had a hunt around and found one on eBay for £25 delivered.
Repair
I have now fitted this part myself (THP200 version) according to their instructions and info from a workshop manual. It all went fine, taking about an hour and I have driven 500+ miles fault free! I took a load of pictures, which I am going to compose into a guide on how to do this job yourself, it really is dead easy! In short it consists of:
-Remove the air intake box
-Remove turbo pipe
-Remove air intake pipe
-Remove battery
-Remove bleed plug
-Fit sensor
-Refit removed items
I will try and get a full guide done asap!