Temperature Stop Engine!!

[Dogtag]

Hi All I'm at a dead end, I replaced the thermostat as it was leaking coolant so I went all out and replaced new thermostat new water pump and pulley and coolant pipe to water pump, now after 3 seconds temperature goes high fan kicks in full speed, cleared fault codes and tried bsi reset, bled correctly now faults codes P023B and P023C Additional coolant pump, I checked the wiring as it says short to ground and short to B+ so I changed the turbo additional coolant pump and the friction pulley for the main pump, I have tried refitting the old stat back but still same fault STOP engine fan going nuts water pump won't engage when you leave running, codes come straight back rechecked wiring again can't find anything wrong, I'm in the process of getting another ecu to clone. I've now also ordered a genuine thermostat but my old one which was working now has the same fault showing additional pump but after this I might give up any ideas from anyone would be appreciated.

 

[neilgsxr69]

It sounds like you’ve missed something somewhere if the old thermostat housing is now doing the same it’s got to be something you’ve done maybe forgot a connector?

 

[Pedro]

P032B/C Knock sensor KS3, -Bank1 circuit low The water pump is electronicky clutch controlled & will only energise once a certain temp is reached by the ECU if their is a temp fault the fan is triggered straight away

 

[Dogtag]

It sounds like you’ve missed something somewhere if the old thermostat housing is now doing the same it’s got to be something you’ve done maybe forgot a connector?

Yeah I've gone through my steps back to make sure can't find anything unplugged.

 

[Dogtag]

P032B/C Knock sensor KS3, -Bank1 circuit low The water pump is electronicky clutch controlled & will only energise once a certain temp is reached by the ECU if their is a temp fault the fan is triggered straight away

Hi Pedro so iare these codes reporting a knock sensor issue? As 2 of my scanners report these as additional cooling pump?

 

[Pedro]

P032B/C is commonly associated with Knock sensor (KS3) failure but bear in mind a knock sensor can't distinguish between a pre detonation or other engine problems
Check the plug for the Knock sensor has not got wet from coolant?

 

[Dogtag]

P032B/C is commonly associated with Knock sensor (KS3) failure but bear in mind a knock sensor can't distinguish between a pre detonation or other engine problems
Check the plug for the Knock sensor has not got wet from coolant?

Thanks Pedro defibayely gonna check it out, I did remove the inlet manifold to fit the coolant pipe so could have got wet, I'll let you know if I find anything

 

[Dogtag]

Hi Pedro so iare these codes reporting a knock sensor issue? As 2 of my scanners report these as additional cooling pump?

Sorry posted wrong codes it was P023B and P023C

 

[Pedro]

Turbo pump control circuit high/low

 

[Dogtag]

Turbo pump control circuit high/low

I checked all the loom I even went as far as cutting the 3 wires from the ecu the the pump and rewired it and still comes up with fault I think ecu maybe next step.

 

[Pedro]

Maybe its the actual pump itself that is causing the fault ?

 

[Dogtag]

Maybe its the actual pump itself that is causing the fault ?

I have fitted a new pump already?

 

[tianorth]

Pedro wasn't the code p023b and c or have I missed something?

P032B/C is commonly associated with Knock sensor (KS3) failure but bear in mind a knock sensor can't distinguish between a pre detonation or other engine problems
Check the plug for the Knock sensor has not got wet from coolant?

Just seem post about listing wrong codes.

 

[Dogtag]

Pedro wasn't the code p023b and c or have I missed something?



Just seem post about listing wrong codes.

Yeah sorry me posting wrong codes been 3 weeks without my car now

 

[Pedro]

That code shows up as Turbo intercooler coolant pump circuit low?
There could be 2 possibilities of which
No1 is a chaffed control wire in the electrical connection so you have a open circuit?
No2 could mean the pumps openings may be obstructed causing the the electrical circuit to go out of range ?
You may ignore No1 if you fitted a new pump but I would be suspicious of a wiring fault somewhere which will undoubtedly trigger the EML

 

[Dogtag]

That code shows up as Turbo intercooler coolant pump circuit low?
There could be 2 possibilities of which
No1 is a chaffed control wire in the electrical connection so you have a open circuit?
No2 could mean the pumps openings may be obstructed causing the the electrical circuit to go out of range ?
You may ignore No1 if you fitted a new pump but I would be suspicious of a wiring fault somewhere which will undoubtedly trigger the EML

This is what I suspected but I actually rewired the 3 wires positive negative and signal straight from the new pump straight into the ecu and I cut the 3 wires from the old loom incase of and shorts to eliminate it completely still fault won't go I'm stumped thinking it can only be the ecu?

 

[Pedro]

The ECU will store any codes historically over time & these can be triggered by electrical or mechanical issues which can happen irrespective of where the actual fault is all I can suggest is the circuit is still damaged or possibly you have a grounding problem somewhere or as stupid as it sounds is the pump at fault?

 

[Dogtag]

The ECU will store any codes historically over time & these can be triggered by electrical or mechanical issues which can happen irrespective of where the actual fault is all I can suggest is the circuit is still damaged or possibly you have a grounding problem somewhere or as stupid as it sounds is the pump at fault?

So my next step is change the ecu then the engine wiring loom.

 

[Pedro]

You need to determine what is actually causing the fault You can get the ECU /BCM tested off the car as I have done on other people's cars but with a fault like yours its appearing hard to pin down I have heard people changing the loom on RCZ's for electrical faults but it begs the question why unless it was fried?
I would in your shoes find a decent auto electrician who can scan the cars systems to see if you have persistent grounding problems & also check how the ECU is functioning as its rare for the BCM & ECU to be the issue together unless as I found out on a Pug 207cc cabriolet they have been tampered with before & botched up until they start to throw up all sorts of issues

 

[Dogtag]

You need to determine what is actually causing the fault You can get the ECU /BCM tested off the car as I have done on other people's cars but with a fault like yours its appearing hard to pin down I have heard people changing the loom on RCZ's for electrical faults but it begs the question why unless it was fried?
I would in your shoes find a decent auto electrician who can scan the cars systems to see if you have persistent grounding problems & also check how the ECU is functioning as its rare for the BCM & ECU to be the issue together unless as I found out on a Pug 207cc cabriolet they have been tampered with before & botched up until they start to throw up all sorts of issues

So yes the ecu was messed about with before actually had the company's phone number on it when I rang they had found no fault with it in 2019, I've sent my ecu off now to get cloned if that doesn't solve it then I'll book in into my local Peugeot specialist