[kaizer_soze]

Hello all

I have a friend with a local shop that I some times help with diagnostics (but not programming/coding).
A client brought a 207 CC bought new 2008 1.6 120 hp.
He had a problem with the cooling fan, that the high speed fan is activated early, works for 10 minutes or so when the car is idle and then deactivated. After some short time cycle runs again even when car is idling and weather is not hot. Also there is vibration during the activation of high speed fan and shop people say that during this period engine doesn't show to work very well
Before he goes to the shop he went to local dealership where he was advised to change all engine and ECU....

So we started our try, we have Diagbox 5.16 for diagnosis.
- We noticed that the 1st fan is activated at 89C and high speed fan at 94C (Should we expect 100C+) ?
- When the temp drops at 90C after some minutes it stops the high speed (but the cycle goes for ever)
- Checking the ECU during the activation of high speed fan it was showing on parameters that was giving command for Speed "1" (is this the low?)
- We think that temperatures from sensors seem reasonable as they read on DiagBox
- We changed the thermostat (with embedded sensor) and we have same behavior
- diag errors: BSI complains about oil sensor. After many diagnosis tries we had once P0694, which never happened again.
- We can activate with DiagBox thru ECU the fans and work as they should. We tried all activations and everything works properly.
- There is that "relay" on the fans with a circuit board (which is made by Omron p# 98372a) but we are not very sure if this is the problem
- All the checks from DiagBox for registors and various components showed they are OK (and the fans)

Is anyone capable of connecting to our PP and check the car?

[oiley]

If its any help these tend to run the cooling fan for all kinds of fault codes in the engine ecu I had one would run the fan for 10mins after switch of because the oil cap was loose and it set a map sensor code

[MARTINS AUTOMECH]

I think u need to reconfigure the engine ecu,to set the fan cut in and cut off timing to regulate the speed properly. but noting is wrong with the ecus and engine

---

because if the car if the car is bad it will over heat and show a stop light,but i blieve in this case it doesnt so if so then the fan regulator and the fan itslf is working at the confiqured intervals, because you said ''- We noticed that the 1st fan is activated at 89C and high speed fan at 94C (Should we expect 100C+) ?
- When the temp drops at 90C after some minutes it stops the high speed (but the cycle goes for ever)'' in this case i want to no something is the low speed fan usually start immediately when engine start, or do the low fan cut off after cooling to certain temp?