23-07-2014, 08:26 AM
I have a temperature/fan problem with my 1999 Peugeot 306 1.6 (with AC)
I am currently stuck, so i could really need some inputs!
The problem:
-The temperature gets to hot. 100-110c
-Driving up a hill makes the temp rise and goes slightly into the red.
-Unplugging the fan coolant sensor so both fans operate at full speed does not help
-If i open the bleeding screw on the hose to the bulk head i get a steady stream of water that follows the revs. (Rules out waterpump???)
-I get a steady flow of hot air from the heater.
-I do not lose any coolant
The low speed fan that should kick in at 97c does not kick in before temp gauge shows appr. 105-107c
High speed fan should kick in at 107,c but it does not engage.
What i have done:
-Changed thermostat=no difference
-Changed radiator + coolant= no difference
-Changed temp sender to gauge and temp sender to fan ECU= no diffence
-New earth cable from gearbox and battery= no difference
-Cleaned cable connection the the fans=no difference
-Tryed another (used) fan controll unit ECU (Bitron) = no difference
I hav also meassured the signals to and from the Bitron unit, and everything works.
Earth pin 1= both fans on slow speed
Pin 4 = permanent 12v
Pin 15 = switched 12v
Ignition to ACC and earth pin 10 and 1 = both fans on high speed
Resistance pin 7 and 14 = cold engine around 1,9ohm. Hot engine around 3,5 ohm (confirms good temp sensor also)
I am currently stuck, so i could really need some inputs!
The problem:
-The temperature gets to hot. 100-110c
-Driving up a hill makes the temp rise and goes slightly into the red.
-Unplugging the fan coolant sensor so both fans operate at full speed does not help
-If i open the bleeding screw on the hose to the bulk head i get a steady stream of water that follows the revs. (Rules out waterpump???)
-I get a steady flow of hot air from the heater.
-I do not lose any coolant
The low speed fan that should kick in at 97c does not kick in before temp gauge shows appr. 105-107c
High speed fan should kick in at 107,c but it does not engage.
What i have done:
-Changed thermostat=no difference
-Changed radiator + coolant= no difference
-Changed temp sender to gauge and temp sender to fan ECU= no diffence
-New earth cable from gearbox and battery= no difference
-Cleaned cable connection the the fans=no difference
-Tryed another (used) fan controll unit ECU (Bitron) = no difference
I hav also meassured the signals to and from the Bitron unit, and everything works.
Earth pin 1= both fans on slow speed
Pin 4 = permanent 12v
Pin 15 = switched 12v
Ignition to ACC and earth pin 10 and 1 = both fans on high speed
Resistance pin 7 and 14 = cold engine around 1,9ohm. Hot engine around 3,5 ohm (confirms good temp sensor also)