my c-4
Thread Starter
8th Gear
Joined: Aug 2014
Posts: 8
Likes: 0
From: Columbus Ohio
my c-4
Greetings
I have several questions but the most pressing t this time is "low voltage coolant sensor" according to the nifty ecm code reader i purchased to resolve a service engine soon light constantly on this is the code i get ? of course i tried to unplug the one in the block it didn't work and the one in the radiator haven't quite figured out how to get it out yet.
Help !!!!
I have several questions but the most pressing t this time is "low voltage coolant sensor" according to the nifty ecm code reader i purchased to resolve a service engine soon light constantly on this is the code i get ? of course i tried to unplug the one in the block it didn't work and the one in the radiator haven't quite figured out how to get it out yet.
Help !!!!
Melting Slicks
Joined: Jan 2009
Posts: 3,181
Likes: 286
From: Puyallup Washington
Since the C4 was made for 13 years with 5 different engine versions and at least 4 different transmissions and many electrical and sensor changes the first information needed is the year of the car.
What number code did the code reader give?
What number code did the code reader give?
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
The most likely source of your problem is the CTS (Coolant Temperature Sensor) on the front of the intake manifold under the throttle body. The wiring and connector pins are also suspects.
The CTS in the head is or the temperature gauge in the dash cluster.
The sensor in the radiator is the low coolant sensor. It is used with the low coolant module to turn on the LOW COOLANT light.
The CTS in the head is or the temperature gauge in the dash cluster.
The sensor in the radiator is the low coolant sensor. It is used with the low coolant module to turn on the LOW COOLANT light.
Thread Starter
8th Gear
Joined: Aug 2014
Posts: 8
Likes: 0
From: Columbus Ohio
Thread Starter
8th Gear
Joined: Aug 2014
Posts: 8
Likes: 0
From: Columbus Ohio
The most likely source of your problem is the CTS (Coolant Temperature Sensor) on the front of the intake manifold under the throttle body. The wiring and connector pins are also suspects.
The CTS in the head is or the temperature gauge in the dash cluster.
The sensor in the radiator is the low coolant sensor. It is used with the low coolant module to turn on the LOW COOLANT light.
The CTS in the head is or the temperature gauge in the dash cluster.
The sensor in the radiator is the low coolant sensor. It is used with the low coolant module to turn on the LOW COOLANT light.
Team Owner
Joined: Sep 2003
Posts: 25,393
Likes: 2,741
You do NOT need to tear apart the throttle body BUT you still haven't mentioned the year. Your image indicates '90 or earlier. It's going to be much easier acquiring help if you mention "the YEAR". You might consider adding it as well as your location to your profile. Code 15 certainly hints CTS for ECM.
Thread Starter
8th Gear
Joined: Aug 2014
Posts: 8
Likes: 0
From: Columbus Ohio
You do NOT need to tear apart the throttle body BUT you still haven't mentioned the year. Your image indicates '90 or earlier. It's going to be much easier acquiring help if you mention "the YEAR". You might consider adding it as well as your location to your profile. Code 15 certainly hints CTS for ECM.
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
The CTS is the one on the right (cold start injector thermal switch on the left):
Just for clarification, since the pic is a little close, the hose above the CTS is the one that goes to the bottom of the throttle body.
Just for clarification, since the pic is a little close, the hose above the CTS is the one that goes to the bottom of the throttle body.
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Thread Starter
8th Gear
Joined: Aug 2014
Posts: 8
Likes: 0
From: Columbus Ohio
Thread Starter
8th Gear
Joined: Aug 2014
Posts: 8
Likes: 0
From: Columbus Ohio
Greetings people once again I come to you with a minor problem does anyone know where I can buy the a/c heat control module for my c4 ? it works but ya kinda have to whack it every now and then to keep the lights lit and when you turn the headlights on for get it lights are out but the a/c still works. Very annoying