Chevy Cobalt Forum banner

Status
Not open for further replies.
1 - 4 of 4 Posts

·
Registered
Joined
·
1 Posts
Discussion Starter #1
PLEASE HELP ME I have a 2008 LS recently I noticed that all the issues was hitting with my heater core so I have by passed the heater core but now im noticing its getting as high at 235!!! the chevy dealership said the check engine will come on if its over heating my fans are kicking on but is it normal to run so high since I by passed heater core? :crying:
 

·
Super Moderator
Joined
·
11,821 Posts
Normal is 89°C (192°F).

Here are the specifications.
The ECM commands Low Speed Fans ON under the following conditions:

• Engine coolant temperature (ECT) exceeds approximately 106°C (223°F).

• A/C refrigerant pressure exceeds 1 310 kPa (190 psi).

• After the vehicle is shut off, the ECT at key-off is greater than 140°C (284°F) and system voltage is more than 12 volts. The fans will stay on for approximately 3 minutes.

The ECM commands High Speed Fans ON under the following conditions:

• ECT reaches 110°C (230°F).

• A/C refrigerant pressure exceeds 1 655 kPa (240 psi).

• When certain DTCs set
 

·
Say What again!
Joined
·
6,036 Posts
Perhaps there's an air bubble introduced when bypassing the heater core.
 
1 - 4 of 4 Posts
Status
Not open for further replies.
Top