Radiator fan stays on
12-22-2018, 02:07 AM
#1
Radiator fan stays on
Ok I need some help When I turn the car on the fan cut on when I turn the car off the fan stays on ...Plus my rev match doesn't work anymore..Has anyone experienced this ? Mods ECS,Alky and Headers
12-23-2018, 10:26 AM
#4
Melting Slicks
Member Since: Dec 2008
Location: Mount Airy NC
Posts: 2,073
Received 560 Likes
on
379 Posts
C7 of Year Finalist (performance mods) 2019
Very common when you disconnect the mass air sensor. One of your pins is not connecting. I took a silver sharpie and put a mark across the wires going into harness to make sure non of the pins pushed out while removing and reattaching harness. It’s a bitch to get back in line if they do push out...ask me how I know...lol
12-23-2018, 11:31 AM
#5
Got it!!!
Thanks fellas...I was about to replace the iat sensor so I disconnect the battery to clear the code once the code cleared everything went back to normal fan cut off and rev match started working again
09-19-2020, 07:12 PM
#6
Did you ever figure the cause of this? Mine just started and it's done it twice already. I'm tired of disconnecting the battery....
09-19-2020, 07:17 PM
#7
broken pins on maf sensor. Open the hood. Where maf sensor attaches in front of throttle body on air intake tubing. Pin side of harness had one pin broken
The following users liked this post:
Raf_cizarhandz (09-20-2020)
09-20-2020, 07:41 AM
#8
09-20-2020, 03:53 PM
#10
Race Director
Member Since: May 2004
Location: Raleigh, NC
Posts: 16,664
Received 1,194 Likes
on
1,053 Posts
St. Jude Donor '15
Check for pending codes. There are a few that can cause this. Coolant temp sensor or coolant temp not behaving normally. It’s basically not 100% sure the coolant temp reading is accurate so it goes wide open on the fan to cool it as much as possible as a sort of fail safe
(assuming it’s similar to c6’s, forgot I was in the c7 section)
(assuming it’s similar to c6’s, forgot I was in the c7 section)
Last edited by schpenxel; 09-20-2020 at 03:54 PM.