Computer/Thermostat Question
#1
Thread Starter
Registered
Joined: Sep 2011
Posts: 557
Likes: 4
From: Fox Island, WA
The 6.2 MPI s in my 29' Fountain Fever came with 160 degree thermostats. Will switching to 140 degree thermostats
cause the computer to think the engines are not at operating temperature and give an improper air/fuel ratio or
would the switch be ok?
cause the computer to think the engines are not at operating temperature and give an improper air/fuel ratio or
would the switch be ok?
#3
Banned
Joined: Jul 2011
Posts: 9,594
Likes: 45
From: Ft. Worth TX
Your ECM 555 is mapped accordingly to the original 160 degree t-stat. Your motor has the possibility of running rich with a lower T-stat temp. Coolant temp sensor and map sensor are main sensors that report back to the ECM for proper fuel deliveries.
Last edited by BUP; 07-27-2013 at 05:06 PM.
#4
Registered

Joined: Jun 2011
Posts: 1,209
Likes: 141
#5
Registered

Joined: Feb 2006
Posts: 519
Likes: 15




