Dando Posted October 11, 2014 Posted October 11, 2014 I swapped my 90 4.0 for a 95 4.0 kept the renix system. Now my gauge (I used the renix gauge sender) reads high but my coolant doesn't boil etc. Used an IR thermometer and got a lower reading I was aimed at the rear of the head. Engine had been running around town for about 45mins prior to these photos. Which do I trust and is there any way to test the gauge sender?
ScottJeep Posted October 12, 2014 Posted October 12, 2014 My recent problem similar to this ended up being the cheap $6 temp sending unit I installed. Located on the back of the head near the firewall on my 89' with the 4.0L Good Luck.
ParadiseMJ Posted October 14, 2014 Posted October 14, 2014 Did you put teflon tape or thread sealer on the sender when you screwed it in?
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now