87 4.0 temp guage question.

D

dyna

NAXJA Forum User

Location

central coast Ca

• Aug 15, 2007

• #1

Best I recall in the 2 newer XJ`s Ive had the temp guage ran pretty close to 200/205ish with a 195 thermo. I just serviced the cooling system in this 87 and a new 195 thermo but the guage still shows half way between 210 and 100 which looks like 170 maybe. I think my 85`s was off also but cant recall?
Is this normal moreless?
Thanks.

 

J

Jess

NAXJA Forum User

Location

Tennessee

• Aug 15, 2007

• #2

that is the way my 89 ran all winter and didn't have very good heat. I never did find the problem, but I would rather it run too cold than too hot.

Normally it would be a thermostat stuck open, but in my case everything was properly functioning and it was still too cool......but you should replace the thermo just to be sure.

 

D

dyna

NAXJA Forum User

Location

central coast Ca

• Aug 15, 2007

• #3

I just replaced it and the old one was also an 195, I was thinking it might have been running in open loop if the early ones even do this?

 

M

Mike1331

NAXJA Forum User

Location

Folsom, CA

• Aug 15, 2007

• #4

My 87 does this as well

 

87manche

NAXJA Forum User

Location

Ohio

• Aug 15, 2007

• #5

my 87 has been through three thermostats in 18 months, a temp sender, and numerous other things because it wants to run there.

I've given up, I block off the radiator in the winter to get it at the right temp.

 

D

dyna

NAXJA Forum User

Location

central coast Ca

• Aug 15, 2007

• #6

Ill take one of our infared temp sensors and shoot the area by the thermo and the sending unit in back and post my findings. I cant see the same engine running that much cooler than the others I had that ran right at 205 with a 195 thermo. Im thinking guage/electrical differences for some reason.