If it's not one thing It's another

**sincitycj** · 10-26-2010, 22:45

So after getting rid of the banging noise, now the damn thing is running hot again. I was headed to work this morning when I noticed the temp gauge was up to about 195, which doesn't sound bad except for the fact is was only about 50 outside and I only drive about 8 miles to work. On the way home the gauge started creeping toward 210 whenever I got stuck at a red light. As long as I was moving the temp stayed around 190ish. I'm thinking it's either my fans aren't pulling enough air in, which will really piss me off since I just changed them about 4 months ago, or my water pump is taking a shit. Everything else, rad, t-stat is less than 3 month old. AHHHHHH I guess I'll pick up a water pump and se what happens. Any other idea in case this doesn't work?

**airforce26yrs** · 10-26-2010, 22:51

Check your fans first. When you changed the rad did you do a flush of the engine?

**sincitycj** · 10-26-2010, 22:54

Originally Posted by airforce26yrs

Check your fans first. When you changed the rad did you do a flush of the engine?

Both fans are running, unfortunately I have no way to test cfm. Engine was flushed, I'll probably flush it again just in case. I'm not seeing much movement in the rad when the engine is running so I'm leaning toward water pump.

**airforce26yrs** · 10-27-2010, 08:27

water pump can't hurt and they are cheap and not too hard to change.

**Navydoc8778** · 10-27-2010, 13:11

Sounds like my last 3 or 4 water pumps. Are your fans electric or engine driven?

**sincitycj** · 10-27-2010, 14:38

Originally Posted by Navydoc8778

Sounds like my last 3 or 4 water pumps. Are your fans electric or engine driven?

The fans are electric.

**Navydoc8778** · 10-27-2010, 17:47

I would lean towards pump then.

**warrior** · 10-27-2010, 20:34

What size T-stat you put on??
Remember a 190 Deg stat your gauge might show 200 Deg before the stat opens.
Also the engine reach high temp withing 30 minutes running( You drove 8 miles)
210 is normal temp.( Is needed for a good combustion if you have fuel injection)

**sincitycj** · 10-27-2010, 22:39

Originally Posted by warrior

What size T-stat you put on??
Remember a 190 Deg stat your gauge might show 200 Deg before the stat opens.
Also the engine reach high temp withing 30 minutes running( You drove 8 miles)
210 is normal temp.( Is needed for a good combustion if you have fuel injection)

I'm running a 180 t-stat and I'm carbed, I wish I had FI. I didn't worry about 210 in the summer when it was 115 outside. From what I've read it's pretty normal on the CJs. But when it went to 210 and a bit above when it was only 70 or so, I began to wonder.