XJdude2000

ok so i put a new head on the jeep. and hooked every thing else up. ran it and had a crap load of coolant come out of the extra hole on the head. it is located in front of bolt #14 (or in front of the last bolt on the drivers side). i was wondering if any of you all have had this problem and what size bolt you put in there (an old head bolt is too big) to stop the coolant from leaking.... from what i can tell the hole is fine threaded.

asatxj

Got a pic? is it on top, at the rear next to the valve cover? If so it's for a temp sensor. early HO engines used a sensor in the tstat housing for the computer and one in the head for the gauge. I had to find a place for that sensor when I put a 97 engine in my 91. ended up putting it in a flat spot on the tstat housing.

98 JeepJeep

so later Ho's didnt have that sensor in the head? only the one in the Therm housing?

asatxj

97 on use the one in the tstat housing for both.

XJdude2000

ok then i went to the parts store and the one they had was too big..... soo size of the bolt????? would be what?

mike37

you need a plug
it should be a pipe thread
1/4np
or 3/8np

mike37

ok I just looked a the one on my jeep and it 1/8 np
1/8 pipe plug
parts house or hardware store will have one

mike37

did you get it fixed

okcjeeper

If you can't find a bolt just go to a parts house and get a sender for say a 91 and plug it with that.

XJdude2000

yep i got it fixed.... it was a 1/8 NPT... thanks for all the help.

mike37

good
it sucks when a .20 cent part screws up your day