new coolant leak - help ID source please!

[rodeo02]

fletch, that's the area I'm thinking it is. There are O rings back there. Can't seem to find the old posts that were floating around on it. IIRC- they were from 2eyefishclaw quite a while ago.

G/luck
Joel

[surferfletch]

Thanks. I went down to the parts store, but they don't have the specific o-rings for the water pipe and manifold union. I'm wondering if I can fly with generic o-rings of the same size. I wonder where he got his...

I'm about 2 hours into it. This is going to be one of those weekends where the Rodeo and I spend some quality time together!

[HINDAO]

1994 Passport aficionado's BEWARE-It could be the o_rings BUT and I Stress BUT before you start dismantling the Manifolds, Think LOCATION_LOCATION, meaning if it is leaking from between the oil pan and the A/C housing or Between the Alternator housing and the Oil Pan it can ACTUALLY be the WATER PUMP>>>The WATER PUMP has a weep hole (AT least mine did), and if it is bad, loose, or worn (EVEN IF YOU HAD IT CHANGED OVER A YEAR AGO LIKE I DID), then COOLANT will LEAK from the weep hole--NO MATTER WHAT YOU CHANGE---If the vehicle is in Park on Normal incline it still will leak without running the engine. IT WILL LEAK just by GRAVITY alone. DON"T SPEND TIME resealing the WATER PUMP with new GASKETS, Just replace the WATER PUMP. It is only a $70.00 Part and it comes with a gasket with it already. Maker sure you use RTV silicon on both sides of the gasket. It will save you a load of time.

>>>>>>Second The COOLANT PIPE that runs through the MANIFOLD--it runs to the rear of the engine as you face your vehicle, from the direction of the radiator towards the engine compartment wall. It is connected to radiator with LARGE BORE HOSE on the TOP Drivers side radiator connection. It then runs beside the thermostat housing under and through the Intake Plenum-manifold,and connects in rear of main manifold, at a T connection on the lower manifold. A LEAK can spring from there and will probably flow to the rear and end up leaking by the transmission housing and mucking everything on top of the engine. IF the LEAK is at the front by the A/C or ALT housing and oil pan seriously consider changing the WATER PUMP. AGAIN, So replacing the O-Rings MAY NOT be necessary-if your LEAK LOCATION is the FRONT. Then consider changing the WATER PUMP but if it is in the back then Consider the O-RINGS, repair at your discretion.

>>>>>>>>>>>>>>>THIRD there are SMALL VACUUM HOSES 3/8 inch in Diameter that are attached to that grey COOLANT PIPE that runs besides the THERMOSTAT HOUSING down-under and just BEFORE it Runs in through the Manifold LOOK for a 3/8 hose that T's off that COOLANT PIPE -and connects to your air intake device--that might be cause for coolant to pool on top of the MANIFOLD. IF it is then just change that hose-a foot of 3/8 hose costs about a dollar, and you will be in business again. OTHERWISE Good Luck!

[Ramblin Fever]

HINDAO - thanks for the suggestions, but you do realize this thread is 4yrs old?

[FL 3.2L]

Wow. Nasty flashback!

[Ramblin Fever]

Originally Posted by FL 3.2L

Wow. Nasty flashback!

Didn't mean it to sound nasty Sorry if I did

[FL 3.2L]

Naw. I had a flashback! Took me forever and a shop visit to get my leak fixed.

[Ramblin Fever]

That's right....I remember now....