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Our “new” 1993 Ford Ranger 2.3 L, 1026945 mi has an elusive coolant leak unable to pinpoint where it’s coming from yet with smoking coming up from the EGR tube down where the exhaust manifold is. The smoke is to the back passenger side under the hood. The Heater Core is up and to the right and is a-ok… this is coming up from down under. I am having a tough time finding a diagram of the cooling system. The visible coolant leak onto the ground comes when the car is at operating temperature under the block it seems. The smoke concerns me especially as I do know coolant is flammable. Anyone experience something like this? I don’t know where to begin and finding diagrams of the cooling system is like pulling teeth. Any help appreciated.
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Coolant temp sensor…
Not the smartest design at the time but they do make a refit housing to relocate the sensor.hi nice work nightflyr so much detail information i love it.
so much to read .
now let undestand you found coolant leak but don’t no where is coming from ?
also you found oil in your reservoir but none in radiator?
can i ask you is this vehicle yours?
how long have you had for
reason i ask is that most cases people buy car not knowing that the head gasket been replace.
so all tho radiator gets flushed there will always be small amount oil that normal reservoir picks up.
as for the leak most time comes from water pump when seals starting to fail most time is dificult to see as cooland drips out
from tiny holeWe just bought it last month, had to clean-up the IAC, EGR and upper Manifold for the emissions due to the NoX. The Coolant appears to have been indeed the water pump, clear coolant stains baked into surrounding areas upon its removal. Getting the caked on gasket off where I am with that part of it. The oil droplets and small gunk pieces in the coolant seem to have been residual, possibly the cap was off when the prior owner had it. The coolant drained out is clean with nothing floating on top, why I’m suspecting contamination from external source in the reserve. Upon the second duplication to get the leaks repeated, was able to see two separate leaks, oil to the back and coolant to the front. And being there is no oil-cooler on the truck, the mix on the first duplication that dripped was most likely puddling together, the coolant flowing back into the oil.
The Oil Filter looked good on its take out, no oil on the outside. The oil itself, however is black as dirt. Tonight I took off the valve cover and the gasket was in sad shape, new one going in as soon as the weather permits… big storms expected through here tonight into tomorrow, but wanted to get a look see inside there so went ahead and did that. The next level down looks dry where the head is on the case, seeing on the back-end impossible, but hands coming back clean there. Looks like the oil leak is located to the valve cover gasket. But I am not so inclined to have it diagnosed just to that one area just yet.
We got it for a great price from my son’s friend’s father in law, knowing there was an issue with the emissions. We’re still happy with the purchase and have the time and hardheadedness to address a 23 year old truck. After everything done to get the Taurus back up and running, the truck doesn’t scare me, lol. Just so long as that head’s still good will keep on plugging away at her.
nice you have pick up a good truck.
only sounds like minor issues to me.
wish you all best .
keep us postedoh by the way weather here is just as bad getting storms every afternoon.
feels like world coming to end very scary.
good luckI cannot figure out what this is and what it plugs into. Reassembling everything and this is staring at me mockingly. I don’t have a camera, it’s mounted below the AC coolant intake valve to the battery stand. It has two tubes coming out, one small and electrical connected in but the other that is mocking reaches all the way back to the firewall and is just a tube, but I cannot figure out what it plugs into. It has two caps that in taking them off look like a filter of some sort. What is it and where does the end plug into?
Figured it out! Fuel Vapor Canister, connects back where the Egr and IAC are in the manifold.
Have replaced the Valve Cover Gasket, the Water Pump, refilled with fluids, but looks like I do need to do the oil pan gasket as there was a fresh drop of oil this morning that seems to follow back up to there. Will know tomorrow if the Cooling leak was resolved.
She’s good to go and my husband drove her to work today with flying colors. She’s also a lot quieter than when we got her. As a funny aside, whn he took her out yesterday,he came back saying coolant was just streaming out. I was totally bummed, checked everything and everything dry…ugh I thought, we will have to take her in after all. Went to remove my tools and turns out the old drained coolant container was in the back of the truck and had tipped over. I had to laugh. Anywho, Thank you guys so much for all your help.
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