JPJMustang Posted February 28 Report Share Posted February 28 If I go to change the oil in the vehicle and the first 5 seconds run water? Water pump failure? JPJM 1 1 Quote Link to comment Share on other sites More sharing options...
1004ron Posted February 28 Report Share Posted February 28 (edited) Yes, and if it ran like that for a few miles the bearings will be trashed. Edited February 28 by 1004ron 1 Quote Link to comment Share on other sites More sharing options...
enigma-2 Posted March 1 Report Share Posted March 1 @JPJMustang most likely the water pump seals failed. My dealer quoted $1600-$1700 couple of years ago. They drop the subframe to service. (Good time to also have the plugs serviced as well.) Q. How many miles do you have on yours? (Thinking about having mine replaced as preventive maintenance around 170k.) 1 Quote Link to comment Share on other sites More sharing options...
JPJMustang Posted March 3 Author Report Share Posted March 3 have 180k on the vehicle - just had the transmission rebuilt JPJM Don't know how long it ran with the water that way - what is the easiest way to check? pulling the timing chain cover off now - to look at chain/etc. Quote Link to comment Share on other sites More sharing options...
1004ron Posted March 3 Report Share Posted March 3 There isn't an easy way to check for potential damage caused by the coolant in the oil other than a teardown inspection of the bearings. I don't think that the timing chain is sensitive to a short run with the coolant unless the tensioner was impacted. Probably best to take a chance and replace the coolant pump and hope for the best. Did you hear or feel anything with the engine running in this condition? Quote Link to comment Share on other sites More sharing options...
enigma-2 Posted March 4 Report Share Posted March 4 As @1004ron stated, the real harm is in the bearings. One area that's more sensitive is the lobe rise on the camshafts. Changes the timing. If the engine seems to be running OK, I'd stop driving it now and get the water pump fixed. (You'll also change out the timing chain and guides.) Also change the plugs while the engine is torn down. Its entirely possible that the plump failure is only a recent event. Coolant can drain into the pan quite quickly when the seal fails. Quote Link to comment Share on other sites More sharing options...
enigma-2 Posted March 5 Report Share Posted March 5 On 3/3/2025 at 12:09 PM, JPJMustang said: ... pulling the timing chain cover off now - to look at chain/etc. Big job. Have to remove the top and front of engine to reach. Going this far, you definitely change out water pump, timing chain, chain guides and plugs. My dealer drops the engine/transmission subframe to service. Claims it's easier that working on engine inside car. 1 Quote Link to comment Share on other sites More sharing options...
JPJMustang Posted March 6 Author Report Share Posted March 6 Thank you for the input it shut off at a stop sign and wouldnt start again Rolled it into a parking lot and had to get another battery. It did turnover but wouldn't start (tried once and then quit) That's when I started going for the water pump. JPJM Quote Link to comment Share on other sites More sharing options...
JPJMustang Posted Friday at 08:10 PM Author Report Share Posted Friday at 08:10 PM One question - have the engine pulled apart (in the car). Trying to line up the timing marks - Have the outside can turned to the propoer position trying to turn the rear (closest to firewall) cam to line up - having trouble - any idea? Also - is there an easy way to turn the crankshaft? JPJM Quote Link to comment Share on other sites More sharing options...
enigma-2 Posted Saturday at 03:26 AM Report Share Posted Saturday at 03:26 AM This guy walks through how he lines up the phasers & crank. May want to watch it all the say through. (42 minutes.) Quote Link to comment Share on other sites More sharing options...
JPJMustang Posted Saturday at 11:13 PM Author Report Share Posted Saturday at 11:13 PM (edited) thank you - got everything turning except the crankshaft wont turn Have the car in neutral - is there something Im still missing? Hopefully the bearings arent so shot that the crank wont turn???? JPJM Edited Saturday at 11:58 PM by JPJMustang Quote Link to comment Share on other sites More sharing options...
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