Joey DeLorenzo
Active Member
This is a PSA for anyone who has had this issue, as well as a Request for Information (probably from FordTechOne eventually) :
About 2 months ago I noticed that if I was doing highway speeds (70 - 80 MPH) and I let off the accelerator my coolant temp would start to spike. Depending on how long the engine would run the temperature would gradually get higher and higher. At first it was every 6-7 accelerator let offs, but recently it was every single time I'd take my foot off the accelerator. On a routine 5 hour drive it would start almost immediately. I'd let off the accelerator and coolant temp would rise to 228, an hour later it'd rise to 230, and by hour 5 it was rising all the way to 238. After about 30 seconds it would go right back down below 226 (which is where I believe the truck stops giving you numbers).
I took my truck to Bozard Ford in St Aug (Again, I highly recommend them for everything and anything) and they ran a pressure test. The results were "slightly low". They found leaks from the water pump and thermostat housing and upon tear down they found debris in the coolant system. They replaced the thermostat, water pump, and associated gaskets-- all under warranty.
Here are my questions:
1) Has anyone else had this problem, and if so, what solved it for you? (If something else solved it, I'd be curious what it was to see if there's another problem)
2) Should I be worried about "debris in the coolant system"-- not a mechanic, but I am a pilot, and I know debris found in any liquid where it isn't supposed to be is not optimal.
3) As I cross my 100k mile mark here in the next few months, is there anything specific to this incident I should be asking about?
I've read the forum posts for other common "Coming up on 100K miles" stuff so I'm tracking most of that.
Post over, but I'm going to publicly commend Bozard Ford. Not only did they fix this problem, they heard my start up was "noisy" and used chassis ears to diagnose a bad idle pulley, belt tensioner, and an elongated belt. They then found a small leak in the oil pan that I didn't know about or report and replaced my oil pan. They performed the Cam Phaser PCM Reprogram TSB (My advisor asked if I was tuned, not to catch me but she didn't want to override my PCM calibration if I was, but I'm not, so they did it). They also performed a Brake Master Cylinder TSB I didn't know existed. All of this was done under warranty. I was able to drop it off the Friday the week I called (I have a service adviser I always work with and she snuck me in even though they're booked for months), they had an enterprise loaner (Dodge Ram 1500 Lariat which I was more than happy to get out of because it sucked) ready, and they completed it on Monday-- washed, detailed, and ready for pick up. They have my full faith and confidence so I'll sing their praises left and right.
About 2 months ago I noticed that if I was doing highway speeds (70 - 80 MPH) and I let off the accelerator my coolant temp would start to spike. Depending on how long the engine would run the temperature would gradually get higher and higher. At first it was every 6-7 accelerator let offs, but recently it was every single time I'd take my foot off the accelerator. On a routine 5 hour drive it would start almost immediately. I'd let off the accelerator and coolant temp would rise to 228, an hour later it'd rise to 230, and by hour 5 it was rising all the way to 238. After about 30 seconds it would go right back down below 226 (which is where I believe the truck stops giving you numbers).
I took my truck to Bozard Ford in St Aug (Again, I highly recommend them for everything and anything) and they ran a pressure test. The results were "slightly low". They found leaks from the water pump and thermostat housing and upon tear down they found debris in the coolant system. They replaced the thermostat, water pump, and associated gaskets-- all under warranty.
Here are my questions:
1) Has anyone else had this problem, and if so, what solved it for you? (If something else solved it, I'd be curious what it was to see if there's another problem)
2) Should I be worried about "debris in the coolant system"-- not a mechanic, but I am a pilot, and I know debris found in any liquid where it isn't supposed to be is not optimal.
3) As I cross my 100k mile mark here in the next few months, is there anything specific to this incident I should be asking about?
I've read the forum posts for other common "Coming up on 100K miles" stuff so I'm tracking most of that.
Post over, but I'm going to publicly commend Bozard Ford. Not only did they fix this problem, they heard my start up was "noisy" and used chassis ears to diagnose a bad idle pulley, belt tensioner, and an elongated belt. They then found a small leak in the oil pan that I didn't know about or report and replaced my oil pan. They performed the Cam Phaser PCM Reprogram TSB (My advisor asked if I was tuned, not to catch me but she didn't want to override my PCM calibration if I was, but I'm not, so they did it). They also performed a Brake Master Cylinder TSB I didn't know existed. All of this was done under warranty. I was able to drop it off the Friday the week I called (I have a service adviser I always work with and she snuck me in even though they're booked for months), they had an enterprise loaner (Dodge Ram 1500 Lariat which I was more than happy to get out of because it sucked) ready, and they completed it on Monday-- washed, detailed, and ready for pick up. They have my full faith and confidence so I'll sing their praises left and right.
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