rridc1
New member
HI all, new to forum happy to see one for The AT4 family. Thanks for any help in advance.
So I have a 2019 AT4 6.2l, mods are a Rotofab air intake, upgraded throttle body, flow master exhaust, and a Pulsar LT. I am on my 3rd motor, after this last motor replaced by the dealer under warranty they told me to go get the truck tuned because the truck is running lean and they couldn't figure out why. So they told me to go get it tuned that should help the issue. I called a reputable tuner in my area explained the issue to him, his response was that I would have to figure out the overheating issue first before he would tune it, and told me that a tune wont help out my situation, so I would have to get it fixed first before he would touch it. I have changed the thermostat and engine cooling sensor since those were the cheapest and easiest fix, but to no avail. The overheating issue I'm having is when I'm driving at highway speeds 80-90 for no reason the truck will heat up to what temp I think is like 230 (the big marker between 210 and 260) randomly not all the time but most of the time, sometimes I could be doing 100+ with no overheating sometimes, but anything under 75 runs under 210 never overheats. when I do notice most of the time when I slow down to 70-75 cools back down real fast in seconds. I just noticed on this new motor but the last time it blew I was not noticing it was overheating cause it goes back down so fast if your not paying attention you wont even notice it I think that's how it blew both times before but now I noticed. No one can figure out this overheating issue I've talked to several different mechanics and mechanic friends no one really knows what it can be. I love my 6.2l and don't want to upgrade to a newer truck to have the same or other issues. I'm sure if I figure this out this time my engine would last alot longer... lol
Help anyone tnx for reading.
So I have a 2019 AT4 6.2l, mods are a Rotofab air intake, upgraded throttle body, flow master exhaust, and a Pulsar LT. I am on my 3rd motor, after this last motor replaced by the dealer under warranty they told me to go get the truck tuned because the truck is running lean and they couldn't figure out why. So they told me to go get it tuned that should help the issue. I called a reputable tuner in my area explained the issue to him, his response was that I would have to figure out the overheating issue first before he would tune it, and told me that a tune wont help out my situation, so I would have to get it fixed first before he would touch it. I have changed the thermostat and engine cooling sensor since those were the cheapest and easiest fix, but to no avail. The overheating issue I'm having is when I'm driving at highway speeds 80-90 for no reason the truck will heat up to what temp I think is like 230 (the big marker between 210 and 260) randomly not all the time but most of the time, sometimes I could be doing 100+ with no overheating sometimes, but anything under 75 runs under 210 never overheats. when I do notice most of the time when I slow down to 70-75 cools back down real fast in seconds. I just noticed on this new motor but the last time it blew I was not noticing it was overheating cause it goes back down so fast if your not paying attention you wont even notice it I think that's how it blew both times before but now I noticed. No one can figure out this overheating issue I've talked to several different mechanics and mechanic friends no one really knows what it can be. I love my 6.2l and don't want to upgrade to a newer truck to have the same or other issues. I'm sure if I figure this out this time my engine would last alot longer... lol
Help anyone tnx for reading.
