Operation Magpie.
Pro Wrench
Joined: Dec 2016
Posts: 1,603
Likes: 229
From: Fall City, WA
There is an easy way to see if the T-Stat is stuck
Plug in your code reader or if you have ultra gauge and do the following:
1. Let truck idle for 10 minutes with heater turned off or till temp levels out and note the coolant temp
2. Run the RPMs up to 3k and hold
3. If temp starts to drop, T Stat has opened. If temp does not decrease or increases, T Stat is stuck closed
Also, unclear as to why you have not bypassed the heater core, that is $8 bucks to figure out if it is the issue or not.
Plug in your code reader or if you have ultra gauge and do the following:
1. Let truck idle for 10 minutes with heater turned off or till temp levels out and note the coolant temp
2. Run the RPMs up to 3k and hold
3. If temp starts to drop, T Stat has opened. If temp does not decrease or increases, T Stat is stuck closed
Also, unclear as to why you have not bypassed the heater core, that is $8 bucks to figure out if it is the issue or not.
Right, i'll try the UG method tomorrow but.. the temps never really level out. They just keep climbing while idling 
As mentioned above, I had successfully blown water / coolant through the heater core by.. blowing on the hoses. Coolant came out, no sludge or anything. Did it on both sides.
As mentioned above, I had successfully blown water / coolant through the heater core by.. blowing on the hoses. Coolant came out, no sludge or anything. Did it on both sides.
There is an easy way to see if the T-Stat is stuck
Plug in your code reader or if you have ultra gauge and do the following:
1. Let truck idle for 10 minutes with heater turned off or till temp levels out and note the coolant temp
2. Run the RPMs up to 3k and hold
3. If temp starts to drop, T Stat has opened. If temp does not decrease or increases, T Stat is stuck closed
Also, unclear as to why you have not bypassed the heater core, that is $8 bucks to figure out if it is the issue or not.
Plug in your code reader or if you have ultra gauge and do the following:
1. Let truck idle for 10 minutes with heater turned off or till temp levels out and note the coolant temp
2. Run the RPMs up to 3k and hold
3. If temp starts to drop, T Stat has opened. If temp does not decrease or increases, T Stat is stuck closed
Also, unclear as to why you have not bypassed the heater core, that is $8 bucks to figure out if it is the issue or not.
Pro Wrench
Joined: Dec 2016
Posts: 1,603
Likes: 229
From: Fall City, WA
Right, i'll try the UG method tomorrow but.. the temps never really level out. They just keep climbing while idling
As mentioned above, I had successfully blown water / coolant through the heater core by.. blowing on the hoses. Coolant came out, no sludge or anything. Did it on both sides.
As mentioned above, I had successfully blown water / coolant through the heater core by.. blowing on the hoses. Coolant came out, no sludge or anything. Did it on both sides.
Well.. Got a 90 degree elbow from HD yesterday so going to bypass this silly heater core based on Friday Nights Disco's suggestion..
AND looks like i'll have to put it to the test.. Its pouring outside right now (550AM) and I have to get to school.. Not walking 1.5 miles in this sh-t so gonna have to drive ol' MagPie.
Plenty o parking lots to park in if it overheats in this 1.5 mile trek, so should be ok.
AND looks like i'll have to put it to the test.. Its pouring outside right now (550AM) and I have to get to school.. Not walking 1.5 miles in this sh-t so gonna have to drive ol' MagPie.
Plenty o parking lots to park in if it overheats in this 1.5 mile trek, so should be ok.