SILL overheating! Help
Captain
Joined: Nov 2008
Posts: 742
Likes: 0
From: Virginia Beach, VA
Get the timing checked. My truck runs hot and I was pulling my hair out trying to understand *WHY* even though I had rebuilt the engine, had a new radiator and installed a rebuilt and then new water pump. I went through two thermostats (stock) that both tested fine in a pot of hot water. The so-called "advice" people gave me was to go with a cooler thermostat which isn't going to solve the issue of running hot. I finally had the timing checked and discovered it's 9.7º advanced. Now that I know the problem I have to get a reprogrammed PCM.
You have piqued my interest.
Last edited by JackJ; Apr 23, 2010 at 02:19 PM.
Thread Starter
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Professional
Joined: Mar 2010
Posts: 119
Likes: 0
From: Virginia Beach, VA
"The PCM adjusts ignition timing based on inputs it
receives from:
† The engine coolant temperature sensor
† The crankshaft position sensor (engine speed)
† The manifold absolute pressure (MAP) sensor
† The throttle position sensor
† Transmission gear selection"
so, i'll check my timing. If it's off, I'll check these sensors. I think the chances of the PCM going bad is a lottttt less than these rinky dinky sensors.
receives from:
† The engine coolant temperature sensor
† The crankshaft position sensor (engine speed)
† The manifold absolute pressure (MAP) sensor
† The throttle position sensor
† Transmission gear selection"
so, i'll check my timing. If it's off, I'll check these sensors. I think the chances of the PCM going bad is a lottttt less than these rinky dinky sensors.
Captain
Joined: Nov 2008
Posts: 742
Likes: 0
From: Virginia Beach, VA
"The PCM adjusts ignition timing based on inputs it
receives from:
† The engine coolant temperature sensor
† The crankshaft position sensor (engine speed)
† The manifold absolute pressure (MAP) sensor
† The throttle position sensor
† Transmission gear selection"
so, i'll check my timing. If it's off, I'll check these sensors. I think the chances of the PCM going bad is a lottttt less than these rinky dinky sensors.
receives from:
† The engine coolant temperature sensor
† The crankshaft position sensor (engine speed)
† The manifold absolute pressure (MAP) sensor
† The throttle position sensor
† Transmission gear selection"
so, i'll check my timing. If it's off, I'll check these sensors. I think the chances of the PCM going bad is a lottttt less than these rinky dinky sensors.
Legend
Joined: May 2005
Posts: 8,663
Likes: 8
From: Central Oklahoma
I'll have to look up the specifics on why advanced timing will cause the engine to run hot.Yes, I'm wondering if I have a bad coolant sensor considering that some days the temp gauge is OK and then others she's hot, causing it to run hot and boil.
Legend
Joined: May 2005
Posts: 8,663
Likes: 8
From: Central Oklahoma
You won't find it because it can only be checked with a DRB scan tool.