Ok new to this so I hope I’m doing this right
I have a 91 fox with TFS 1 cam 165 heads, and AOD. Put this motor to get her and have been running it around town for about 2 months. Now when driving it the ten gage sits in the middle to slightly below. The issue is when at idle for more than 15 or 20 mins gage goes up and pushes coolant into over flow tank but doesn’t boil. I changed the radiator to a 2 core and replaced the fan clutch. Still the same. Doesn’t have the usual head gasket signs so I block tested and all good. No leaks any ware and hold pressure. Cap too is good. T-stay is a 195 and new. Is it a flow issue? Do I need to upgrade water pump or change t- stat. Or head gasket? Heats up quickly with ac on as well also when it cools fluid returns back to radiator. Been driving this car around for 2 months and it just started this. Any help would be appreciated thanks
I have a 91 fox with TFS 1 cam 165 heads, and AOD. Put this motor to get her and have been running it around town for about 2 months. Now when driving it the ten gage sits in the middle to slightly below. The issue is when at idle for more than 15 or 20 mins gage goes up and pushes coolant into over flow tank but doesn’t boil. I changed the radiator to a 2 core and replaced the fan clutch. Still the same. Doesn’t have the usual head gasket signs so I block tested and all good. No leaks any ware and hold pressure. Cap too is good. T-stay is a 195 and new. Is it a flow issue? Do I need to upgrade water pump or change t- stat. Or head gasket? Heats up quickly with ac on as well also when it cools fluid returns back to radiator. Been driving this car around for 2 months and it just started this. Any help would be appreciated thanks