Explorin'VA
Well-Known Member
- Joined
- September 7, 2012
- Messages
- 329
- Reaction score
- 4
- City, State
- P-twn
- Year, Model & Trim Level
- '94 xlt
My temp. gauge always read cold so I replaced my thermostat assuming it was stuck.
Here's what I did:
Drained my coolant, took off my upper radiator hose, unbolted the thermostat housing, removed old thermostat, drilled 1/16th hole in new thermostat where pressure release valve should have been, put in new thermostat in the correct direction, bolted its housing back up, installed new upper radiator hose, refilled my coolant and burped the air out of the system. I left my lower radiator hose in for the time being.
Here's what happens when I start the truck:
Rough start that feels like a misfire, RPMS stay very low at start up and idle, idles rough, hesitates when accelerating from stop, drives fine when I pick up some speed. Check engine light comes on as soon as I put it into gear.
I have replaced the spark plugs. I also drained, refilled and burped my coolant again to make sure air wasn't in it. Neither of these helped.
Should I try putting in my old thermostat? Is my water pump bad? Check for vacuum leaks? Replace IAC valve? Maybe coolant wasnt flowing properly and i cracked a cylinder head. All I know is something happened while replacing the thermostat. I'm not sure what I should check for next. I haven't checked the trouble codes yet.
Thanks for any help.
Here's what I did:
Drained my coolant, took off my upper radiator hose, unbolted the thermostat housing, removed old thermostat, drilled 1/16th hole in new thermostat where pressure release valve should have been, put in new thermostat in the correct direction, bolted its housing back up, installed new upper radiator hose, refilled my coolant and burped the air out of the system. I left my lower radiator hose in for the time being.
Here's what happens when I start the truck:
Rough start that feels like a misfire, RPMS stay very low at start up and idle, idles rough, hesitates when accelerating from stop, drives fine when I pick up some speed. Check engine light comes on as soon as I put it into gear.
I have replaced the spark plugs. I also drained, refilled and burped my coolant again to make sure air wasn't in it. Neither of these helped.
Should I try putting in my old thermostat? Is my water pump bad? Check for vacuum leaks? Replace IAC valve? Maybe coolant wasnt flowing properly and i cracked a cylinder head. All I know is something happened while replacing the thermostat. I'm not sure what I should check for next. I haven't checked the trouble codes yet.
Thanks for any help.