- Joined
- Oct 24, 2012
- Messages
- 2,400
- Reaction score
- 560
- Points
- 113
- Location
- Middle Tennessee
- Vehicle Year
- 1988
- Make / Model
- Ford
- Engine Type
- 4.0 V6
- Engine Size
- 4.0
- Transmission
- Manual
- 2WD / 4WD
- 4WD
- Total Lift
- 1.5" Front + 4" Rear
- Tire Size
- 245-70-R16
I have what sounds kinda like an engine knock sometimes and sometimes like very large air bubbles from boiling water going on most of the time when I cut the engine off. I've never noticed anything while driving.
Kinda sounds like the problem described in the Coolant By-Pass Kit TSB.
Also after stopping if I turn the key back to on so that gauges work the temperature gauge goes to the top of the normal range. Never past to the hot area and never while driving. It usually stays cool while driving sometimes so cool the heater just about goes out when it's really cold (like below 15F) outside.
I've also noticed that the coolant level checks fine when cold but if I check it immediately after stopping it's low. Add any coolant at this time and it just ends up in the reservoir.
I've recently replaced the thermostat with a Motorcraft part. New lower intake gasket. Also a junkyard replacement radiator that was completely stopped up when I got it. (Could turn it sideways and pour water in one side and none would make it to the other.) I thought we got all of the crap out but now I'm not so sure.
BTW, the reason the radiator and lower gasket were replaced was leaks.
I didn't have the problem before the work.
Sorry about the long post but wanted to give all relevant details.
Thanks.
Kinda sounds like the problem described in the Coolant By-Pass Kit TSB.
Also after stopping if I turn the key back to on so that gauges work the temperature gauge goes to the top of the normal range. Never past to the hot area and never while driving. It usually stays cool while driving sometimes so cool the heater just about goes out when it's really cold (like below 15F) outside.
I've also noticed that the coolant level checks fine when cold but if I check it immediately after stopping it's low. Add any coolant at this time and it just ends up in the reservoir.
I've recently replaced the thermostat with a Motorcraft part. New lower intake gasket. Also a junkyard replacement radiator that was completely stopped up when I got it. (Could turn it sideways and pour water in one side and none would make it to the other.) I thought we got all of the crap out but now I'm not so sure.
BTW, the reason the radiator and lower gasket were replaced was leaks.
I didn't have the problem before the work.
Sorry about the long post but wanted to give all relevant details.
Thanks.