Mirage775
Member
- Joined
- Dec 16, 2016
- Messages
- 63
- Reaction score
- 5
- Points
- 8
- Location
- Huntsville, AL
- Vehicle Year
- 2003
- Make / Model
- Ford
- Engine Size
- 4.0
- Transmission
- Manual
I replaced my complete thermostat housing this past Monday. I should've replaced the 2 sensors, but I didn't and that may be my problem. Anyway, after I finished replacing the housing and reinstalled everything. The truck fired up just fine! No leaks and ran great. It was about 46 degrees Monday afternoon. I drove to Autozone to return some things that afternoon and it started and ran fine, zero starting problems...
Tuesday morning, about 6am, it was 30 degrees and I got in my truck to head to work and it turned over, but never started! I tried to start it for 5-10 seconds, nothing. I turned the key off, then just turned it back on and it fired right up and ran fine! I work within 5 miles of my house and when I got to work, I shut it off and thought I'd try it again, to see if it hesitated starting, but it didn't! It fired right up! The heat didn't even have time to get hot on the way to work. 12 hours later, I left work and it did the same thing, with not starting immediately...
This morning, Wednesday, it was 20 degrees and it did the same thing as Tuesday. 9 hours later, when I got off work, it did it again...
I've talked to 2 different trusted mechanics and they're both stumped. One immediately said it was a fuel problem and to change my fuel pump and filter. I just changed both less than a year ago.
The other mechanic said it was due to the super low temps we've had. Or something in one of the two sensors in the thermostat housing, but he bet more on the weather...
I'm thinking that it's both the Temp Switch and Coolant Temp Sensor? I cannot find anything online, with 2 days of searching....
I had the TB off, so I replaced that gasket as well. I used CRC Electronic cleaner on every connector I removed as well.
It was running fine before I changed Thermostat Housings... Now, it's doing this. How can it not be related to something I changed?
If there's no replies by Friday, I'm just gonna take it all back apart and replace those sensors.
If anyone knows anything else about my problem, I would greatly appreciate any help?
Tuesday morning, about 6am, it was 30 degrees and I got in my truck to head to work and it turned over, but never started! I tried to start it for 5-10 seconds, nothing. I turned the key off, then just turned it back on and it fired right up and ran fine! I work within 5 miles of my house and when I got to work, I shut it off and thought I'd try it again, to see if it hesitated starting, but it didn't! It fired right up! The heat didn't even have time to get hot on the way to work. 12 hours later, I left work and it did the same thing, with not starting immediately...
This morning, Wednesday, it was 20 degrees and it did the same thing as Tuesday. 9 hours later, when I got off work, it did it again...
I've talked to 2 different trusted mechanics and they're both stumped. One immediately said it was a fuel problem and to change my fuel pump and filter. I just changed both less than a year ago.
The other mechanic said it was due to the super low temps we've had. Or something in one of the two sensors in the thermostat housing, but he bet more on the weather...
I'm thinking that it's both the Temp Switch and Coolant Temp Sensor? I cannot find anything online, with 2 days of searching....
I had the TB off, so I replaced that gasket as well. I used CRC Electronic cleaner on every connector I removed as well.
It was running fine before I changed Thermostat Housings... Now, it's doing this. How can it not be related to something I changed?
If there's no replies by Friday, I'm just gonna take it all back apart and replace those sensors.
If anyone knows anything else about my problem, I would greatly appreciate any help?