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- Joined
- Sep 9, 2019
- Messages
- 3
- Points
- 501
- City
- Senoia, GA
- State - Country
- GA - USA
- Vehicle Year
- 2004
- Vehicle
- Ford Ranger
- Drive
- 4WD
- Engine
- 4.0 V6
- Transmission
- Automatic
So all was well until a few months ago, on the way to work, got a Check Engine light. No new vibrations or sputtering or anything with it, just the light. I checked it with an OBD reader and it returned P0128 - engine coolant temp too low to read/register. So I replaced the thermostat.
Some time later, not sure how long it's kind of all running together at this point, the light came back. Checked it again, again P0128. I consulted with YouTube and was made aware that it will throw the same code for a bad coolant sensor. Replaced the coolant sensor and all was well....for about two days then the code came back.
When I clear it, it goes away for awhile and will come back randomly. I'm also starting to notice a pattern of the truck throwing the code when/after I go over a bump, which makes me think it's a wiring issue but I'm no mechanic and have no experience troubleshooting wiring harnesses.
Any ideas or insights are MUCH appreciated!
Some time later, not sure how long it's kind of all running together at this point, the light came back. Checked it again, again P0128. I consulted with YouTube and was made aware that it will throw the same code for a bad coolant sensor. Replaced the coolant sensor and all was well....for about two days then the code came back.
When I clear it, it goes away for awhile and will come back randomly. I'm also starting to notice a pattern of the truck throwing the code when/after I go over a bump, which makes me think it's a wiring issue but I'm no mechanic and have no experience troubleshooting wiring harnesses.
Any ideas or insights are MUCH appreciated!
