- Joined
- Jan 21, 2023
- Messages
- 150
- Reaction score
- 84
- Location
- sherwood Oregon
- Vehicle Year
- 2005
- Make / Model
- Ranger XL
- Engine Type
- 2.3 (4 Cylinder)
- Engine Size
- 2.3
- Transmission
- Automatic
2005 Ranger rebuilt with 2.5 long block last year. Original cylinder head and Ecu. On a couple occasions at high rpm (3000+) the engine has spiked the temp gauge. On two previous occasions as soon as I dropped the rpm the temperature dropped to normal immediately. Ran several thousand miles with no overheat issues. I thought there may be a glitch in wiring or temp gauge. Today the temp spiked again going up a hill with engine over 3K this time throwing a P1299 code. Cylinder head was rebuilt last year at the time of the rebuild, water pump new, coolant new, has run without codes for several months. Checking with my reader the code is once again only P1299. The coolant temperature was high according to the code reader 235 or thereabouts. Ideas on how to proceed before taking it to a shop?