![HOW TO DIAGNOSE A HEATER CORE WITH TEMPERATURE TESTING TOOL: 5811585 - global parts distributors, llc HOW TO DIAGNOSE A HEATER CORE WITH TEMPERATURE TESTING TOOL: 5811585 - global parts distributors, llc](http://www.gpdtechtips.com/uploads/8/2/8/2/82823116/published/picture1_12.png?1625060066)
HOW TO DIAGNOSE A HEATER CORE WITH TEMPERATURE TESTING TOOL: 5811585 - global parts distributors, llc
![Changed my leaking heater core. Been stalling on this one since last spring. 2 full afternoons and she wouldn't start when I did a test before putting everything back together. : r/fordranger Changed my leaking heater core. Been stalling on this one since last spring. 2 full afternoons and she wouldn't start when I did a test before putting everything back together. : r/fordranger](https://preview.redd.it/changed-my-leaking-heater-core-been-stalling-on-this-one-v0-3egp9do2bfy91.jpg?width=4032&format=pjpg&auto=webp&s=39e795323df19b1195e0b537c0b12b636cd7596f)
Changed my leaking heater core. Been stalling on this one since last spring. 2 full afternoons and she wouldn't start when I did a test before putting everything back together. : r/fordranger
![Amazon.com: ICT Billet 5/8" Stepped to 3/4" Hose Testing Blow Out Tool to 1/4" Air Compressor Quick Connect Adapter Test Fitting Tester Clean Out Backflush Heater Core Tool .625" .75" Inch Hose Amazon.com: ICT Billet 5/8" Stepped to 3/4" Hose Testing Blow Out Tool to 1/4" Air Compressor Quick Connect Adapter Test Fitting Tester Clean Out Backflush Heater Core Tool .625" .75" Inch Hose](https://m.media-amazon.com/images/I/61sZvSB9UKL.jpg)