Have a CAT TL 12-55 came from Texas to Canada and sat for a while in -25c temps- managed to get it going and in to the repair shop-changed fuel and filters and bled system but would not start with out a shot of starting fluid all glow plugs working and low press pump putting out 40-80 psi when running- then the engine would not start at all found injector high press pump not working replaced the pump an now back to needing starting fluid again to get running-has new diesel fuel old fuel removed- have no scan tool for this- has any one tried an OTC 3418 scan tool on Cat engines and if so does it give good sensor readings as I may purchase one if they work ok-one other problem when park brake switch is turned off and put in gear there is no throttle response-all fuel lines checked for air leaks-stating to pull out hair any help would be great.