3126, 3126b, 3126e engines with (1) fuel filter | iRV2 Forums
Mar 30, 2020 · I have all the information for those of you that have the 3126, 3126b, and 3126e with a single fuel filter. Cat just does not make a fuel/water separator for that engine setup that …
cat 3126 | iRV2 Forums
Jul 2, 2020 · PH Coolant level sensor location Hi I am looking for the coolant level sensor on a cat 3126 engine in an allegro bus 1997 thanks Phil Phil2110 Thread Aug 1, 2021 cat cat 3126 irv2 …
3126 Fuel Pressure Troubleshooting | iRV2 Forums
Mar 26, 2022 · Hello I have a 99 GMC with a 3126 cat engine. It has close to 200k miles, but ran great. Was parked on an incline facing up over the winter and started right up after sitting for …
1999 cat 3126 ecm | iRV2 Forums
Dec 2, 2024 · I hope this aids someone in diagnostics, 1999 cat 3126 will not start and noticed check engine light will not come on. Tachometer does not move when cranking. 2 pins 52 and …
HEUI pump oil line upgrade from rubber style line - iRV2
Apr 29, 2019 · Click to expand... FYI that kit does not fit all 3126 B or E set ups. the front page of the instructions I posted lists the series of motors that it will fit. Good luck Shocks.
What is difference between 3126 and 3126B - iRV2
May 25, 2014 · Caterpillar made some HP/TQ changes in the 3126 to make the engine a 3126B. Cat will only change model designations when the HP/TQ and or performance has changed on …
High pressure oil line | iRV2 Forums
Mar 28, 2023 · 2001, Fleetwood discover cat 3126 B. Developed a leak in the high pressure, flexible, oil line that goes from the bottom of the Huey up to the cylinder head. Has quick …
ECM Removal | iRV2 Forums
Apr 7, 2021 · Has anyone had occasion to remove their ECM from the CAT 3126 in a 2004 Phaeton. I looks to be buried below the HEUI pump and other things. From what I can tell, I'll …
2002 Cat 3126 | iRV2 Forums
Mar 4, 2018 · Aug 29, 2025 Jim_HiTek DA Cat 3126 slow oil leak - exhaust side, transmission back dansawyer Aug 31, 2024 Caterpillar Engine Forum Replies: 3 Views: 399 Sep 1, 2024 …
2004 Cat 3126 Known Issues? | iRV2 Forums
Feb 9, 2021 · OK guys and gals. I'm looking at a 2004 coach with a Cat 3126 engine. I am completely unfamiliar with this engine and am wondering about any known issues...