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Fuel-system DTCs in the ECM
Peterbilt: 03-01649
4722001601
Manufacturer PAI Industries Part Number 331374 Part Type Exhaust Manifold Gasket Assembly (Sleeve + Gasket) Engine Compatibility Caterpillar 3406E
Business Class M2
Replacement Fan Override Switch For Peterbilt 79PSL3-4 Elemax Fuel-system DTCs in the ECMAftermarket fan override pressure switch for Peterbilt and Kenworth A C systems, replacing 79PSL3 4, P27 1051, MEI Air Source 1310, and Red Dot RD5 4625 0. Normally closed switch opens at 310 psi and closes at 240 psi for R134a refrigerant, with a 2 pin connector and female M10 1. 25 mounting thread. Signs You Need a New Fan Override Switch A C system fails to maintain cabin temperature on hot days Engine fan does not engage during high pressure A C
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