Restoring Rusty - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**hatzie** · 06-13-2019, 10:48 AM

Yep. The only purpose for the oil pressure sensor wiring to the PCM is to send the Class II serial data about oil pressure to the Class II Serial input on the instrument cluster module.
You will need to install a water temp sender for your analog gauge. I'd just remove the metric bung and drill and tap the head that doesn't host the PCM engine temp sender.

**Gregski** · 06-13-2019, 11:04 AM

Quote:

Originally Posted by hatzie

You will need to install a water temp sender for your analog gauge. I'd just remove the metric bung and drill and tap the head that doesn't host the PCM engine temp sender.

Yup, but I went the adapter route, not sure if that will significantly effect the accuracy, but it's good enuff for the girls we date!

**hatzie** · 06-13-2019, 11:54 AM

Quote:

Originally Posted by Gregski

Yup, but I went the adapter route, not sure if that will significantly effect the accuracy, but it's good enuff for the girls we date!

As long as it doesn't shroud the end of the thermistor it shouldn't cause problems.
If the sensor is shrouded it'll be lazy and lag on faster temp changes.

06-13-2019, 10:48 AM	#1
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,916	Re: Restoring Rusty Yep. The only purpose for the oil pressure sensor wiring to the PCM is to send the Class II serial data about oil pressure to the Class II Serial input on the instrument cluster module. You will need to install a water temp sender for your analog gauge. I'd just remove the metric bung and drill and tap the head that doesn't host the PCM engine temp sender. __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful.



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