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timtechcorvairwiki:06a_engine:special_oil_pressure [2015/01/13 17:06] (current)
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 +====== Special Oil Pressure Switches ======
 +**By Mike Sweaney with some help from Tim Palmer**
  
 +Tim and I were talking about all the trials I had in finding a multi purpose oil pressure switch. The following is EVERYTHING I know about this subject. Here goes.
 +
 +NOTE: The following part numbers are NAPA numbers unless otherwise noted.
 +
 +|{{Image4.gif?​111x105|Graphic OP 6618}}| First choice:\\ OP 6618 #2 opens at 2-6 lbs. pressure. (Connects to oil pressure light.)\\ #1,3 closes at 1-9 lbs. pressure. (Connects to fuel pump.)\\ |
 +|{{Image5.gif?​127x86|Graphic OP 6653}}| Second choice:\\ OP 6653 REQUIRES SPECIAL PLUG. #2 opens at 2-6 lbs. pressure. (Connects to oil pressure light.)\\ #1,3 closes at 2-6 lbs. pressure. (Connects to fuel pump.) GM #25036940 Switch $8.50\\ GM #12085499 Connector $28.00 + According to the GM parts guy the sending unit and connector can be found on the following cars in the salvage yard.\\ 90-92 W body 3.1 engine\\ 88-89 A body 2.8\\ 87-91 J body 2.8/3.1\\ 88-89 L body 2.8 |
 +|{{Image6.gif?​95x91|Graphic OP 6626}}| Third choice:\\ OP 6626 #2 opens at 2-8 lbs. pressure. (Connects to oil pressure light.)\\ #1,3 closes at 11 lbs. pressure. (Connects to fuel pump.)\\ |
 +
 +For those of you have not figured out what these switches are for, I will enlighten. The extra set of contacts is used as a safety circuit for Corvairs with electric fuel pumps. The switch won't allow the pump to run unless the engine is running.
timtechcorvairwiki/06a_engine/special_oil_pressure.txt ยท Last modified: 2015/01/13 17:06 (external edit)