 Oil pressure indicator, Inop? |
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| 914werke |
 Oct 8 2018, 10:18 PM
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"I got blisters on me fingers"  Group: Members Posts: 10,123 Joined: 22-March 03 From: USofA Member No.: 453 Region Association: Pacific Northwest 
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So, troubleshooting the Oil pressure idiot light.
Its supposed to be lit upon key on pwr. once the eng. is fired the pressure in the galley causes the switch to ground out, extinguishing the light. or some such.... Anyway the 74 2.0L Im working on , indicator does not illuminate when key on. Easy to figure out you'd think. 1st pull the gauge to check if the bulb is burned ..nope. Test the source pwr (white w/red wires)... yup Test continuity end to end of the sender wire....yup So I wired up the circuit with independent pwr. ... works like it supposed to Put it back together... it starts working (IMG:style_emoticons/default/blink.gif) (IMG:style_emoticons/default/idea.gif) Ok great next up ...wait ..couple of ignition cycles & it stops again (IMG:style_emoticons/default/headbang.gif) (IMG:style_emoticons/default/headbang.gif) (IMG:style_emoticons/default/wacko.gif) (IMG:style_emoticons/default/WTF.gif) Check fuse 9, replace for good measure & clean the terminals. Im thinking there is a ground issue somewhere ... so I check ground point A, loose. Ground point B, loose.. check all the rests clean & tighten just to be sure. No change.. (IMG:style_emoticons/default/confused24.gif) So this car still has it seat belt interlock & fasten seatbelt light ..that work. But I check the ground spade there & clean, it all looks surprisingly tidy. But still no joy! (IMG:style_emoticons/default/chair.gif) I need some BTDT help...anyone? |
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Posts in this topic
914werke Oil pressure indicator Oct 8 2018, 10:18 PM
falcor75 Did you replace the bulb with a new one? (if not ... Oct 8 2018, 11:14 PM Spoke
once the eng. is fired the pressure in the galley... Oct 8 2018, 11:51 PM GregAmy Remove the terminal on the OP sensors/switch and s... Oct 9 2018, 05:14 AM 914werke I think you meant when the engine fires the oil p... Oct 9 2018, 09:18 AM VaccaRabite If you are starting and stopping the engine repeat... Oct 9 2018, 12:10 PM
914werke Thanks zach but that didnt turn out to be the prob... Oct 9 2018, 03:24 PM  |
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