Dtc 36
I installed a brand new delphi opti about 6 months ago. I've put maybe 5k miles on the car since then. The other day the check engine light comes on and its a DTC 36 hi res failure. Tonight I am driving home and I notice both the tach and speedo are twitching. I stop at a gas station for a few and when I go to start the car it was hard to start. I had to give it gas, but once running I drove for about 1.5 hours home and it ran and idled fine. The tach and speedo would still jump around, but I couldn't hear the engine actually changing speeds. Is there anyway to test to see if its really the opti or maybe something simpler like the opti harness? Thanks.
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Yes, you can unplug the opti harness up on the passenger side of the intake. With the ignition on using a volt meter measure the voltage on terminal b. on the pcm side. If it is between 4 to 6 volts turn the key off and reconnect the harness. Then unplug the harness from the opti turn the key on and check terminal B on the plug that goes into the opti. If it is between 4 to 6 volts then I would say the harness is OK. Although check for Blue/grennish corrosion anyway. If those readings are correct the shop manual says that its either a faulty distributor connection or faulty distributor. I just had the same thing happen to me but mine was the low res. This test is from a 95 Shop manual. You should give yourself a sig with at least some basic info about your car. It makes it alot easier to help you
Here is a link to show you a diagram http://shbox.com/1/95_ign_system_schematic.jpg |
thanks, I will test that here in a bit.
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