Camshaft position sensor issue
Hi guys! I have a '96 ranger 2.3L i4 manual.
Hoping someone can point me in the right direction on this issue. I'm getting a code P0340 which is a camshaft position sensor issue. The truck stutters a bit when I hit the gas, it's just a work truck so it's never bothered me much, but it's smog time. So I replaced the sensor and of course the issue persists. So I got a little deeper.
I broke out the oscilloscope and at pin 85 (DK BLU/ORANGE) on the ECU I'm seeing the pulses that the camshaft position sensor is making which seem fine, but when I turn on the headlights, the noise in the signal seems to increase quite a bit. Not sure if this is normal or not, hoping someone can take a look at the pics I included.
Anecdotally, I swear it stutters more when the headlights are on. Any other ideas as to what could be causing this issue if it's not this headlight thing?
Thanks!!
Last edited by zakelectric; 08-14-2018 at 11:10 PM.
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