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Originally Posted by JohnM.
Benzborg, 3.65V is actually ~70% duty cycle. A 50% duty cycle is what your engine would optimally be at idle. 6.5V is ~50%. It's good that you are getting 6.8V at 2500rpms, means that your EHA is functioning correctly. However, A fixed value of 70% at idle indicates....
The finger is pointed at the ECU....yet again.  |
I will swap it out tomorrow then *if* I can even get it started. This is one of those days I wish I'd slept right through. But a breakdown at my curb parking spot sure beats somewhere in the middle of traffic. This was a very odd shutdown. Started with the usual barely turn the key and away you go but within seconds - which only happened the one time before when the FPR gave up, the motor quit w/o warning - no sputter to a stop...just dead. As yet, not to start again since. Very confusing. All we did was clean switches, plugs etc. I took the ECU off the harness to look it over and put it back in. We've done nothing to warrant such a shutdown and as you've noticed the last few days have been rife with incidental problems. I can't imagine that anything we've done would have these drastic results. Do these OVP units (not just the fuse) give out and if they do would this cause a no-start? It all seems to be FPR, OVP and fuel pump related but I've got gas in the lines, and a fuel pump that energizes. I'll check for spark in daylight - assume gas and spark is all I need to at least get it started.
(or could a sensor come in between that happening assuming I did have gas and spark?) IOW, if it was you, how would you set out to step through what's wrong to at least get it to start tomorrow?
If it was the FPR you wouldn't hear it energize, the fuse in the OVP is fine but the unit did come from a parts car.
I'm ready to park it and pay the price to get the latest one I bought plated which will cost a bomb what with all that entails. This car has me down at this point.
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The microswitch referenced above is located near the throttle linkage. It's a little black box about the size of a matchbook. It's got a little roller on one end. It's primary use is on de-celleration. It tells the fuel injection to cut off fuel when you let off the gas pedal. It's worth looking at, but probably not the root cause of any of your major issues.
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And its located under the linkage toward the firewall then I'd presume?
Further back than the idle control sensor?