QuestionHello,
I do not have any spark. I have plenty of fuel pressure.
The car was running great, I parked it for the night and when I tried to start it the next morning it cranked over fine but did not start.
* I verified that I have great fuel pressure at the fuel rail.
* I pulled #2 plug and inserted it back into the boot and had the engine cranked while I grounded the plug to a intake plenum bolt. NO SPARK...
* I have replaced the cap, rotor, plugs, wires, and distributor.
* I measure +10.4vDc on the green/ orange coil primary wire (this is the single wire in the two position plug at the dist.) while cranking the engine over. The battery voltage is +12.4vDc.
* I don't have a check engine light lit up on the dash, or anything of the sort.
* I have checked the engine control module for bent pins (none found).
* I have removed every fuse and relay in the small under the hood fuse/ breaker panel, cleaned the contacts and re-installed them. All of the fuses tested fine with my Digital Multi-Meter.
I would really appreciate any help you could offer.
Thank you!
AnswerHi Haystack,
The only thing you haven't done is test for whether the engine controller has detected the problem. The best way to get a clue is to try a readout for fault codes stored in the engine controller memory. Turn the ignition switch:"on-off-on-off-on and leave on" doing that in 5 seconds or less elapsed time. Then watch the "check engine" light, that remains on, to begin to flash, pause, flash, etc. Count the number of flashes before each pause. Then repeat to be sure you have an accurate count. Let me know the count results in the order that they appeared and we can go from there. I suspect that your cam sensor has failed which would set a code.
Use the "thank/rate" tab below for immediate access to me rather than waiting for me to be available to take another question. There is a comments section where you can tell me the count results.
You have done a good job looking for the cause and I appreciate your detailed history of that effort.
Roland
Hi Roland' Here are the results: 1_2__1__1__5_5 I hope this helps. Thanks again!
Hi Haystack,
That is it! The 12 means the battery was disconnected recently, so that is not remarkable. The 55 means "end of readout" which just confirms that the readout was successful.
But the 11 means your crank sensor signal is missing, very likely due to a failed sensor. It is located on the transaxle side of the seam between it and the engine, just below the distributor. You will get it out more easily if you remove the speed control servo from the strut tower. It has a 3-wire plug (orange/white is 5V supply, black/light blue is signal ground, and gray/black is the signal). You can verify it isn't working by measuring whether the voltage pulses about a dozen times per revolution, between 5V and 0.3 V, as you turn the engine over by hand using the crank pulley bolt to turn it and with the ignition in the "run" position. But you don't need to do that, just buy a new sensor, unless you think there is a problem with a wire.
It will come with a paper spacer on its tip which is 'sacrificial' in that you press the paper covered tip against the edge of the flex plate inside the trans, then secure the sensor in that position via the bolt (105 inch-pounds to hold it in place). Then when the engine turns it wears away the paper but leaves the tip close to but not touching the surface of the flex plate. Then remount the servo control. And start it up.
Roland
PS Thanks for the nomination.
