Question3.5 v6 chrysler eagle 1995
No spark.
Is igniton module located inside ECU?
AnswerYes the control for the ignition coil pack is centered in the ECU (also called the powertrain control module, PCM). If you have no spark, however, it may be due to the failure of one of the sensors for the crank or cam shaft position. If one of those is not putting out its signal, then the ECU will depower the relay that provides power to the coil pack for fire safety reasons. This would show up as a troble code on the on-board diagnostic capability of the ECU. If you haven't tried to get the trouble code readout here is the procedure:
Try using the ignition key: turn it "on-off-on-off-on" and leave it "on" (doing this quickly, no longer than 5 seconds). By "on" I mean just the normal position when the engine is running, not the cranking position. The 'check engine'light will remain on when you leave the key in the "on" position with the engine still not running. But then watch the 'check engine' light to begin flashing, then pause, flashing, pause, etc. Count the number of flashes before each pause and keep track of the numbers. Repeat the readout and verify the counts are correct. Then group them in pairs in the order that they came out, thus forming two digit numbers. You may notice that the pause is shorter between the digits of a given number, and longer between the numbers themselves. Then send me a 'follow-up' question telling me the results of your readout. By the way, 55 will be the last number (two groups of 5 flashes each) and that is the code for "end of readout".
There is an essay on fault codes at the site:
http://www.allpar.com/fix/codes.html
which gives the meaning of the code numbers. But then you need to get specific info for what exactly might be the diagnostic tests or parts to replace to complete the repair. Let me know what happens with code readout and how I might be of help in moving ahead once you have the codes.
Roland
