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96 RL crank no start

 
Old 04-28-2019, 07:20 AM
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Unhappy 96 RL crank no start

Hey All,
Have a 96 RL that I did some engine work to. Re-installed the engine harness and hooked it up incorrectly. Let the smoke out of the ECM and corrected the connections. received a used ECM and now have a crank no start issue. There is fuel and compresion but no spark. The immobilizer light does not come on when cranking but only after key is off. It flashes 5 times then goes out. Any help would be appreciated. Thanks.
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Old 04-29-2019, 08:33 AM
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The flashing of the immobilizer light five times is normal when shutting the car off. The only fix I have heard from the RL the community for the "crank but no start" issue has been the replacing of the PGM-FI relay.
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Old 04-29-2019, 10:30 AM
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The main relay has been tested and replaced. Getting gas but no spark.
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Old 04-29-2019, 11:34 AM
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Have you pulled the spark plugs to confirm no spark?

https://www.oemacuraparts.com/v-1996...n-coil-igniter


I'm not familiar with the older RL's but could it be an issue with this igniter unit ?
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Old 04-29-2019, 11:55 AM
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I currently have the coil out and the spark plug attached at the #4 cylinder and no spark. The ignition control module ohmís out ok and it along with the spark detection control module have been swapped out.
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Old 04-29-2019, 02:56 PM
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I am going to get a blank key cut and see if my immobilizer code will work. Not sure what else to try.
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Old 05-04-2019, 01:12 PM
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I had a blank key cut to the vehicle. Without the transponder key, there is no crank and the immobilizer icon blinks. So, not an immobilizer issue.
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Old 05-05-2019, 07:31 AM
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Have you checked the crank angle sensor? You said you had done some engine work, is it possible you have an issue with the timing belt?
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Old 05-05-2019, 02:29 PM
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The timing is on and the CKP/CYP ohms out good. I have battery voltage at the BLK/YEL wire at the #4 coil. But nothing at the WHT/BLU or BLK wires when cranking.
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Old 05-05-2019, 04:19 PM
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Just tested 2 of the coils and found open in coils from power BLK/YEL to BLK (spark voltage detection module) and open from WHT/BLU to BLK (spark voltage detection module). Going to get coils and test again.
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Old 05-11-2019, 06:44 PM
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Ok all, traced signal wires for all coils to the ECM and no ignition pulse to the coils. Checked my starter signal and P/N switch signal, both are good. I would condemn the ECM but have tried several with no change. What else tells the ECM to fire the coils?

Iím very frustrated. Thanks.
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Old 05-12-2019, 10:07 AM
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You said you received a "used" ECM and installed it, where did you get the replacement ECM? Was from a from another 96 RL? Was if from an aftermarket vendor that reprogrammed it for plug and play? I may be wrong but from what I read online the ECM is not "plug and play" but must be reprogrammed for your specific vehicle. It gets confusing researching this problem when it seems like ECM/ECU/PCM all seem to be interchangeable labels when discussing this issue online. I believe your no-start issue lies with the ECM (or PCM?) you are using. I have a link below that show the immobilizer system and the components involved in starting the vehicle. It shows the signal going to the PCM (ECM?) when starting. I believe the ECM (PCM?) is programmed to recognize the signal from the immobilizers control unit which enables it to start the car. I believe that replacing your ECM (PCM?) that hasn't been reprogrammed for your specific vehicle is the issue. I can't really think of any other reason for it not starting considering the exhaustive troubleshooting you have done on this problem. I hope this is of some help, and I haven't confused you even worse than where your at right now.

https://honda.oemdtc.com/237/informa...-1996-acura-rl
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Old 05-13-2019, 04:06 PM
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2000RL,
I took your advice and used my cut (non-transponder) key and used the emergency starting procedure for my VIN. It did not work after several attempts. One one attempt, I got the immobilizer icon to stay on solid after the key was turned off, but never 5 flashes. I am wondering if I get and ECM and immobilizer combo from a junkyard if it will work? Perhaps I need the brake code from the VIN that my replacement ECM is out of?
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Old 05-14-2019, 08:07 AM
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Minmar4life,
The Acura's ECM's are are VIN specific to the vehicle they are installed in and can't be swapped around. Below is a link for a vendor who can "reprogram" your ECM to work with the specific VIN number of your car. This link is just one of many places that perform this type of service so if you don't like their prices you can Google other business for a better price. At least you can call them an explain your situation and maybe they can resolve your problem, good luck!

https://moduleexperts.com/modules/acura-ecu-repair/
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