I have an issue. Approximately 30 minutes to an hour into driving my 94 camaro the stock computer throws a trouble code (Intermittent Ignition Signal & Loss of 3xREf) and the tranny goes into limp mode not shifting out of 1st. I doubled over all the wiring and it looks good.
I haven't replaced either ignition sensor yet, they are the originals. While I know this would be the logical yet not exactly easy thing to do is there any better way to test the sensors. The car starts and runs fine otherwise. Megatune shows good signal all the way through. I heard somewhere that weak sensors fail when heated up?
I have been running new msd coils for 5 years now, could a bed coil be causing this to happen since all of the wiring looks good for MS? This issue never began happening until after I began controlling spark.
Any help would be appreciated.
Loss of 3x signal
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0). For tuning/troubleshooting questions, please attached a datalog and your MSQ file to your post.
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
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Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: Loss of 3x signal
Is the 3X signal shared between the stock ECU and the MegaSquirt?
Before you were controlling spark, was the MegaSquirt getting its RPM input from a different source or was it wired the same way it is now?
Before you were controlling spark, was the MegaSquirt getting its RPM input from a different source or was it wired the same way it is now?
