viper 5901 f150 remote start issue

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=112680
Printed Date: May 11, 2025 at 10:55 PM

Topic: viper 5901 f150 remote start issue

Posted By: way2qk4u2c
Subject: viper 5901 f150 remote start issue
Date Posted: March 26, 2009 at 8:26 AM

Alright everything has been working fine until now?

The problem im getting is strange. Every morning i get up and hit my remote start- about 8 out of 10 times the truck starts fine. The other 2 times the truck will start but within 2 sec of running it will shut down. It also doesnt seem to retry to start it (so its not a failed attempt) It seems like a trigger is shutting it down (brake wire, tach wire) I dont think its the immobilizer because it wouldnt even get to the running part for 2 sec.

I recently changed from virtual tach to tach. I have went through the process of learning the tach.

What i wonder is why is it intermittent?

Replies:

Posted By: Chris Luongo
Date Posted: March 26, 2009 at 9:17 AM

The unit should have some type of diagnostic mode, that tells you the reason for the last shutdown.

Go through the manual, get familiar with how the feature works, and then wait until next time it fails. Then it should tell you why.

Posted By: chadwa2003
Date Posted: March 26, 2009 at 9:42 AM

I had a 5900 installed on a 99 windstar which did that occasionally. It usually listed that it was over-rev protection kinda strange as it didn't matter the conditions I could start it inside a garage and it would shut down right away

Posted By: soundnsecurity
Date Posted: March 26, 2009 at 1:25 PM

check your hood pin and make sure it is not loose and touching ground with the vibrations from starting.

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Posted By: way2qk4u2c
Date Posted: April 04, 2009 at 3:30 PM

So i ran diagnostics on it

The reason why its shuting down is becaus eof over-rev (rpm)

The F150's have a big rpm jump when cold and when warmed up...how can i compensate for this or what is the proper way to learn the rpm (cold or warmed up)

Posted By: howie ll
Date Posted: April 04, 2009 at 4:32 PM

Very good question, I can never work out whether to let the revs drop to warm idle speed or rev to 1200 when programming tach, the answer would probably answer lots of FAQs here, perhaps Chris L. could give us the answer.