2005 f450 remote start problems

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=125289
Printed Date: May 03, 2025 at 6:08 PM

Topic: 2005 f450 remote start problems

Posted By: cdcconst
Subject: 2005 f450 remote start problems
Date Posted: December 28, 2010 at 1:12 AM

Any one have any suggetions? installed a Viper 5900sst on a 2005 F450 diesel and remote start attempt to start and shuts down with in 2 seconds, then attempts to restart. Cranking time is set to 4 seconds, with a 15 sec timer. If i rotate key switch to ignition position while rs is cranking engine starts. Tach wire is connected to lt.grn w/ red at cluster.

Any ideas?

Replies:

Posted By: Ween
Date Posted: December 28, 2010 at 9:47 AM

hi,

with the vehicle key turned to ignition while remote start is attempted, vehicle starts?...check your wiring at the ignition switch, something isn't powered up. the light GREEN/ red(s) i have at the instrument cluster are for the alternator and parking brake. tach is light GREEN / WHITE pigtail under dash behind fusebox.

mark

Posted By: zerepdivad
Date Posted: December 28, 2010 at 11:02 PM

sounds like you may have missed an ignition wire. what all did you hook up in your ignition harness?

Also often on these trucks it's best to use a 454t tach generator.

-------------
A DMM is a beautiful thing.

MECP Advanced Installer Certified.

Posted By: cdcconst
Date Posted: December 29, 2010 at 1:02 AM

Hello,

I was wrong i did connect the tach to a lt grn/ wht but at the cluster. This is a work truck and is pretty vanilla, i did not find any five wire harness with white tape behind the parking brake. So i attempted to follow the lt. gren / wht in the harness to the cluster. I did not check continuity though to verify ( i assumed) it was the same. The remaining wires i connected as follows.

12v red- yellow at ign harness

12v RED / wht- lt grn/ purple

ign pink- RED / lt. grn

2nd ign pink/ wht- RED / blk ( to feed aftermarket windows and doorlock controlled by alarm)

Acc orange- gray/ yellow

Tach - lt. grn/ wht at cluster

I am sure the ign wires are connected as when i go into programming mode the ign sense all works as well as when attempting to start with RS all instruments and acc are active. I am thinking i have the wrong tach sense. Would that cause this problem?

Posted By: cdcconst
Date Posted: December 29, 2010 at 1:05 AM

Also i installed the new Sony 770 double din navigation unit. It all seems to work fine with out the speed sense wire hooked up, where would i connect this wire and what function does it serve?