wont start when cold
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=116553
Printed Date: May 02, 2024 at 1:02 PM
Topic: wont start when cold
Posted By: christopherrice
Subject: wont start when cold
Date Posted: September 26, 2009 at 12:11 PM
2008 Mercury Mountaineer with One way Astro-Start. Will not stay running when its cold outside. When its warm it has no trouble. When cold it runs for 20 seconds or so and shuts off. The brain has been replaced a few times with no luck. Could this be due to the secuirty bypass relays freezing? The only thing I could think of was relays. I have yet to figure out what was used for the install but thought Id see if anyone had any insight.
Replies:
Posted By: Reeceddogg
Date Posted: September 26, 2009 at 6:53 PM
Need to find out what bypass module was used.
Posted By: christopherrice
Date Posted: September 26, 2009 at 8:44 PM
Im digging into it more tomorrow. Ill get the RS model number and bypass module.
Posted By: t&t tech
Date Posted: September 27, 2009 at 2:58 PM
My bets are on it being a tach issue! Anyone else with me? ------------- COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Posted By: Steven Kephart
Date Posted: September 27, 2009 at 2:59 PM
t&t tech wrote:
My bets are on it being a tach issue! Anyone else with me?
I agree.
Try re-programming the tach at a higher RPM.
Posted By: christopherrice
Date Posted: September 27, 2009 at 5:16 PM
Not familiar with Astro-Start units. How is the tach programmed?
Posted By: KarTuneMan
Date Posted: September 27, 2009 at 9:44 PM
christopherrice wrote:
Not familiar with Astro-Start units. How is the tach programmed?
This statement tells me you did not do the install! Correct? I would take it back to the shop that did the work. Do you have an install guide for this unit? There are several install guides available on the 12volt. dip 1 5,6,7, up. Start the car, hit the foot brake... the unit will click and flash the LED on the brain. when it's done, put the dips down and hit the brake. shut the car off and attempt a remote start! -------------
Posted By: christopherrice
Date Posted: September 27, 2009 at 11:04 PM
Thank you. I did not do the install. Some crap shop did and gave up on fixing it after replacing the brain a few times. They wont cover it under warranty anymore and try to charge even when they dont do anyhing to fix it. Im actually no RS genious lol. Ive installed a Compustar once and am currently about to install 2 Viper systems. Im in need of serious help on those and havent got much for answers. So any help I get on this stuff is greatly appreciated. IdataLink instructions have got me all sorts of messed up, otherwise Im fine.
Posted By: jim hunter
Date Posted: September 27, 2009 at 11:38 PM
could be tach issue( these vehicles can just be tachless) or what type of bypass did they use for the secur-lok key? if they placed a key in a universal box i have seen issues with ford keys not liking to freeze!either try to insulate the key in the box module, or upgrade to a keyless interface (ala i-datalink)or if you can get a ford bypass(made by codesystems for ford dealers) it has the chip encased in a gel to protect from freezing , i have used these many times and never had a cold no start issue but i have had that when a key was placed in a universal bypass
Posted By: tommy...
Date Posted: September 28, 2009 at 1:31 AM
I have seen alot of problems with using the tach-less feature in cold climates...I would suggest seeing if there is even a tach connection...If not...Might be a good idea to hook up tach...
-------------
M.E.C.P & First-Class
Go slow and drink lots of water...Procrastinators' Unite...Tomorrow!
Posted By: t&t tech
Date Posted: September 28, 2009 at 8:14 PM
[QUOTE=jim hunter]could be tach issue( these vehicles can just be tachless) or what type of bypass did they use for the secur-lok key? if they placed a key in a universal box i have seen issues with ford keys not liking to freeze!either try to insulate the key in the box module, or upgrade to a keyless interface (ala i-datalink)or if you can get a ford bypass(made by codesystems for ford dealers) it has the chip encased in a gel to protect from freezing , i have used these many times and never had a cold no start issue but i have had that when a key was placed in a universal bypass[/QUOTE No bypass problem would allow a vehicle to start and run for twenty seconds! ------------- COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Posted By: jim hunter
Date Posted: September 28, 2009 at 8:50 PM
its also quite posible that it hasnt been exact timed,estmates of times are almost always spotty at best unless being actually timed,and i mentioned tach issue first, but the bypass interface is also another possibility for only a problem in cold weather
Posted By: t&t tech
Date Posted: September 29, 2009 at 8:42 PM
Either way, if a bypass was faulty, the engine should never turn over!
-------------
COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Posted By: KarTuneMan
Date Posted: September 30, 2009 at 12:48 AM
The Astro units will NOT do tachless. If you don't make the connection you'll get nuttin hunny.  -------------
Posted By: christopherrice
Date Posted: October 10, 2009 at 9:41 AM
For everyone that helped and anyone in the future with this problem... I fixed it last night. It WAS a tach issue. There are 2 different ways to get a tach signal, coil or injector. They had it on an injector and the RS kept sensing over-rev even though the tach was around 1k RPM at the time. I turned over-rev off on the RS and no more issues. For anyone that doesnt get that to work for them, try switching you tach signal source. Thanks again everyone.
|