engine cranking requirements | Ford Explorer - Ford Ranger Forums - Serious Explorations

  • Register Today It's free! This box and some ads will disappear once registered!

  • Holiday Special! - 2 for 1 Elite Explorer sale!

    Right now you can purchase an Elite Explorer membership for $20 and receive a two year membership! If you have an existing Elite membership contact me by PM and I will upgrade your account manually.

    Click Here to start your membership and get rid of the ads!

engine cranking requirements

jgilbs

Elite Explorer
Joined
October 29, 2002
Messages
1,201
Reaction score
1
City, State
Naperville, IL(home)/Iowa City, IA(school)
Year, Model & Trim Level
92 Eddie Bauer
I was going to add an auxiliary battery to be used in emergencies soley for starting the vehicle. does anyone know the power requirement required to start the truck (power used by fuel pump, ignition, PCM, starter etc) so I can choose the smallest battery that will work.
 


Holiday Special! Join the Elite Explorers $20 for 2 years! Gets rid of the ads!

Elite Explorer members see no advertisements, no banner ads, no double underlined links, can add their own profile photo, upload photo attachments in all forums, and Media Gallery, create and save more private conversations, and more. Join Today. Your support is greatly appreciated.








jgilbs

Elite Explorer
Joined
October 29, 2002
Messages
1,201
Reaction score
1
City, State
Naperville, IL(home)/Iowa City, IA(school)
Year, Model & Trim Level
92 Eddie Bauer
those things are crap. you have to make sure they stay charged and they take a while to charge up the battery IF the jumpstart thing itself has anycharge. I want something thats basically i dont have to do anything to it until i need it. I'd use a solenoid to keep it charged off of the charging system, but disconnected when the truck is off (but i would still charge it via the shoreline just like the normal battery) so it should be worry free until i need it to start the car. i saw batteries at napa for like $10, and it gave me the idea, especially if i can do it so cheap. also, with a secondarybattery it would be isolated from the primary battery, and thus it wouldnt be charging it. this means that all of its current would go towards starting the engine whereas the portable jumpstart things use all of their current charging the battery which takes time.
 




Brock94

Well-Known Member
Joined
July 2, 2004
Messages
554
Reaction score
1
City, State
Milford, CT
Year, Model & Trim Level
1994 XLT
jgilbs said:
those things are crap. you have to make sure they stay charged and they take a while to charge up the battery IF the jumpstart thing itself has anycharge. I want something thats basically i dont have to do anything to it until i need it. I'd use a solenoid to keep it charged off of the charging system, but disconnected when the truck is off (but i would still charge it via the shoreline just like the normal battery) so it should be worry free until i need it to start the car. i saw batteries at napa for like $10, and it gave me the idea, especially if i can do it so cheap. also, with a secondarybattery it would be isolated from the primary battery, and thus it wouldnt be charging it. this means that all of its current would go towards starting the engine whereas the portable jumpstart things use all of their current charging the battery which takes time.

I guess it depends what portable jump-start thing you have, mine started a 5.2L V8 at -20F when the truck had a totally dead battery after sitting out all night-- no need to wait for it to charge the dead battery. Maybe you should find out what size battery is in the portable jump starters and start there.

It's true that you have to keep the thing charged, but I've found that mine holds its charge for a long time and has the advantage that you can bring it inside in cold weather so it has full power when you go to start your vehicle. Some of them also have an emergency light and even a small inverter so you can use them for emergency power. I think I paid about $60 for mine at BJ's.
 




Maniak

Moderator-Stock 91-94
Elite Explorer
Moderator Emeritus
Joined
February 9, 1999
Messages
12,084
Reaction score
122
City, State
Vail, Arizona
Year, Model & Trim Level
1992 XLT 4x4
This is the kind I have (I have this one and some similar)..

http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=40615

It has started many vehicles (I think I jump started the X 6 times on a single charge).. The only time it could not start the truck is when the truck battery had a shorted cell.

It has a 24 ah (amp hour) battery in it (my smaller jumper box has a 20 ah battery) . You could put in a 12V 24 Ah battery on an isolator and use that. I like having the jumper box so if somone needs a jump I just grab the box, hook it up and start the truck/car.

~Mark
 




jgilbs

Elite Explorer
Joined
October 29, 2002
Messages
1,201
Reaction score
1
City, State
Naperville, IL(home)/Iowa City, IA(school)
Year, Model & Trim Level
92 Eddie Bauer
well with my car its just as easy to jump someone else. i have a heavy duty disconnect on my front bumper that is fused and wired to my battery(http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=263-115) and i also have the connector on the end of a pair of jumper cables so all i do is pull up next to or behind the disabled vehicle(they are really long cables), connect the clamps to the disabled vehicle, start my high idle and plug the other end into my truck. works great. i just want a spare battery in case for some reason i drain my battery and i dont have access to a shoreline(i have an onboard battery charger)
 




CDW6212R

Hauls the mail.
Elite Explorer
Joined
June 17, 2004
Messages
22,231
Reaction score
2,615
City, State
Knoxville, TN
Year, Model & Trim Level
98 Limited AWD
If you really want that, why not look at the space just in front of the fuel tank. I believe that there is enough room there to mount a second battery. Unless you need to save weight, I'd install the largest battery there which is feasible. Install an isolator, and both batteries will be charging at all times. Good luck,
Don
 




Top