Ford Ranger Forum - Forums for Ford Ranger enthusiasts!

Go Back   Ford Ranger Forum - Forums for Ford Ranger enthusiasts! > > >
Forgot Password? Join Us!

Welcome to Ford Ranger Forum

Thread Tools Search this Thread

Old 02-10-2010, 07:30 PM
hwood2 hwood2 is offline
Learning to use the forums
Join Date: Feb 2010
Posts: 1
Default Alternator, battery, and now engines dies at cruising speed!

1989 Ford Ranger XLT 4x4 2.9L engine. Engine starts fine and runs fine most of the time. Drove son to school Moday morning about 17 miles on return trip died twice at cruising speed 70 mph on turnpike. All electrical off, oil pressure gauge bottomed, amp meter bottomed, check engine light on, battery light on. Depress clutch, and pop clutch engine truns over and runs as if nothing happened. Drove to shop when they opened they checked it and couldn't get it to do anything.

Background info: This vehicle has 65000 miles and went for 10 years with just being driven 4 to 5 times a year about year ago started driving it more and had to replace alternator and battery. I wrote this one off to not being driven. Alternator lasted about 4 months and started showing over charge of gauge so to it back to shop and they advised it was bad and replaced alternator and battery again that was in Dec. Drove to Kansas in Jan. and alternator quit again. The shop said it must have been overcharging until it burnt out, battery was low on liquid they charged and said it was still good.

I drove direct to shop this morning when I test drove it and it did the same thing once. Picked up mechanic and took him out and of course it didn't do it.

It seems that right before it acts up there is a momentarily sluggish before power shuts off.

Shop thinks it is either Ignition coil or ignition module, but does not know which one. My inlaws who own a shop in Kansas think it could also be battery cables corroded or a short somewhere.

I also forgot to say I checked battery today after return from shop. Battery voltage not running is 13.4v, without any load running is 14.3v, and with headlights on, heater fan on high, radio at loudest is 14.1v.

With the background of alternators it seems that these problems may be interconnected. Could bad cables burn up the alternators, which would damage batteries.

Or would ignition module in anyway affect either of the battery/alternator?

When first started after an incident it seems to idle a little slow and wants to die then something kicks in and idle goes up a little and seems to be normal again.

If any one can help I would appreciate you responses.
Reply With Quote
Old 02-10-2010, 08:12 PM
FireRanger FireRanger is offline
Blinded by the light
Join Date: Sep 2009
Posts: 7,674
Send a message via AIM to FireRanger

Doubtful this has anything to do with the alternator or battery. More likely a fuel or ignition problem.
2003 Edge 4.0 4wd

How to: Aux light wiring, relays, & fuses
Info: 300+ intake threads here on FRF
Info: HID Projectors
How To: NO HEAT Troubleshooting Guide
Reply With Quote
Old 02-10-2010, 10:11 PM
bigcountry bigcountry is offline
Ford Tough
Join Date: Jan 2010
Posts: 264

maybe but if the alternator keeps going out same with battery there either has to be a short somewhere or a bad cable. first off go to a different place to get an alternator next go to a different place and get a battery. either belt is why to tight which means the tensior could be bad. what i would is run the truck at nite and if there is a short somewhere you will most likely see it lots of sparking. i mean if it is fuel check fuel pressure and change fuel filter. thats about as much as i can help you. id be looking at battery connectors to see if there is alot of corrision if so clean them with some battery termnial cleaner. you can get it at your local auto parts store its made by CRC and it will neutralize battery acid.
Never tell people how to do things. Tell them what to do and they will surprise you with their ingenuity."
General Geroge S Patton
2007 3.0
automatic trans, 4.10s with L/S
ported and polished TB
4brand new speakers with inslation in doors
smoked tail lights
20%tint on driver and passenger windows
5% tint on back window
Reply With Quote

alternator, battery cables, ignition coil, ignition module

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
replaced alternator and battery... Still have issues Wicked46 Electrical Tech 5 01-24-2010 11:56 AM
what engines will fit into a 1985 ford ranger pickup? misseryman 8-Cylinder Tech 5 12-20-2009 09:38 PM
alternator, battery, and smell of something cooking! CMALI Electrical Tech 13 11-04-2009 11:25 AM
99 ford ranger wont start. new battery and had alternator checked twice (works).... pacifico t General Ford Ranger Discussion 5 10-22-2009 01:02 AM
What engines will directly repalace a 2003 4.0? FireRanger 4.0 SOHC / 4.0 OHV Tech 14 10-15-2009 02:24 PM