Slow crank - Ford Truck Enthusiasts Forums



1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Slow crank

Reply
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 01-06-2012, 02:13 PM
rangergirl94's Avatar
rangergirl94 rangergirl94 is offline
Elder User
Thread Starter
 
Join Date: Dec 2010
Location: Geneva,Ohio
Posts: 656
rangergirl94 is starting off with a positive reputation.
Slow crank

I have a 93 f150 4.9 I replaced starter,batt,cleaned connections it cranks slow sometimes gotta jump it to start it also replaced battery terminals any help please?
Reply With Quote
  #2  
Old 01-06-2012, 03:21 PM
subford's Avatar
subford subford is offline
Post Fiend
 
Join Date: Aug 2005
Location: Easton,Ks
Posts: 19,798
subford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud of
You need to check the voltage at the battery posts while the engine is running. Should be around 13.6 - 14 VDC.
Sounds like a low battery charge.
Reply With Quote
  #3  
Old 01-06-2012, 03:58 PM
rangergirl94's Avatar
rangergirl94 rangergirl94 is offline
Elder User
Thread Starter
 
Join Date: Dec 2010
Location: Geneva,Ohio
Posts: 656
rangergirl94 is starting off with a positive reputation.
I took the battery out and put in another truck it cranks fine just wont crank mine?
Reply With Quote
  #4  
Old 01-09-2012, 04:33 PM
rangergirl94's Avatar
rangergirl94 rangergirl94 is offline
Elder User
Thread Starter
 
Join Date: Dec 2010
Location: Geneva,Ohio
Posts: 656
rangergirl94 is starting off with a positive reputation.
Its cranks fast and starts fine if its cold if its warm it cranks very slow??
Reply With Quote
  #5  
Old 01-09-2012, 05:13 PM
mpc07005's Avatar
mpc07005 mpc07005 is offline
Senior User
 
Join Date: Jun 2011
Location: Milford, CT
Posts: 383
mpc07005 is starting off with a positive reputation.
What was the other truck? Still check with a multimeter. By cold do you mean a cold day or motor (I'm assuming cold motor, but thought I'd check)? Is it taking a long time to start or turning over slowly (turning slow implies a longer start duration)? Try swapping another battery in, and see if it still cranks slow. Engines should be easier to turn when warm, not cold. What's the oil like? I'll try to think of what would cause that (only thing that comes to mind is a very overzealous injector, but there are no other apparent symptoms).
-Mike
Reply With Quote
  #6  
Old 01-09-2012, 06:57 PM
rangergirl94's Avatar
rangergirl94 rangergirl94 is offline
Elder User
Thread Starter
 
Join Date: Dec 2010
Location: Geneva,Ohio
Posts: 656
rangergirl94 is starting off with a positive reputation.
Ive changed the battery and yes cold motor changeed starter and batt terminals cleaned all connections ? Short somewhere maybe but wouldnt it do it cold or warm?
Reply With Quote
  #7  
Old 01-09-2012, 08:21 PM
88n94 88n94 is online now
Posting Guru
 
Join Date: Jan 2004
Location: South Dakota
Posts: 1,679
88n94 is gaining momentum as a positive member of FTE.
I would take a remote starter switch and hook it direct to the starter. ie one terminal of the remote starter switch on the large battery cable terminal and one terminal on the small electrical bolt. You could do the same thing by taking a screwdriver and connecting those two terminals, but this would be safer. That would bypass a lot of stuff. Just for troubleshooting of course. Do you have a manual or an automatic transmission?
Reply With Quote
  #8  
Old 01-09-2012, 09:11 PM
rla2005's Avatar
rla2005 rla2005 is online now
Post Fiend
 
Join Date: Oct 2005
Location: Illinois
Posts: 12,151
rla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud of
Which "connections" did you clean? A poor ground connection at the block can manifest itself as you have described. Sometimes a battery cable will develop corrosion under the insulation. Something else to look for.
Reply With Quote
  #9  
Old 01-09-2012, 09:20 PM
73'360f100's Avatar
73'360f100 73'360f100 is offline
Senior User
 
Join Date: Jan 2009
Location: Newnan,Ga
Posts: 183
73'360f100 is starting off with a positive reputation.
I would redo all of your grounds with some good quality welding cable. Bad grounds can cause slow starting and I can almost guarantee that you could use new grounds.
Reply With Quote
  #10  
Old 01-09-2012, 10:24 PM
rangergirl94's Avatar
rangergirl94 rangergirl94 is offline
Elder User
Thread Starter
 
Join Date: Dec 2010
Location: Geneva,Ohio
Posts: 656
rangergirl94 is starting off with a positive reputation.
Ill try new grounds I put a new one from neg batt post to fender and also crossed the screwdriver trick still nothing
Reply With Quote
  #11  
Old 01-10-2012, 08:43 AM
rla2005's Avatar
rla2005 rla2005 is online now
Post Fiend
 
Join Date: Oct 2005
Location: Illinois
Posts: 12,151
rla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud of
You need to focus on the ground from the battery to the engine block.
Reply With Quote
  #12  
Old 01-10-2012, 03:39 PM
rangergirl94's Avatar
rangergirl94 rangergirl94 is offline
Elder User
Thread Starter
 
Join Date: Dec 2010
Location: Geneva,Ohio
Posts: 656
rangergirl94 is starting off with a positive reputation.
The neg cable runs to the starter?
Reply With Quote
  #13  
Old 01-10-2012, 04:01 PM
rla2005's Avatar
rla2005 rla2005 is online now
Post Fiend
 
Join Date: Oct 2005
Location: Illinois
Posts: 12,151
rla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud of
The negative cable runs to the engine block, not the starter. Your truck may or may not have the extra tab that also connects to the frame.

Take a look at Post #9 in this thread: http://www.ford-trucks.com/forums/10...ml#post9965674

Bill has some great photos of where the grounds are.
Reply With Quote
  #14  
Old 01-10-2012, 04:36 PM
rangergirl94's Avatar
rangergirl94 rangergirl94 is offline
Elder User
Thread Starter
 
Join Date: Dec 2010
Location: Geneva,Ohio
Posts: 656
rangergirl94 is starting off with a positive reputation.
None of my trucks have an engine ground all go to the bottom starter bolt its i6 not v8
Reply With Quote
  #15  
Old 01-10-2012, 05:41 PM
andym's Avatar
andym andym is offline
Post Fiend
 
Join Date: Mar 2002
Location: Where the road leads, USA
Posts: 17,137
andym has a superb reputationandym has a superb reputationandym has a superb reputationandym has a superb reputationandym has a superb reputationandym has a superb reputationandym has a superb reputationandym has a superb reputationandym has a superb reputationandym has a superb reputationandym has a superb reputation
Quote:
Originally Posted by rangergirl94 View Post
Ill try new grounds I put a new one from neg batt post to fender and also crossed the screwdriver trick still nothing
You did what? The negative cable runs from the battery to the starter bolt. The positive cable runs from the battery to the relay to the starter.

Also, when you say you put a new ground on, what exactly did you replace? Just the end of the cable? I have had terrible luck with just the ends. Replace the whole cable with a one-piece molded cable. They work much better.

I really think that your battery cables are shot. It's a common problem on older vehicles. The cable insulation dries out, cracks and deteriorates. This lets water in which corrodes the cables are reduces their current-carrying capacity.

You've replaced everything else. Spend $20 and put new cables on it - the thickest ones you can find - and I bet your problem goes away.

One other thing - what's your base timing set to?
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
4.9 slow crank lost help asap Hatchdemon89 1987 - 1996 F150 & Larger F-Series Trucks 8 11-02-2016 11:26 PM
78 351M having issues starting max burroughs 1978 - 1996 Big Bronco 6 11-02-2014 05:33 PM
slow crank mknapik Pre-Power Stroke Diesel (7.3L IDI & 6.9L) 6 01-17-2014 02:21 PM
Slow cranking starter mabc926 Pre-Power Stroke Diesel (7.3L IDI & 6.9L) 6 10-03-2010 04:06 PM
460 cranks slow when warm starting PPrash 1987 - 1996 F150 & Larger F-Series Trucks 1 01-14-2010 09:29 PM


Go Back   Ford Truck Enthusiasts Forums >

Tags
1986, 1992, 1994, 2000, 58l, 73, 94, battery, crank, cranking, cranks, expedition, f150, f250, ford, good, slow

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump


All times are GMT -5. The time now is 03:42 PM.


This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.