Need help, 3.0 acting really bad - Ranger-Forums - The Ultimate Ford Ranger Resource


2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 09-18-2010
korey89's Avatar
Member
Thread Starter
iTrader: (2)
 
Join Date: Mar 2008
Location: South, FL
Posts: 4,672
Need help, 3.0 acting really bad

My truck hasn't always had the smoothest idle but I figured that was just the 3.0 and lived with it. Today I drove the truck for a second to my friends house a minute away and then stopped in front of his house and was idling for a minute and all of the sudden the truck just started shaking really badly, so I shut it off and went and did some stuff for a few hours. Came back and the truck hesitated to start a little and was shaking again when I started it. It goes away above like 1200ish RPM when I rev it. Drove the truck back home and it was acting REALLY weird. Still shaking and didn't want to rev so I just went like 15mph driving it. Pulled in and the exhaust was crackling like crazy, I've never heard it do it that much before. Checked for vacuum leaks and didn't find any, checked out the lower manifold bolts and then were torqued to spec. I really have no idea whats wrong but I need to drive my truck to school and stuff.

This really all started a while back after washing my engine one time. The coil pack was cracked and got water in it so it was really bad. I replaced it with a screamin demon one and it made it normal again other than when I would park the truck after driving and get back in and drive it after a few minutes I found that it would sputter for a second at first sometimes randomly. I have no idea what to do. The only thing I can think of would maybe be a cat or cats clogged somehow? But what gets me is how the truck was idling just fine and then like someone flipped a switch and started idling horribly. I drove the truck last night too and it was fine.
Reply With Quote
  #2  
Old 09-18-2010
Sonic04Edge's Avatar
RF Veteran

iTrader: (6)
 
Join Date: Jun 2004
Location: Madison. AL
Posts: 5,715
My 3.0 did the same. Started missing so I replaced plugs/wires and that helped for about 6 months. Then my truck went to all hell. Replaced the coilpack because it wasn't sparking on cyl1. Got better for 2 weeks then I repalced the plugs and wires again and now it seems okay. Did you only change the coilpack? If that was the issue and it ran like that for a while. Could be bad plugs now. I'd just replace the plugs and wires to be safe.
Reply With Quote
  #3  
Old 09-18-2010
djfllmn's Avatar
Moderator
 
Join Date: Mar 2009
Location: York, PA
Posts: 5,796
is your CEL on too...sounds like a multiple cylinder misfire to me
Reply With Quote
  #4  
Old 09-18-2010
Member
 
Join Date: Mar 2007
Location: Upstate,NY
Posts: 2,598
Check the plugs for a cracked insulator.
Pull each one and look very closely.
Reply With Quote
  #5  
Old 09-18-2010
korey89's Avatar
Member
Thread Starter
iTrader: (2)
 
Join Date: Mar 2008
Location: South, FL
Posts: 4,672
I did the wires too, screamin demon coil and wires. I was actually just outside messing with it some more and when I disconnect the two furthest back wires on the coil it doesn't change the trucks RPM or anything and it isn't firing on them. All four of the other ones will have an arc that you can see jump from the coil to the wire when you disconnect them while the truck is running. The back two nothing happens, so I guess the coil is bad? It's only like 3-4 months old too. Gonna go pull the plugs out from those cylinders to see what they look like.


No CEL's
Reply With Quote
  #6  
Old 09-18-2010
87xlt's Avatar
Member
 
Join Date: Jun 2008
Location: In my truck!
Posts: 875
New parts go bad to man it shouldn't be that way but thats just how things are made these days...
Reply With Quote
  #7  
Old 09-18-2010
korey89's Avatar
Member
Thread Starter
iTrader: (2)
 
Join Date: Mar 2008
Location: South, FL
Posts: 4,672
Yeah, hopefully its got a warranty.
Reply With Quote
  #8  
Old 09-18-2010
bigandrw's Avatar
Member
iTrader: (7)
 
Join Date: Jun 2010
Location: Houston, Texas
Posts: 1,407
korey i just changed my plugs wires and threw in an sd pack also and when i fired it up it idled for a bit and then shut off ...so i cranked it back up and come to find out it was the maf sensor...wasnt regulating the air properly so it was giving it to much and making it idle funny...did yours have a little lope in it when it was shaking?
Reply With Quote
  #9  
Old 09-18-2010
Sonic04Edge's Avatar
RF Veteran

iTrader: (6)
 
Join Date: Jun 2004
Location: Madison. AL
Posts: 5,715
Quote:
Originally Posted by korey89 View Post
I did the wires too, screamin demon coil and wires. I was actually just outside messing with it some more and when I disconnect the two furthest back wires on the coil it doesn't change the trucks RPM or anything and it isn't firing on them. All four of the other ones will have an arc that you can see jump from the coil to the wire when you disconnect them while the truck is running. The back two nothing happens, so I guess the coil is bad? It's only like 3-4 months old too. Gonna go pull the plugs out from those cylinders to see what they look like.


No CEL's
I'm surprised you have no CEL's. My threw codes like it was at mardi gras throwing beads lol. Best bet is to just replace it all. Coilpack, wires and plugs. It has probably cause some other plugs to go bad in the mean while.
Reply With Quote
  #10  
Old 09-18-2010
djfllmn's Avatar
Moderator
 
Join Date: Mar 2009
Location: York, PA
Posts: 5,796
yea that surprises me too...especially if its misfiring like that...that usually will cause a CEL to start flashing
Reply With Quote
  #11  
Old 09-18-2010
ccosgrove71's Avatar
Member
 
Join Date: Jun 2010
Location: richmond,va
Posts: 185
an injector can cause a miss also.
Reply With Quote
  #12  
Old 09-19-2010
Conroman's Avatar
Member
 
Join Date: Jun 2010
Location: Springfield, MO
Posts: 140
I'm having a similar issue, but mine starts and them immediately dies, unless you floor it, but then it is just on the brink of dying but just barely keeps going. And it sputters really bad, and at first there was a smell of exhaust in the engine compartment. this happened right after i put on my 3" body lift today. I'm about to clean my MAF and maybe that could be it, I have a vacuum leak, and a hole in my intake, but both are being temporarily held with electrical tape, until my new intake tube, and vacuum hose grommet get here. any ideas? i really need this to be running by tomorrow, or I can't drive to school, and i really need to be there tomorrow.
Reply With Quote
  #13  
Old 09-20-2010
SkidPlate's Avatar
Member
 
Join Date: Sep 2010
Location: La Crete , Alberta
Posts: 43
Quote:
Originally Posted by ccosgrove71 View Post
an injector can cause a miss also.
Here are some good vids that show how to diagnose them.

YouTube - realfixesrealfast's Channel

YouTube - realfixesrealfast's Channel

One of the best channels on YT.
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
i need help really bad! 00RedRangerXLT Auto Detailing 101 9 06-17-2013 11:11 AM
ALL offroaders are BAD BAD BAD! FMD General Ford Ranger Discussion 13 04-25-2006 08:21 AM
really really bad day... f2b General Ford Ranger Discussion 7 05-26-2005 05:17 PM
Really, Really need to know what year AC Compressors fit!! serialkiller General Technical & Electrical 2 06-01-2004 11:27 AM


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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -6. The time now is 05:10 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.