Misfire bucking around 2800rpm - 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 09-15-2016
Member
Thread Starter
 
Join Date: Dec 2015
Location: Myrtle Beach
Posts: 9
Misfire bucking around 2800rpm

Need some help with my 2002 ranger 3.0 U code.I replaced the camshaft synchronizer today as it started to do that ugly chirping. I set #1 at tdc and used the alignment tool. Now my problem is when I accelerate and rpm gets around 2800 it bucks /hesitates till about 3000-3100rpm and no CEL on. Engine runs smooth other then that. Didnt have this problem prior. Hoping I can get pointed in the right direction.
Thanks in advance.
Reply With Quote
  #2  
Old 09-15-2016
Member
 
Join Date: Jul 2016
Location: BC Canada
Posts: 407
If you used the tool and you put the engine on TDC, it wasn't on compression.
#1 has to be at TDC and on compression, it's 180 degrees out.
This needs to be checked first at any rate to eliminate that possibility.
Reply With Quote
  #3  
Old 09-15-2016
Member
Thread Starter
 
Join Date: Dec 2015
Location: Myrtle Beach
Posts: 9
Quote:
Originally Posted by Jeff R 1 View Post
If you used the tool and you put the engine on TDC, it wasn't on compression.
#1 has to be at TDC and on compression, it's 180 degrees out.
This needs to be checked first at any rate to eliminate that possibility.
I put my thumb over #1 hole and had someone turn the key till I felt pressure and had them stop then turned the crank till piston was at top. Should I do it over again?
Reply With Quote
  #4  
Old 09-15-2016
Member
 
Join Date: Jul 2016
Location: BC Canada
Posts: 407
It sounds like you got it right.
TDC being at the "ZERO" mark, not the TDC words on the harmonic balancer.
At any rate it would be close enough.

I turned mine by hand with a compression tester.
Wouldn't turning the key and using the starter be a little difficult ???
Wouldn't it turn to fast to get it right ???

Facing the engine, #1 is on the left front side where the heater box is.
#1 being closest to the rad.
Reply With Quote
  #5  
Old 09-15-2016
Member
Thread Starter
 
Join Date: Dec 2015
Location: Myrtle Beach
Posts: 9
Quote:
Originally Posted by Jeff R 1 View Post
It sounds like you got it right.
TDC being at the "ZERO" mark, not the TDC words on the harmonic balancer.
At any rate it would be close enough.

I turned mine by hand with a compression tester.
Wouldn't turning the key and using the starter be a little difficult ???
Wouldn't it turn to fast to get it right ???

Facing the engine, #1 is on the left front side where the heater box is.
#1 being closest to the rad.
No "zero" or "tdc" only a small "mark" and the gap between the teeth..yeah turning by hand would be more precise and easier kinda brain dead back to back 20hr work days..
Reply With Quote
  #6  
Old 09-15-2016
Member
 
Join Date: Jul 2016
Location: BC Canada
Posts: 407
How-To: Replace Camshaft Position Sensor Synchro on 1999 3.0V

TDC is about 5 teeth past the one where there is no tooth.
You 2002 may have a different syncro, but the procedure is the same.
Reply With Quote
  #7  
Old 09-15-2016
Member
Thread Starter
 
Join Date: Dec 2015
Location: Myrtle Beach
Posts: 9
Quote:
Originally Posted by Jeff R 1 View Post
How-To: Replace Camshaft Position Sensor Synchro on 1999 3.0V

TDC is about 5 teeth past the one where there is no tooth.
You 2002 may have a different syncro, but the procedure is the same.
Thank you for all the help..will get back at it in the morning
Reply With Quote
  #8  
Old 09-16-2016
Member
Thread Starter
 
Join Date: Dec 2015
Location: Myrtle Beach
Posts: 9
[QUOTE=ChrisWit74;2110058]Thank you for all the help..will
Reply With Quote
  #9  
Old 09-16-2016
Member
Thread Starter
 
Join Date: Dec 2015
Location: Myrtle Beach
Posts: 9
Quote:
Originally Posted by ChrisWit74 View Post
Thank you for all the help..will get back at it in the morning
Again thank you for all the help you were right!! Running great now
Reply With Quote
  #10  
Old 09-16-2016
Member
 
Join Date: Jul 2016
Location: BC Canada
Posts: 407
I'm glad that was just the problem, sometimes something gets pulled off reaching back there to get at it.
Depending on how much you drive the truck, I just take the sensor off (with the plug still on) and squirt a bit of "Tri-Flow in there to keep it lubricated.
I do mine at least every 6 months, but it gets driven at least 3 days out of a 7 day work week.
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
engine misfire? bucking 48bronco 4.0L OHV & SOHC V6 Tech 3 12-03-2014 09:07 AM
4.0 skip/misfire/bucking OVERtheEDGE 4.0L OHV & SOHC V6 Tech 49 02-16-2009 08:31 AM
Bucking 2.5L ranger1998xlt SOHC - 2.3L & 2.5L Lima Engines 1 02-06-2007 12:35 PM
Running really bad-Stuttering-Bucking bmxrider379 4.0L OHV & SOHC V6 Tech 4 09-11-2006 07:04 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 On
Pingbacks are On
Refbacks are On



All times are GMT -6. The time now is 06:06 AM.