Intermittant 2.9 bogging - 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 07-30-2012
Member
Thread Starter
 
Join Date: Jul 2012
Location: southJersey, NJ
Posts: 4
Intermittant 2.9 bogging

I have a 89 2.9 ranger, 5 speed 9" lift, long arm the works.

I once cleaned the TB with carb cleaner only to find out that it was a bad idea and this issue started..

I have replaced the following:

TPS
IAC
FPR
FP
FF
MAP
O2
dist cap
wires
plugs (AWSF-42C) gapped to 0.044
air cleaner modified to cone filter on the stock rubber arm
TFI module tested good

Have no CEL now

What the truck does is while driving if you reach peak power in the rpms, the truck will bog. And I mean will act like your applying the brakes, and the motor will make a bogging noise. Once the pedal is released the truck will jump forward and be fine until you hit this rpm range again. Happens in all gears, and all temp ranges. Had a Fuel pressure gauge on the truck while driving and the FP will go from 40 to 10 or lower during the bog. If you keep your foot in it, while bogging it will back fire out the intake, obviously struggling for fuel.

Ive been driving it to work, everywhere, etc. and it acts up sometimes Ive have it start bogging and I turn the key off while moving and restart it and its fine for awhile. When it starts to act up the humming coming from the fuel pump is loud! I pulled the fp wire off when it was doing it once, let it die, then put the wires back on and started it, fine!

Could a blocked fuel return or evac line cause this sort of issue???

Or a ECTS, thinking its in warmup loop still...

Its just strange that sometimes when the key is turned off then back on its fine!...
Fuel pressure does drop during bog, and the fuel pump will start whinning a lot louder!

Did check the injectors for leaking, left the gauge hooked up to the shrader for about 5-10 mins and no drop in FP while off

Last edited by Dugan; 07-30-2012 at 02:00 PM.
Reply With Quote
  #2  
Old 07-31-2012
Member
Thread Starter
 
Join Date: Jul 2012
Location: southJersey, NJ
Posts: 4
Bump
Reply With Quote
  #3  
Old 08-03-2012
Member
Thread Starter
 
Join Date: Jul 2012
Location: southJersey, NJ
Posts: 4
TPS Testing:

Am I doing this right?


Black wire on ground and red on signal.

Reads .79 initial. and seems to go open once a certain point is reached. I tested the two TPS I have and the new brand new ones sitting on autozones shelf. Did the same thing.
Reply With Quote
  #4  
Old 08-03-2012
Member
Thread Starter
 
Join Date: Jul 2012
Location: southJersey, NJ
Posts: 4



.....
Attached Thumbnails
Intermittant 2.9 bogging-315407_10150994296795967_277115255_n.jpg  
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
'87 2.9 intermittant idle issues 06wing General Technical & Electrical 5 07-30-2011 09:13 AM
Intermittant No Start Problem weazoe General Technical & Electrical 0 10-23-2010 04:00 PM
Intermittant power gains. Hellion 2.3L & 2.5L I4 Tech 18 03-23-2008 02:15 PM
Bogging CroCop SOHC - 2.3L & 2.5L Lima Engines 8 02-20-2006 12:39 PM
Bogging down feeling PhilpotHunter 2.9L & 3.0L V6 Tech 5 10-07-2005 11:32 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 02:11 PM.


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.