I'm completely lost - Ranger-Forums - The Ultimate Ford Ranger Resource


SOHC - 2.3L & 2.5L Lima Engines Discussions and Topics specific to the Lima 4 cylinder engines

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 12-05-2008
Trigger_Happy's Avatar
Member
Thread Starter
 
Join Date: Sep 2008
Location: Douglass, KS
Posts: 92
I'm completely lost

Ok, I have a 1991 ranger 2.3l with the 5spd and i only get 14.8 mpg at the most. I have ran seafoam through it, replaced all 8 spark plugs and plug wires, cleaned up the mass air flow sensor, put in a new idler, did a cylinder leak down test(i got 80% leakage on cylinder 3) and ran a diagnostics test. on that i got a code 63 which had something to do with wires that plug into a sensor in the intake, but i cant get to it inless i take off the intake manifold. other than poor fuel milage the truck runs good aside from the ocassional sputtering when accelarating and when i first start it, it goes back and forth between 700rpm to 1200. Any ideas on what might be going on?
Reply With Quote
  #2  
Old 12-05-2008
cchsbuzz19's Avatar
Member
iTrader: (5)
 
Join Date: Jul 2007
Location: North Canton, Ohio
Posts: 2,417
Have you replaced all the filters such as fuel, air. your 02 sensors could be bad. Don't feel bad about your mpg I think I still hold the worst mpg on this site 10.7 mpg.
Reply With Quote
  #3  
Old 12-05-2008
Member
 
Join Date: Mar 2007
Location: Upstate,NY
Posts: 2,598
Dirty/worn injectors
Old/streched timing belt and tensioner
Weak valve springs
Bad fuel pressure regulator

Have you tried disconnecting the battery cable for 15-20 minutes to let the ECM relearn its settings ?
Reply With Quote
  #4  
Old 12-05-2008
Trigger_Happy's Avatar
Member
Thread Starter
 
Join Date: Sep 2008
Location: Douglass, KS
Posts: 92
Quote:
Originally Posted by cchsbuzz19 View Post
Have you replaced all the filters such as fuel, air. your 02 sensors could be bad. Don't feel bad about your mpg I think I still hold the worst mpg on this site 10.7 mpg.
I replaced my air filter but not the fuel, The o2 sensor is the one thats fried onto the exhaust, right? 10.7!? how are you getting that? i guess my big concern is im scared of there being a bigger problem(3rd cylinder) and i want to try and catch it before it gets worse

Quote:
Originally Posted by OTRtech View Post
Dirty/worn injectors
Old/streched timing belt and tensioner
Weak valve springs
Bad fuel pressure regulator

Have you tried disconnecting the battery cable for 15-20 minutes to let the ECM relearn its settings ?
I didnt think of any of those, i have had my battery disconected though


Thanks for the help guys.
Reply With Quote
  #5  
Old 12-05-2008
john93rangerstx's Avatar
Member
 
Join Date: Mar 2008
Location: WARWICK RI
Posts: 895
try some restore it should help the comprisen problem you have i have used it on all my car and it help
Reply With Quote
  #6  
Old 12-05-2008
Trigger_Happy's Avatar
Member
Thread Starter
 
Join Date: Sep 2008
Location: Douglass, KS
Posts: 92
do you run restore through your fuel tank or straight through the injectors on the common rail?
Reply With Quote
  #7  
Old 12-05-2008
Trigger_Happy's Avatar
Member
Thread Starter
 
Join Date: Sep 2008
Location: Douglass, KS
Posts: 92
nevermind, found there website. thanks
Reply With Quote
  #8  
Old 12-05-2008
john93rangerstx's Avatar
Member
 
Join Date: Mar 2008
Location: WARWICK RI
Posts: 895
for under 10 buck it worth a try and put it in your oil
Reply With Quote
  #9  
Old 12-05-2008
Member
 
Join Date: Mar 2007
Location: Upstate,NY
Posts: 2,598
Restore will only mask the problem , not cure it.
Reply With Quote
  #10  
Old 12-05-2008
Trigger_Happy's Avatar
Member
Thread Starter
 
Join Date: Sep 2008
Location: Douglass, KS
Posts: 92
well i had a buddy pick up a can for me already so ill see what it does, i hooked up that scanner to my truck again about an hour ago and found out i need a new throttle body sensor
Reply With Quote
  #11  
Old 12-05-2008
Member
 
Join Date: Nov 2005
Location: Elizabeth City, NC
Posts: 767
http://www.fordfuelinjection.com/?p=30 says:

"The TPS sensor has a great deal of influence on the fuel ratios and timing curves, because the TPS is a user interface sensor. The TPS is the closest thing you have to a phone call into EEC."

Replace yours. Your gas mileage should improve.

The hunting idle could be a bad IAC. Clean it or replace it. When you have it off, look at the gasket. Many have improved their idle by making a new gasket with a smaller hole.

It sounds like your IAC isn't working. If you disconnect its electrical connector with the engine running, the idle should change. If nothing changes, it isn't working. Could also have a vaccum leak affecting idle and MPG. Spray carb cleaner around the intake, vaccum hoses/connections (including brake booster line) and listen for idle changes.

Last edited by Earl43P; 12-05-2008 at 03:02 PM.
Reply With Quote
  #12  
Old 12-05-2008
Trigger_Happy's Avatar
Member
Thread Starter
 
Join Date: Sep 2008
Location: Douglass, KS
Posts: 92
Thanks alot guys, I was really lost on all this. i did do a test for vaccum leak though and it was good, ill look up the iac tonight and i was planning on getteing the tps tomorrow while im at autozone. ill be sure to post back once i have replaced it all. thanks again
Reply With Quote
  #13  
Old 12-06-2008
Shaklakan's Avatar
Member
 
Join Date: Jan 2008
Location: La Habra CA
Posts: 1,100
Quote:
Originally Posted by cchsbuzz19 View Post
Have you replaced all the filters such as fuel, air. your 02 sensors could be bad. Don't feel bad about your mpg I think I still hold the worst mpg on this site 10.7 mpg.
nope i get around 8-9 mpg!
Reply With Quote
  #14  
Old 12-06-2008
cchsbuzz19's Avatar
Member
iTrader: (5)
 
Join Date: Jul 2007
Location: North Canton, Ohio
Posts: 2,417
Quote:
Originally Posted by Shaklakan View Post
nope i get around 8-9 mpg!
dang. well never mind I guess I don't have the worst mpg on R-F
Reply With Quote
  #15  
Old 12-11-2008
Trigger_Happy's Avatar
Member
Thread Starter
 
Join Date: Sep 2008
Location: Douglass, KS
Posts: 92
Ok, i bought a new TPS, and had already put a new IAC on it when i got it, but it didnt do anything. So i put it back on the scanner, did a Key On Engine Running test, and found out something was going on with the EGR. I pulled it off, and chipped off a nice thick layer of carbon. after that i rigged up a manual vacume system and found out the valve won't move. so i think i found my problem. but hey, thanks for all the help guys, i was really lost.
Reply With Quote
  #16  
Old 01-03-2009
b3kbruiser's Avatar
Member
 
Join Date: Nov 2006
Location: DFW Area, Tx
Posts: 713
Quote:
Originally Posted by Trigger_Happy View Post
did a cylinder leak down test(i got 80% leakage on cylinder 3)
Yep
Reply With Quote
  #17  
Old 01-15-2009
Member
 
Join Date: Jul 2008
Location: marietta ohio
Posts: 33
Quote:
Originally Posted by Earl43P View Post
http://www.fordfuelinjection.com/?p=30 says:

"The TPS sensor has a great deal of influence on the fuel ratios and timing curves, because the TPS is a user interface sensor. The TPS is the closest thing you have to a phone call into EEC."

Replace yours. Your gas mileage should improve.

The hunting idle could be a bad IAC. Clean it or replace it. When you have it off, look at the gasket. Many have improved their idle by making a new gasket with a smaller hole.

It sounds like your IAC isn't working. If you disconnect its electrical connector with the engine running, the idle should change. If nothing changes, it isn't working. Could also have a vaccum leak affecting idle and MPG. Spray carb cleaner around the intake, vaccum hoses/connections (including brake booster line) and listen for idle changes.
I had similar problems in my 89, 2.3, I replaced the Air Idle Control valve first and it fixed it for a few days, then problem started again, then i changed the Throttle postion Sensor and it fixed it all! Good Luck
Reply With Quote
  #18  
Old 01-16-2009
Bryan22's Avatar
Member
 
Join Date: Nov 2008
Location: Lancaster, ca
Posts: 211
he found it. if the EGR isn't moving that's probabaly where all his problems are coming from, especially if it's stuck open.
Reply With Quote
  #19  
Old 01-30-2009
Trigger_Happy's Avatar
Member
Thread Starter
 
Join Date: Sep 2008
Location: Douglass, KS
Posts: 92
well i bought a new egr valve and put it on the other day. i havent ran a full tank through yet but i dont think that was my fuel mileage problem.
Reply With Quote
  #20  
Old 01-30-2009
Bryan22's Avatar
Member
 
Join Date: Nov 2008
Location: Lancaster, ca
Posts: 211
you still getting that code 63?
Reply With Quote
  #21  
Old 01-30-2009
Trigger_Happy's Avatar
Member
Thread Starter
 
Join Date: Sep 2008
Location: Douglass, KS
Posts: 92
I haven't checked it yet, i've just been waiting to run a full tank through. i really need to put it on the scanner and make sure its ok.
Reply With Quote
  #22  
Old 01-31-2009
mps01r6's Avatar
Member
 
Join Date: Sep 2007
Location: dallas
Posts: 84
that weak #3 cylinder is what i would be worried about. i would say that is what you need to fix.... or run it till it blows up and then it will be fixed with a new motor. i just think that you are only running on cylinders 1,2, and 4 right now and cylinder number 3 is not working correctly and that is where you are loosing your fuel milege at.
Reply With Quote
  #23  
Old 01-31-2009
Trigger_Happy's Avatar
Member
Thread Starter
 
Join Date: Sep 2008
Location: Douglass, KS
Posts: 92
ya but how would i fix that third cylinder? I have no clue as to what is causing it.
Reply With Quote
  #24  
Old 01-31-2009
TheStig88's Avatar
Member
iTrader: (4)
 
Join Date: Aug 2008
Location: Columbia, Missouri
Posts: 2,120
Quote:
Originally Posted by cchsbuzz19 View Post
Have you replaced all the filters such as fuel, air. your 02 sensors could be bad. Don't feel bad about your mpg I think I still hold the worst mpg on this site 10.7 mpg.
nah....i officially hit 8 mpg the other day when i filled up
if i find the receipt i could prove it....

when i usually get about 16 in the city and 24 highway

stupid cold weather

but i'm also not fuel injected.....and that hurts a little too
Reply With Quote
  #25  
Old 01-31-2009
Bryan22's Avatar
Member
 
Join Date: Nov 2008
Location: Lancaster, ca
Posts: 211
if it were only running on 3 cylinders you'd know. it's idle like crapola and have a huge lack in power. have you pulled plugs to see what they look like? could be a bad FPR.
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
K & N FIPK completely F'ed my MAF sensor. Diltzy 4.0L OHV & SOHC V6 Tech 12 10-22-2008 07:46 AM
Is my engine completely broke!!! DaGGer 2.9L & 3.0L V6 Tech 15 10-22-2008 12:27 AM
Completely white screen? NEED HELP! Oh5Edge Audio & Video Tech 0 04-01-2008 04:59 PM
My truck is getting completely overhauled ! EricTodd General Ford Ranger Discussion 59 05-04-2007 06:15 AM
What happens when a wheel bearing fails completely? FMD General Ford Ranger Discussion 33 12-29-2006 01:44 PM


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 11:05 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.