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Taylor Mc.
Dodge Dakota
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11/12/2010
22:11:55

Subject: '95 Dakota millage problems
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Okay, so I bought a 1995 dodge Dakota with 159000
miles on the 3.9 v6 and the 4-gear auto
transmission. About 5 months ago and the person
said it was getting about 13-14 mpg on the
highway. So I went ahead, changed the spark
plugs, air cleaner, and put some Lucas injector
cleaner in the gas. I then got 23-24 mpg on my
first tank on the high way.
A few months later a spark plug died and I dint
realize it was 1 dead spark plug, so I changed the
plug wires, cap, rotor, ignition cold and chopped
the cat. All of which needed to be done. When I
finally changed the plugs, it ran okay. I
currently get about 16 mpg freeway and 8-12 mpg in
town. The power in it is horrible, no bottom end,
and a really week top end. No clue what’s wrong
or what I should do.




daddio
Dodge Dakota
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11/13/2010
10:28:38

RE: '95 Dakota millage problems
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First, check for codes. When you removed the cat what did you do with the O2 sensor?



yea
Dodge Dakota
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11/13/2010
14:10:07

RE: '95 Dakota millage problems
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95 is EGR, With no cat or gutted cat the EGR doesn't
work and guess what the results are.



Taylor Mc.
Dodge Dakota
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11/13/2010
23:20:07

RE: '95 Dakota millage problems
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i have only 1 o2 sensor and it was pre cat so i left
it in place. i have no way of checking codes a the
moment but my check engine light hasnt come on at
all.
what can i do about my EGR.
And just a little fyi im 18 years old and a college
student I dont really need smart ass comments.
thanks



daddio
Dodge Dakota
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11/14/2010
08:30:51

RE: '95 Dakota millage problems
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You should be able to check for codes by doing the following:

Cycle the key as follows: On/Off/On/Off/On(by On I mean not all the way to start). Now the CEL should blink indicating codes.

One flash, pause, then two flashes= Code 12.

Five flashes, pause, Five flashes= Code 55( End of Codes or No codes stored.)

You will want to pick up a service manual at a parts store. Best 20 bucks you'll spend.

You can check the EGR. It may or may not be the problem. Is this a 4x2 or 4x4 truck? Extended Cab or Reg. Cab?



daddio
Dodge Dakota
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11/14/2010
08:38:22

RE: '95 Dakota millage problems
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This should help. Poor Broke college kid, I know, I've got 2 of them myself.


ON-BOARD DIAGNOSTICS

1. Cycle the ignition key ON-OFF-ON-OFF-ON within 5 seconds. To cycle the ignition key ON means to turn it only as far as it takes to get the radio to come on. It does not mean to turn the engine on.

2. Count the number of times the "check engine" lamp on the instrument panel flashes on and off. The number of flashes represents the code. There is a slight pause between the flashes representing the first and second digits of the code. Longer pauses separate individual codes. For example, flash-flash-flash [pause] flash-flash represents the code 32.

A code of "55" represents end of error codes. If this is all you get then no error codes are stored in the computer. This is the normal condition code.
CODE Description of Trouble Code
11 Timing belt skipped 1 tooth or more from initial learned value, Intermittent loss of either camshaft or crankshaft position sensor, No crank reference signal detected during engine cranking
12 Direct battery input to PCM was disconnected within the last 50 key-on cycles
13 No change in MAP from start to run
14 MAP sensor voltage too low
15 No vehicle speed sensor signal
17 Closed loop temp not reached or engine cold too long
21 02s sensor problem (oxygen sensor), upstream or down stream
22 Engine coolant temp sensor out of range
23 Intake air temp sensor out of range
24 Throttle Position sensor out of range
25 Idle air control motor circuits, target idle not reached (+/- 200),vacuum leak found
27 Injector control circuit
31 Evap purge flow monitor failure or evap solenoid circuit
32 EGR system failure
33 A/C clutch relay circuit
34 Speed control Solenoid circuits
35 Rad Fan control relay circuit
37 Torque converter clutch solenoid CKT or park/neutral switch failure
41 Generator field not switching properly
42 Fuel pump relay control ckt, Auto shutdown relay control ckt, No ASD relay output voltage at PCM, Fuel level sending unit volts out of range, Fuel level unit No change over miles
43 Multiple/ single cylinder misfire
44 Battery temp sensor volts out of range
46 Charging system voltage too low
51 Fuel system lean
52 Fuel system rich
53 Internal control failure
54 No Cam signal at PCM
55 End of error messages (If you get this only, no errors were found)
62 PCM failure SRI mile not stored
63 PCM Failure EEPROM write denied
64 Catalytic Converter Efficiency Failure
65 Power steering switch failure



Bob Lincoln
Dodge Dakota
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11/15/2010
08:20:38

RE: '95 Dakota millage problems
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"95 is EGR, With no cat or gutted cat the EGR doesn't work and guess what the results are."

Please explain how the EGR will not work if the catcon is removed.



yea
Dodge Dakota
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11/15/2010
10:37:37

RE: '95 Dakota millage problems
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"I dont really need smart ass comments."

Smart ass comments?
Really?

You came here looking to get help with your truck
and that's just what you got. I don't get paid for
this nor did you have to pay to get here.
Straight and to the point I told you were to start
fixing. You looking to get it sugar coated or
someone to hold your hand go see your mom.
(18 & in college) Grow a set!

Have fun playing with bob an daddio neither will
have a clue here. Infact bob passes on more bad
info then anything else.

Take the info I gave you and run it by Larry & you
will get it confirmed.

(Poor idle, Poor performance, poor mpg's & pinging
are all symptoms).............



Taylor Mc.
Dodge Dakota
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11/15/2010
19:50:43

RE: '95 Dakota millage problems
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"and guess what the results are"
is an unnecessary smart ass comment.
so yes really.
i dont need thing sugar coated, im living on my own and going to college was
supposed to be something completely separate from the smart ass comment, it
was supposed to imply that im poor and have limited access to anything.

Now that were done arguing ive asked what can i do about the EGR.

there is no pinging that i can tell, however my idle does bog down and then
comes back but you have to really be paying attention to hear it and feel it
happen.

also i was wondering how my EGR wouldn't work with out a cat, i mean it was
after my o2 sensor so im a bit confused.

so what do i need to do to figure out exactly whats wrong and fix it.



Bob Lincoln
Dodge Dakota
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11/16/2010
08:26:49

RE: '95 Dakota millage problems
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"also i was wondering how my EGR wouldn't work with out a cat"

We're all waiting to hear that.

Try allpar.com, they don't insult you, it's moderated and not allowed. You get a friendly reception, fast responses, and you must create a free login profile, which prevents people from posing as you and posting childish comments (such as the ones that are guaranteed to follow this).

"I changed the plug wires, cap, rotor, ignition cold and chopped the cat. All of which needed to be done."

I'm guessing that's *ignition coil*. How did you determine that the coil needed replacing, and why did you chop out the catcon? If it were plugged it would run better now, but that's apparently not the case. What diameter exhaust do you now have? Reducing backpressure will cut down on your low-end power.

Depending on your driving style, your mileage might be expected. I baby mine and get 20 mpg highway, 16 city. But my wife drove it one tankful and got 13 mpg city. So it could be that you need to ease up on the gas a little.

Did you change the air filter and PCV valve when you replaced the rest?



Tyler
Dodge Dakota
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12/25/2010
23:31:47

95 Dakota problems
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i got 1995 dakota 3.9L here for he last week when my truck is cold hasent been started that day it will take prob about 10 seconds of cranking over for it to start up then it acts like is going to die yet but when it warms up it runs fine. i have replaced idle contol valvue and throttle position sensor and i just found this forum and i think it says 12 and 54 would cam signal fix this or could it be something else? any help would be greatly appricated



Bob Lincoln
Dodge Dakota
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12/28/2010
08:56:31

RE: '95 Dakota millage problems
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Code 54 Signal loss from the fuel injector
sync pickup during engine rotation. (HEP)

Check the distributor pickup and the shaft for side play, and also check the bushing underneath the dist shaft for wear. These often wear out and cause wobble.

If that's all good, check fuel pressure. Could be a failing pump or the check valve in the pump failing to hold pressure. One way to test this is to turn the key to ON, then OFF, then ON again to prime the system, then see if it starts more quickly.



Tyler
Dodge Dakota
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1/06/2011
16:16:45

RE: '95 Dakota idle Problems
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My 95 dodge Dakota has a rough idle I have already
replaced throttle position sensor and idle contol motor any
other ideas what it possible could be



daddio
Dodge Dakota
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1/06/2011
19:03:39

RE: '95 Dakota millage problems
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Tyler, is your truck doing this only on a cold start? If so, have your battery load tested. A weak battery will still start the truck but also cause an erractic idle. If battery voltage gets too low the PCM will lose it's idle memory setting and cause the rough idle/ stalling.



Tyler
Dodge Dakota
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1/06/2011
19:21:31

RE: '95 Dakota millage problems
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Yes I took it to autozone and had them tested my battery and
they said it was fine



Easley
Dodge Dakota
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2/22/2011
20:46:09

RE: '95 Dakota millage problems
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I think the lack of a cat might have something to do with the loss of power. My '94 had a gutted cat when I bought it. Installed new cap, rotor, plugs, coil, wires, EGR and PCV valve, K&N air filter w/ seperate valve cover breather, new radiator, thermostat, water pump, battery, motor supports, all new brakes even new drums and rotors, wheels and tires (225's and stock wheel size), new timing chain, new fuel pump, and everything checks out ok. Can't find a problem anywhere and no trouble codes. Have done everything I can think of for better milage and no results. Milage stays around 16 and just feels underpowered. Was getting over 22 (drove 212 miles on 8 gallons of gas), but got tired of the old muffler rattling and falling apart, so put a cheap glass pack on (2.5" pipe). When doing that I discovered the cat is gutted and the old muffler apparently was giving it the right amount of back pressure. Have not found an 02 sensor anywhere and isn't shown in my manual for '94 models. My best guess for keeping the cat is for back pressure. Plan on having a real muffler shop install a new cat and muffler soon and fixing the 02 sensor situation.

Your guess is as good as mine...



jon W
Dodge Dakota
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4/18/2011
19:54:29

RE: '95 Dakota O2 sensor
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Hi all, I have a '95 with 4x4, ext cab, runs OK, but
lousy mileage. It has a 3.9, stock. Plugs are new,
idles fine, starts fine. 140,000 miles, so I want to
replace the o2 sensor next. I have done plugs and
air filter, wires look OK. (I haven't had the truck
long). Found the sensor- on top of the exhaust Y.
How the hell do you get a wrench on it???? Is there
a secret? Also, the connector is sitting on the side
of the trans- I can't get 2 hands on it to seperate.
Any hints? Thanks!



dakota don
Dodge Dakota
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4/19/2011
01:17:29

RE: '95 Dakota millage problems
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no smart ass comments i understand in general but
that remark wasn't half as bad as some others on
here. you're being a little bit of a girl about a
harmless comment.

as to the post removing the cat will make the EGR
mess up on that truck have same truck did same
thing, put cat back on. i went with high flow
magnaflow works great no codes and not to much worse
than no cat. quieter for sure



dakota don
Dodge Dakota
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4/19/2011
01:18:35

RE: '95 Dakota millage problems
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no smart ass comments i understand in general but
that remark wasn't half as bad as some others on
here. you're being a little bit of a girl about a
harmless comment.

as to the post removing the cat will make the EGR
mess up on that truck have same truck did same
thing, put cat back on. i went with high flow
magnaflow works great no codes and not to much worse
than no cat. quieter for sure



02dak4.7
Dodge Dakota
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4/20/2011
12:53:54

RE: '95 Dakota millage problems
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On my 93 I cut a 7/8 wrench in half and used a piece of rope tied to it to help give me some more leverage with the other hand.

as for the connector you have to do it by feel, there is no real other way.

it sucks, its a pain in the a$s but thats the way of the shade tree mechanic.



hey
Dodge Dakota
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4/21/2011
14:12:57

RE: '95 Dakota millage problems
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dakota don I wouldn't even waste my time
if someone wants to listen to dumb azz booby lincoln
they deserve what they get
he's been on here for years passing along bad info

he still cant figure his arse from his elbow



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