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  #1  
Old 08-21-2018, 01:59 PM
Slammed337 Slammed337 is offline
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Default 2004 4.0 V6 having multiple issues help

Hello
Been researching through here and just registered as I just purchased a 2004 ford ranger 4.0 v6 sohc auto 4x4
Truck has 177k miles on it
Bought with a misfire issue
Had scanned and has multiple things just need some help on a couple and suggestions
Code P0300 vacuum leak I think? Ideas what?
Told possibly intake manifold cracked
Multiple random misfires
IAT- intake air temp. So just need to replace?
Cylinder 1-3 random misfire
Was told essentially 1-3 are showing dead
Any thoughts on this?

----------

Also supposed to have newer plugs and wires motor craft brand
And also new egr valve
New ignition module as well
Any help is appreciated
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  #2  
Old 08-21-2018, 02:03 PM
djfllmn djfllmn is offline
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Default Re: 2004 4.0 V6 having multiple issues help

P0300- is a misfire code(random misfire)
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  #3  
Old 08-21-2018, 02:07 PM
Slammed337 Slammed337 is offline
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Default Re: 2004 4.0 V6 having multiple issues help

Ahhh gotcha
Any thoughts on where to start looking at on the misfire?
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Old 08-21-2018, 02:12 PM
djfllmn djfllmn is offline
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Default Re: 2004 4.0 V6 having multiple issues help

Quote:
Originally Posted by Slammed337 View Post
Ahhh gotcha
Any thoughts on where to start looking at on the misfire?
Check for the essentials

spark
fuel
compression
air

sounds like someone shot the parts cannon at it in hopes of fixing it
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  #5  
Old 08-21-2018, 02:18 PM
Slammed337 Slammed337 is offline
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Default Re: 2004 4.0 V6 having multiple issues help

Quote:
Originally Posted by djfllmn View Post
Check for the essentials

spark
fuel
compression
air

sounds like someone shot the parts cannon at it in hopes of fixing it
Yes thatís the impression I also got on it
Going to work on it after I get better idea what it needs
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  #6  
Old 08-21-2018, 02:28 PM
KenHigg KenHigg is offline
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Default Re: 2004 4.0 V6 having multiple issues help

I would start with the easy things. Do you have any kind of scan tool?
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  #7  
Old 08-21-2018, 02:41 PM
Slammed337 Slammed337 is offline
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Default Re: 2004 4.0 V6 having multiple issues help

Quote:
Originally Posted by KenHigg View Post
I would start with the easy things. Do you have any kind of scan tool?
I donít have one
But have a friend who scanned with a snap on tools scanner
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  #8  
Old 08-21-2018, 02:57 PM
KenHigg KenHigg is offline
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Default Re: 2004 4.0 V6 having multiple issues help

So you can check for a vacuum with a propane bottle: Link

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Can't get the spark test video link to work...

Last edited by KenHigg; 08-21-2018 at 03:00 PM.
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  #9  
Old 08-22-2018, 12:58 PM
Slammed337 Slammed337 is offline
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Default Re: 2004 4.0 V6 having multiple issues help

Hopefully I can get it figured out this weekend
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  #10  
Old 08-22-2018, 01:34 PM
modelageek modelageek is offline
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Default Re: 2004 4.0 V6 having multiple issues help

Quote:
Originally Posted by Slammed337 View Post
Hopefully I can get it figured out this weekend
Does the engine run at all? If the engine does not run at all and or cranks over easily you should check for a timing chain issue?

The ignition control module is part of the ECU? Was the ECU swapped out?

I think the IAT is in the middle of the air intake, check that's it sitting properly and no cracks?

It's definitely a 4.0? Right?

Sent from my SM-J320V using Tapatalk
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2004 Ext Cab, 4WD, 4.0, Auto, 154k. (4.0 engine is out of a 2009 Ranger w/96k) ( as of 7/1/2017)

2004 Ranger, Ext Cab, 2WD, 3.0, 5 speed , 4WABS, crank windows, no cruise, Edge 116k.(6/5,2014) (SOLD).
1999 Ford Ranger, Reg Cab, 2.5, 5 speed, 2WD, no AC, 150k (SOLD).

Last edited by modelageek; 08-22-2018 at 01:42 PM.
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  #11  
Old 08-23-2018, 12:25 AM
Slammed337 Slammed337 is offline
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Default Re: 2004 4.0 V6 having multiple issues help

Quote:
Originally Posted by modelageek View Post
Does the engine run at all? If the engine does not run at all and or cranks over easily you should check for a timing chain issue?

The ignition control module is part of the ECU? Was the ECU swapped out?

I think the IAT is in the middle of the air intake, check that's it sitting properly and no cracks?

It's definitely a 4.0? Right?

Sent from my SM-J320V using Tapatalk
Sorry yes it starts and runs as is
Ignition module is new
Checking or replacing maf as it also is the IAT
It is 4.0 v6
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  #12  
Old 08-23-2018, 03:48 AM
KenHigg KenHigg is offline
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Default Re: 2004 4.0 V6 having multiple issues help

A couple more quick checks:
a. Sometimes a head gasket issue will manifest by air pressure build up in the coolant system so take the radiator cap off and feel for air pressure. If there is a consistent air pressure coming out you may have a blown head gasket.
b. Check the oil on the dipstick and see if it looks milky or a light color of brown. If so same thing as above, a cylinder/ head issue may be allowing coolant into the oil system.
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  #13  
Old 08-23-2018, 09:50 AM
modelageek modelageek is offline
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Default Re: 2004 4.0 V6 having multiple issues help

Quote:
Originally Posted by Slammed337 View Post
Sorry yes it starts and runs as is
Ignition module is new
Checking or replacing maf as it also is the IAT
It is 4.0 v6
Ok

1)Get a scanner and re-scan it

2)post ALL of the actual codes here. We don't want "it misfires or it's the o2" we want the actual codes i.e. p0301, etc.

3)I know they said plugs and wires new but you need to inspect them. Pull a spark plug or 2 and post a picture of it. So just to be clear so you know that if they replaced the ignition module they actually replaced the ECU. The ignition module is a part of the ECU.





Sent from my SM-J320V using Tapatalk
__________________
2004 Ext Cab, 4WD, 4.0, Auto, 154k. (4.0 engine is out of a 2009 Ranger w/96k) ( as of 7/1/2017)

2004 Ranger, Ext Cab, 2WD, 3.0, 5 speed , 4WABS, crank windows, no cruise, Edge 116k.(6/5,2014) (SOLD).
1999 Ford Ranger, Reg Cab, 2.5, 5 speed, 2WD, no AC, 150k (SOLD).

Last edited by modelageek; 08-24-2018 at 04:23 AM.
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  #14  
Old 09-03-2018, 06:03 AM
Slammed337 Slammed337 is offline
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Default Re: 2004 4.0 V6 having multiple issues help

So hear are the codes finally
Got IAT CODE FIXED minor improvement
So CODES
P0174 fuel too lean bank 2
P0300 random misfire detected
P0301 cylinder 1 misfire
P0302 cylinder 2 misfire
P0303 cylinder 3 misfire
P0316 misfire in first 1000 revolutions

Thoughts? Vacuum line?
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  #15  
Old 09-03-2018, 07:01 AM
modelageek modelageek is offline
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Default Re: 2004 4.0 V6 having multiple issues help

Quote:
Originally Posted by Slammed337 View Post
So hear are the codes finally
Got IAT CODE FIXED minor improvement
So CODES
P0174 fuel too lean bank 2
P0300 random misfire detected
P0301 cylinder 1 misfire
P0302 cylinder 2 misfire
P0303 cylinder 3 misfire
P0316 misfire in first 1000 revolutions

Thoughts? Vacuum line?
Bank 1(passenger side) has an issue use carb cleaner and spray while idling around bank 1.

Sent from my SM-J320V using Tapatalk
__________________
2004 Ext Cab, 4WD, 4.0, Auto, 154k. (4.0 engine is out of a 2009 Ranger w/96k) ( as of 7/1/2017)

2004 Ranger, Ext Cab, 2WD, 3.0, 5 speed , 4WABS, crank windows, no cruise, Edge 116k.(6/5,2014) (SOLD).
1999 Ford Ranger, Reg Cab, 2.5, 5 speed, 2WD, no AC, 150k (SOLD).
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