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  #1  
Old 07-05-2011, 07:19 PM
jwest89 jwest89 is offline
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Unhappy I have no ideas left, please help before I have to scrap my Ranger!

My 2002 2.3 Ranger is going to be in the junkyard if i can't get this figured out soon. A few weeks ago it wouldn't start, so I replaced the wires and plugs, and it started but smoked and ran rough for a little while. I filled it up with premium and ran a bottle of complete fuel system cleaner through it and ran better than it had in months. A week ago it died on the road and was towed home, now it will barely start, runs like a cylinder is not firing below 1500 rpm and sounds good over 1500 rpm. After a few seconds over 1500 rpm it cuts itself back to idle for less than a second and tries to run at about 200 - 300 rpm and sounds like hell, shaking bad, doesn't respond to any throttle input, and dies out. I just had the fuel pump replaced, fuel filter is good, MAF was cleaned 2 days ago, the intake is covered in a layer of oily crap, the plugs get fouled up in a few seconds, and to top it all off, I can't get an OBDII reader to connect to it, it says it cannot communicate with the computer. I have no ideas and I can't afford to just start blindly swapping parts.
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  #2  
Old 07-05-2011, 07:21 PM
HazardousRanger HazardousRanger is offline
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Default Re: I have no ideas left, please help before I have to scrap my Ranger!

whoa dont send the poor baby to the junkyard! we will figure it out man
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  #3  
Old 07-05-2011, 07:24 PM
Christianguy Christianguy is offline
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Default Re: I have no ideas left, please help before I have to scrap my Ranger!

Can someone please CHIME In to help this guy?
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  #4  
Old 07-05-2011, 07:25 PM
Pbav8tor Pbav8tor is offline
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Default Re: I have no ideas left, please help before I have to scrap my Ranger!

If it says it cannot communicate with the computer, I would start there.
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  #5  
Old 07-05-2011, 07:28 PM
2000ranger302 2000ranger302 is offline
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Default Re: I have no ideas left, please help before I have to scrap my Ranger!

Is the check engine light on? and is your cig lighter working because the obII port is on the same fuse as that. Your computer might be shot how many miles are on this truck??
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  #6  
Old 07-05-2011, 07:37 PM
jwest89 jwest89 is offline
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Default Re: I have no ideas left, please help before I have to scrap my Ranger!

It has just over 100,000 miles, and I will check the cig lighter now. About a month before I stared having trouble the check engine light came on, along with "check fuel cap" the code was for the evap canister,the tank was overfilled and from what I understand that caused the evap canister issue, but money is short so I put off fixing it.
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  #7  
Old 07-05-2011, 07:52 PM
RedLineRanger RedLineRanger is offline
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Default Re: I have no ideas left, please help before I have to scrap my Ranger!

Ecu ?
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  #8  
Old 07-05-2011, 08:39 PM
Rg1Baja Rg1Baja is offline
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Default Re: I have no ideas left, please help before I have to scrap my Ranger!

Sounds ECU to me.
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  #9  
Old 07-05-2011, 09:50 PM
Tito Tito is offline
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Default Re: I have no ideas left, please help before I have to scrap my Ranger!

can i have it? =)

honestly it could be a lot of things. sounds just like whats happening with my 1990.

i would start with the sensors. first clean out the IAC. take it off and spray with throttle body cleaner. also spray some in the throttle body itself and open the butterfly and spray in there clean off with a clean towel. That has fixed most problems with trucks having symptoms like yours.

also check the TPS (throttle positioning sensor).

if this doesnt work then take your ICM (ignition control module) and have it tested. (Autozone, O'reilly, checkers) they usually can do it.

if after all this it still doesnt work then check your crankshaft positioning sensor. (usually with a multimeter or watever) or just replace it. but sometimes its really hard to get to like mine....

im going to replace mine soon because this is the only thing left other than the ECU... hope this helps.

good luck and if you dont want your truck ill be more than happy to have it =)
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  #10  
Old 07-06-2011, 08:53 AM
ddunfee ddunfee is offline
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Default Re: I have no ideas left, please help before I have to scrap my Ranger!

Can't talk to the computer, I would see if I had a friend that has one that I could borrow to see if that fixes it. They are not too hard to exchange.
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  #11  
Old 07-06-2011, 09:20 AM
Dcrymes99ranger Dcrymes99ranger is offline
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Default Re: I have no ideas left, please help before I have to scrap my Ranger!

Check your fuse for the Cig lighter. Cause my obd ll wasn't working for the longest of time. And someone said to check the Cig lighter fuse and of course it was burnt out. I replaced it and walla! it was fixed. Also I read obd ll's at work. (Advance) And if that light isn't on then the code reader won't recognize it.
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  #12  
Old 07-06-2011, 10:21 AM
modelageek modelageek is offline
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Default Re: I have no ideas left, please help before I have to scrap my Ranger!

Quote:
Originally Posted by jwest89 View Post
My 2002 2.3 Ranger is going to be in the junkyard if i can't get this figured out soon. A few weeks ago it wouldn't start, so I replaced the wires and plugs, and it started but smoked and ran rough for a little while. I filled it up with premium and ran a bottle of complete fuel system cleaner through it and ran better than it had in months. A week ago it died on the road and was towed home, now it will barely start, runs like a cylinder is not firing below 1500 rpm and sounds good over 1500 rpm. After a few seconds over 1500 rpm it cuts itself back to idle for less than a second and tries to run at about 200 - 300 rpm and sounds like hell, shaking bad, doesn't respond to any throttle input, and dies out. I just had the fuel pump replaced, fuel filter is good, MAF was cleaned 2 days ago, the intake is covered in a layer of oily crap, the plugs get fouled up in a few seconds, and to top it all off, I can't get an OBDII reader to connect to it, it says it cannot communicate with the computer. I have no ideas and I can't afford to just start blindly swapping parts.
to bad you did not post before you did the fuel pump. We would have had you do a fuel pressure test. they are very easy to do. I agree the first thing you need to do is to see if you can get the obd port working as stated already. check the cig/obd port fuse..........your truck also has a pcv vent hose that goes bad where it bends..I think it is on the drivers side of the engine toward the bottom but I am not sure.....but first try and get the obd port working...........that is a nice truck with a great engine....I would not even think of throwing in the towel....you got a good 100k left in it......
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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).
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  #13  
Old 07-06-2011, 10:34 AM
naturecakezzz naturecakezzz is offline
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Default Re: I have no ideas left, please help before I have to scrap my Ranger!

When my truck couldn't talk to the comp, it was my ecu had it towed to ford they re-mapped it for 200$ and it fixed it
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  #14  
Old 07-06-2011, 11:05 AM
modelageek modelageek is offline
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Default Re: I have no ideas left, please help before I have to scrap my Ranger!

some trucks don't have a cig lighter, if you have 2 cig/power ports, one is a cig lighter and that is the same fuse as the obd port. if you only have one cig/port then that is the aux power port and is on a different fuse then the obd port.........did I explain that clearly?...if you do have power at the obd port I would disconnect the neg battery cable and inspect the ecu. see if there is any possible leak around it. I think there is a ground screw for it. pull the ecu out and see if it looks Ok? any corrosion etc?
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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).
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  #15  
Old 07-06-2011, 01:10 PM
Mirage Mirage is offline
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Default Re: I have no ideas left, please help before I have to scrap my Ranger!

I also have to side with the ECU. Remember these guys default to a "limp home" mode when the ECU dies, and trying to drive it like normal is almost impossible. The fact that you can't communicate with it through the OBD port is a big clue. Yes it could be the fuse, and I hope it is, but if so, you still have a problem with the ECU. Pull it and get it checked out. Just my 2 cents worth.
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