Potential E4WD problem
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Lead Driver
Joined: Sep 2003
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Likes: 208
From: SoCal
Potential E4WD problem
Hi All,
I just started to get an intermittent blinking signal from my Electronic 4 Wheel Drive warning light. When it comes on, it blinks four times, then pauses, then repeats. I can't find a cross reference to this in my Chilton's manual. Does anyone have any idea what the problem might be? The van is a 1990 XLT extended with a 4 liter v6.
thanks
I just started to get an intermittent blinking signal from my Electronic 4 Wheel Drive warning light. When it comes on, it blinks four times, then pauses, then repeats. I can't find a cross reference to this in my Chilton's manual. Does anyone have any idea what the problem might be? The van is a 1990 XLT extended with a 4 liter v6.
thanks
Hotshot
Joined: Aug 2002
Posts: 12,679
Likes: 15
From: BC, Canada
My manuals at home only go back to 1994 but I'll assume it's the same.
A flashout code 4 means Rear output speed sensor connector or internal circuitry of sensor has discontinuity.
I think I would probably just replace the speed sensor on the rear case half and try that.
A flashout code 4 means Rear output speed sensor connector or internal circuitry of sensor has discontinuity.
I think I would probably just replace the speed sensor on the rear case half and try that.
Junior User
Joined: Apr 2004
Posts: 54
Likes: 0
E4wd
Mine was doing the same thing and I let it go for quite some time as the
van worked fine without any indication it was causing any trouble. It only
sent the error code after extended high speed driving (65+MPH) in hot
weather. When I changed transfer case fluid I pulled sensors and swapped
positions, also cleaned and checked connections. Haven't had anymore
error codes in the last year so hopefully that fixed it. If I had the info from
this forum sooner I would have looked into it a lot sooner. Hope I haven't
damaged any clutches in the transfer case.
van worked fine without any indication it was causing any trouble. It only
sent the error code after extended high speed driving (65+MPH) in hot
weather. When I changed transfer case fluid I pulled sensors and swapped
positions, also cleaned and checked connections. Haven't had anymore
error codes in the last year so hopefully that fixed it. If I had the info from
this forum sooner I would have looked into it a lot sooner. Hope I haven't
damaged any clutches in the transfer case.
Laughing Gas
Joined: Jun 2004
Posts: 1,240
Likes: 3
From: Dallas, Texas
The code is "Blinking 4 times" Sensor is dirty and need's to be cleaned. There is one on top and one on the side, Clean both and it will stop. Clear the code after you do this.
It will flash Four times or Three times. It deoends which one is dirty.
It will flash Four times or Three times. It deoends which one is dirty.
Thread Starter
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Lead Driver
Joined: Sep 2003
Posts: 7,016
Likes: 208
From: SoCal
I finally got around to checking the sensors tonight, and found something a little disturbing. The one in the rear looked fine. The one on the top had pink fluid in the connector. Does the transfer case use ATF like the transmission? I am now worried about where that fluid is coming from. There are no signs of leakage around the sensor, so my best guess is that the sensor itself is leaking, allowinf fluid to go through itself to the connector.
I cleaned off the connector and put it back together. The blinking light went out. For now.
I cleaned off the connector and put it back together. The blinking light went out. For now.
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Postmaster
Joined: Apr 2001
Posts: 3,818
Likes: 3
Yes, the transfer case uses ATF as does the front differential. There is also a vent for the transfer case on the top, near the sensor. You may be overfilled and forcing fluid out the vent onto the sensor. When refilling the TC fill it to just below the fill plug. You should be able to hook the first joint of your pinky into the case and the fluid level should just touch your finger.
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Thread Starter
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Lead Driver
Joined: Sep 2003
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From: SoCal
Thanks for the reply Aero.
The funny thing is, I have never even checked the fluid in the TC, nor the front diff. I guess it's overdue, at about 135,000 miles. I'll have to look in that area tonight to see if I can find any obvious leakages.
The TC has two plugs that I can see; one in the case behind the front drive shaft, and the other further back. I guess the more forward one is the drain, and the rearward one is for filling?
While down there, I noticed that my rear diff is leaking from just about everywhere that it can. The worst one appears to be the pinion area, but it looks like there is fluid seeping out of the sides where the axle tubes are connected, and the rear cover. Looks like I'll have to start thinking about replacing the pinion seal. But I don't know about the leaks from the axle tubes.
The funny thing is, I have never even checked the fluid in the TC, nor the front diff. I guess it's overdue, at about 135,000 miles. I'll have to look in that area tonight to see if I can find any obvious leakages.
The TC has two plugs that I can see; one in the case behind the front drive shaft, and the other further back. I guess the more forward one is the drain, and the rearward one is for filling?
While down there, I noticed that my rear diff is leaking from just about everywhere that it can. The worst one appears to be the pinion area, but it looks like there is fluid seeping out of the sides where the axle tubes are connected, and the rear cover. Looks like I'll have to start thinking about replacing the pinion seal. But I don't know about the leaks from the axle tubes.
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