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About 3 weeks ago, I drove thru a big puddle and my O/D light began flashing when I gave it some gas afterward. This happened once before and I attributed it to slippage.
About 30 minutes later, I get a CEL. I brought it to Autozone to get a reading and it came back as P0401, insufficient EGR flow. It is the original EGR on the car. I haven't checked for a vaccuum leak (will do it on Monday). Throttle body was cleaned last year.
Any suggestions otherwise???
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It doesn't sound like the CEL and the OD light are related.
The most common cause for the P0401 code is plugged EGR passages in the intake manifold. Remove the throttle body and gasket for access and it will be evident what needs to be cleaned out. Clean the throttle body while you have it off. Throttle body cleaner and a toothbrush work great for the throttle body. You will probably need to scrape and poke on the EGR passages.
Jim Johnson
98 SVT
03 Escape Limited
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Originally posted by Big Jim:
It doesn't sound like the CEL and the OD light are related.
For the OD light issue, you may want to clean the VSS connectors. It may be that water got in.
Edit. From Transaxle FAQ
VSS (Vehicle Speed Sensor)
I had to change my VSS late this afternoon, so I thought I would walk you guys through the process on my Duratec/CD4E. It's really not all that bad, except unplugging the connector. My symptoms were pretty simple... Bouncing/in-accurate seedo and once that was bad enough, the tranny would not shift properly.
- Secure the vehicle, in the air, safely.
- Remove your air cleaner & tubing.
- Reach down, under the brake booster, and locate the VSS connector. You can actually see it better from the bottom, just no way to actually reach it from there. It will take some serious single handed twisting to disconnect this connection, but don't give up!
- From under the car, use a 5/16" wrench to remove the single bolt from the VSS retainer. * Note that this retainer looks like it is upside down, with a tab resting on the case of the tranny. Don't fret! This is normal, but be sure to replace the retainer in the same way that it was removed.
- Grasp the sensor body and lightly wiggle it out of it's location. Use gently force when wiggling, but apply steady pressure upwards. The sensor body should slide right out. Do not jerk upwards on the sensor, when removing it, or you will run the risk of gear coming off the end of the sensor. This is not a real big deal, since the gear itself is about an inch tall. Along with the added shaft that is part of the gear, the gear assy is probably around 4 inches long. You should be able to grasp it with a pair of crooked needle nose pliers, but it would be one hella tight fit!!
- Once the sensor is out of the case and you have removed the gear assy from the sensor body, use a rag to wrap around the body of the sensor base. This part of the sensor is metal, so we don't want to damage it. Use a pair of pliers and grasp the metal part of the sensor. LIGHTLY! Do Not Squeeze Hard!! Just apply a small amount of pressure here. And use a 1" wrench on the plastic part of the body and seperate the two halfs.
- At this point, you get simply reverse. But something that I should note here... There is a seal on the metal half of the sensor base. Be sure to inspect this seal closely or better yet, just replace it. Also, be sure to clean everything really good and lube everything down with CLEAN ATF before putting it all back together.
Part number of the sensor - F-F5RZ-9E371-BC
Cost of part - 44.67 + tax = 47.80
Part was purchused from local Ford Dealer
Reason for sensor replacement - Notice about a week ago that when traveling over bumpy roads, that my speedometer would fluctuate +/- 5mph. Monday, of this week, it progressivly got worse (of course) and the speedo would actually stay at 0 when taking off from a stand still, as well as droping to 0 when I let off the gas. In only 60 miles of driving, on that day, it managed to toast the ATF I had in there, which only had about 5K on it. Yes, I have also changed my ATF as well.
Results -
by Phillip (unisys12)
Last edited by Tony2005; 09/11/05 12:31 AM.
"Always do the cheap and easy ones first."
1996 V6 ATX 96K miles
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I know my car did this until I had a splash shield installed by the dealer. Everytime I would hit a HUGE puddle, it would either die or the O/D light would flash. I can't remember if there was a recall, but they made a special splash shield for this...
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TSB, I believe.
But, yes, there was a special shield made for that exact reason (serp belt slippage, dying, loss of PS while driving, etc)
You have to purchase it, they won't cover it at all, but its available.
Ray
'99 CSVT - Silver #222/276
In a constant state of blow-off euphoria.
Originally posted by Kremitthefrog:
I like to wear dresses and use binoculars to watch grandmas across the street.
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"Always do the cheap and easy ones first."
1996 V6 ATX 96K miles
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Originally posted by Ray:
TSB, I believe.
But, yes, there was a special shield made for that exact reason (serp belt slippage, dying, loss of PS while driving, etc)
You have to purchase it, they won't cover it at all, but its available.
Ray
Luckily I had mine done under warranty, a LONG TIME AGO! 
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Thanx for the input regarding the splash shield. Since I live out in the desert, I'll just take it slow thru the rare puddles.  I'm going to try to test the EGR today and see what happens. Stay tuned...
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Had a similar problem. Installed the splash shield kit and problem is no more......you would think this would have been included from the beginning.....
Bob
An ounce of prevention provides a pound of cure!
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