The Code Culprits

Reply Subscribe

Thread Tools

Search this Thread

Sep 23, 2014 | 08:32 AM

Jose A.

Thread Starter

Fleet Mechanic

Joined: Apr 2003

Posts: 1,460

Likes: 6

From: Florida

The Code Culprits

finally found the reasons for the two Codes in my '97 4.0

yes, I know, took a while, but I am not an expert like you guys.

here are the culprits: Code P401 DPFE Sensor, found it on eBay. (The metal case sensor, nos)

Code P1443 Evap system Purge Sensor (also eBay)

Finally, CEL is off after replacing both sensors above.

Now I have to figure out the REAR ABS light, still ON.

Sep 23, 2014 | 05:20 PM

xlt4wd90

Lead Driver

Joined: Sep 2003

Posts: 7,013

Likes: 205

From: SoCal

I've seen many cases of test errors pointing to these devices. Was it because the EGR was badly designed/implemented on the Aerostar's first and only year to use it?

Sep 23, 2014 | 05:28 PM

Jose A.

Thread Starter

Fleet Mechanic

Joined: Apr 2003

Posts: 1,460

Likes: 6

From: Florida

Quote:

Originally Posted by xlt4wd90

I've seen many cases of test errors pointing to these devices. Was it because the EGR was badly designed/implemented on the Aerostar's first and only year to use it?

don't know but I never had CEL codes with my 1992.

Sep 23, 2014 | 07:35 PM

87&97Aerostrar

Senior User

Joined: Aug 2014

Posts: 269

Likes: 0

From: Florida

My 97 3.0 has had a piece of black tape over the CEL for five years. No noticeable difference in performance or gas mileage.

Sep 23, 2014 | 08:17 PM

Jose A.

Thread Starter

Fleet Mechanic

Joined: Apr 2003

Posts: 1,460

Likes: 6

From: Florida

the CEL is a conspiracy to make money from car owners

Sep 25, 2014 | 04:41 PM

jetfiremuck

Mountain Pass

Joined: Oct 2002

Posts: 205

Likes: 0

From: Jaqcksonville

I had replaced 2 and finally gave up. The issue is that moist exhaust when cold and temp changes seem to ruin them. I checked my egr with a vac pump and it stumbles the engine so its working. I too plugged the egr vac hose over 100k ago, no issues so far.

Sep 28, 2014 | 10:25 AM

Kruse

Fleet Mechanic

Joined: Mar 2004

Posts: 1,529

Likes: 35

From: Kansas

I had to replace the same item on my Mustang a few years ago. I can't figure out what they put into those things to make them so expensive. Even the generic brands, which I don't recommend, are expensive.