1998 Venture. Just had the intake gaskets replaced and a day after the repair the CES light came on and gave me 2 P0440's. Thought it could be a fluke seeing as I usually get one or two of these per year and never amount to anything. I erased the codes now 2 days later it's on again and the same exact codes. These were the conditions each time it happened. The van was driven in the morning and afternoon. Then parked in the garage. About 45 minutes after parking in the garage it was started again and that's when my wife noticed the light. It does not appear like it went on while driving. It was after it was off for a short time then when restarted is when it came on. We will bring it back to the place that did the service tomorrow. But if anyone can point me to a solution tonight it would be greatly appreciated. Thanks in advance.

We will bring it back to the place that did the service tomorrow.

What did the shop say that did the work?

The code is for the EVAP system. This is the evaporative emissions control system. Its job is to suck off fuel vapors from the tank. To do this, it has an air pressure sensor inside the tank a purge tank near the fuel tank, and a valve and vacuum system up on the engine behind the spark coils.
Each of the parts need to work properly. One common failure is when the power wires to the solonoid fail. These wires run through the bulkhead connector that runs through the floor behind the driver's seat. The connector gets wet (from above) and corrodes. Then the fuel pump and the Evap system become flaky. Code po443 sets when this wire is the problem so its not your issue.

The 440 code is the general problem code for the system. If a vacuum line was leaking, thats a separate code. You need to inspect each of the parts to determine which is bad.

John

I have searched this and other message boards for things to look for on the Van and have not found any obvious problems. One thing I did do when I had a slow leak code a while back, was to take a Q-tip with a little motor oil and rub it on the rubber seal of the gas cap. It seemed to work, So I did this again today.

Didn't get it to the shop yet. Tuesday (the day after the manifold gasket work) when the light came on my wife was driving it. She called me in a panic so I had her go home and hook up the scanner. When she found it was P0440 I told her to clear the code and we'll see if it turns on again. Then when it came on 2 days later, she was driving it again, and reset the code without telling me until after the fact. How many wives reset their OBDII codes? She was also driving it when the check engine light started flashing leading us to the gasket replace. Thank goodness she was smart enough to stop driving it. What ever happened to the gasket was causing a serious missfire in cylinder number 3. Anyway the shop wants the van with the service engine light on and the codes in the computer. So we're going to wait until it comes on again. I've seen this code several times before over the years and have always reset it and I don't see it again for many, many months. I'll report back when I get some results.

Anyway the shop wants the van with the service engine light on and the codes in the computer. .

http://www.herzogbr.net/images/butt/nobull.gif

The code is ALWAYS in the computer, once it has lit up.

If you're rich, and ain't worried about the shop walkin' over you and takin' your money, then send me some?

Ouch cbec1999, that almost hurt. :iceslolan Actually when I called the shop he did say the codes would be in the computer but still would prefer us to bring it in when the light is on. Anyway that brings us to today. I got out the manual and read all I could about the evap system and put the thing up on ramps. And quickly found the problem. The purge solenoid located on the back of the block has several vacuum type lines running into it. One of them was disconnected. In a very small defense to the shop they probably did not even notice it. The hard plastic line that was disconnected from a rubber hose was probably bumped several times during the gasket install and was knocked loose. And they would have never noticed it unless they went underneath the thing like I did with a flashlight. So I simply reached up with one hand and pushed them back together and cleared the codes and we are good to go. I will be calling the shop to tell them how they screwed up. :evillol: No I'll be nice to them.