I cleaned the valves about 2 weeks ago.
Followed the instructions of a write up I found on the site.
It was pretty straight forward and easy to do.

After putting everything back together I got the code p0444 and p0444"p" (pending). I drove it around some and noticed it wasn't getting any boost.

So i pulled everything back apart and found vacuum hose which ran from the turbo area to the senor undone and the vacuum hose to the canister undone (the sensor is underneath the intake manifold on the left side that hangs from the rubber bungee). So i plugged all the hoses back up and drove the car. Car pulls hard through out the gears like when it was new.

Only thing is, is that the codes are still showing (p0444 and p0444p).
Every morning the car starts rough.
If I clear the code it goes away and doesn't come back on until you restart the car.

Any suggestions?

Thanks in advance.

 

up?

 

Yep, I did as well, accidentally removed the vacuum hose,and "no boost".I put the hose back to the place and removed the cell.No errors,car runs normally.

 

Thanks for the response.
The boost is back but I cant get rid of the cel codes.
Going to remove the intake manifold again and double check all the hoses for cracks.

 

You have to erase those codes with an OBD2 scanner or a Scangauge, if you want them gone right away. If you've fixed the cause, they won't be back.

Or you can wait for 30 or 40 start cycles (I've forgotten how many) and they should go away by themselves.

Dave

 

Thanks Dave!
I've cleared them with the scanner and they dont return until I restart the car.
I've driven 300 miles without the sensor coming on. Its only once I stop and restart the motor.

 

Just to help understand what it is.

• Fuel tank.
• EVAP vent solenoid.
• Fuel pipes and hoses.
• Fuel vapor lines.
• Fuel cap.
• EVAP canister.
• Purge lines.
• EVAP canister purge valve.
• EVAP service port.

• The evaporative emission system is probed by applying vacuum to the EVAP system and monitoring for a vacuum decay.
• The engine control module (ECM) monitors the vacuum level through the fuel tank pressure sensor signal.
• The EVAP canister purge valve and the EVAP vent solenoid are turned on at the nick of time, allowing the engine to suck up a small vacuum on the entire EVAP system.
• After the requisite vacuum level has been obtained, the EVAP canister purge valve is switched OFF, locking the system entirely.
• If sufficient vacuum level cannot be derived, a large leak is indicated. This can be caused by the following conditions :

1. Missing or faulty fuel cap.
2. Disconnected or flawed fuel tank pressure sensor.
3. Disconnected, damaged, pinched, or blocked EVAP purge line.
4. Disconnected or erroneous EVAP canister purge valve.
5. Disconnected or faulty EVAP vent solenoid.
6. Open ignition feed circuit to the EVAP vent or purge solenoid.
7. Damaged EVAP canister.
8. Leaking fuel sensor assembly O-ring.
9. Leaking fuel tank or fuel filler beck.

Any of the above conditions can set DTC P0444.

 

Thanks.
Going to recheck all the hoses I messed with during the intake manifold removal.

 

I had this same problem. It turns out the connector plug for the tank venting solenoid (mounted under the intake manifold) was making very intermittent connection. (The actual metal contacts that transfer the signal, not the plastic plug body which still clipped on the solenoid just fine).

When I disassembled the plug I found the contacts had lost their springyness. So they just slid on the solenoid pins rather loosely. Even when I bent the contacts in the plug to bite harder, they would just go back to being loose after one plug and unplug.

My solution was to solder a new connector on the solenoid pins and the cable.