Re: 02 Grand Caravan check engine light
[Re: 68SportSatvert]
#946740
03/08/11 11:48 PM
03/08/11 11:48 PM
|
Joined: Jan 2004
Posts: 27,347 Today? Who Knows?
1_WILD_RT
Management Trainee
|
Management Trainee
Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
|
What typically is thought of as a fuel cap code is actually a code to indicate a leak in the evap system.... The gas cap is part of that but so is many feet of vacuum hose, the fuel tank, a vapor storage tank... It won't effect drivability but if you have emissions testing it won't pass with a light on....
"The Armies of our ancestors were lucky, in that they were not trailed by a second army of pencil pushers."
|
|
|
Re: 02 Grand Caravan check engine light
[Re: 68SportSatvert]
#946743
03/09/11 12:19 AM
03/09/11 12:19 AM
|
Joined: Jan 2004
Posts: 27,347 Today? Who Knows?
1_WILD_RT
Management Trainee
|
Management Trainee
Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
|
The way it's typically handled it to use a smoke generator to force smoke into the gas tank & pressurize the system... it will leak from the problem area.... A guy with Dodge dealer experience may know of a common problem area like a fitting that cracks.. Might try a google search for the failure code & your vehicle yr/make/model..
"The Armies of our ancestors were lucky, in that they were not trailed by a second army of pencil pushers."
|
|
|
Re: 02 Grand Caravan check engine light
[Re: Wicked49670dart]
#946750
03/10/11 02:51 PM
03/10/11 02:51 PM
|
Joined: Feb 2010
Posts: 1,377 Ohio
Todd
pro stock
|
pro stock
Joined: Feb 2010
Posts: 1,377
Ohio
|
Also check the evap test port (has a green cap on it the size of a valve stem cap) located between the air cleaner housing and the engine. The hoses that are on either side of the test port crack. Also take a good look at the fuel filler tubing from the gas cap to the fuel tank. They like to rust out especialy up around the end of the tube by the gas cap. By the way the evap canister is located on the left frame rail behind the front subframe and in front of the fuel tank.
Last edited by Todd; 03/10/11 02:54 PM.
|
|
|
Re: 02 Grand Caravan check engine light
[Re: Todd]
#946754
03/11/11 09:19 AM
03/11/11 09:19 AM
|
Joined: Jan 2003
Posts: 515 Bolingbrook, IL
HemiRunner
super street
|
super street
Joined: Jan 2003
Posts: 515
Bolingbrook, IL
|
Common mini van evap problems are the LDP (leak detection pump) or lines. Evap canister site right under the steering rack on the cradle. Rack leaks fluid on top of it. Connections to canister are rubber & crack. Solenoid mounted to right front core support & has two lines coming off & need to be checked for cracks. One goes down towards the canister & other to the intake. Smoke & scanner are the best ways to find evap problems, but you checking all lines & connections are a good start. Also look at gas cap seal/o-ring. If dry & cracked could be the source as well.
Blown & Injected, need I say more?
71 Road Runner
04 Dodge Ram 2500 4x4 CTD
|
|
|
Re: 02 Grand Caravan check engine light
[Re: 68SportSatvert]
#946762
03/18/11 08:27 AM
03/18/11 08:27 AM
|
Joined: Jan 2003
Posts: 515 Bolingbrook, IL
HemiRunner
super street
|
super street
Joined: Jan 2003
Posts: 515
Bolingbrook, IL
|
If you're having trouble finding the components, ask one of the guys working in the shop at the base, some may be ex mechanics, at least they were at Ft Bragg. If you check all lines & gas cap seal & don't find anything, it could be a failing LDP(leak detection pump), that is a common problem. The base may also have a scanner & smoke machine to run the tests on the evap system that you could use. To make matters worse, it could be an electrical problem, such as a broken wire at the purge or LDP or the ECM not commanding them on/off, but those are a lot less common.
Last edited by HemiRunner; 03/18/11 08:32 AM.
Blown & Injected, need I say more?
71 Road Runner
04 Dodge Ram 2500 4x4 CTD
|
|
|
Re: 02 Grand Caravan check engine light
[Re: 68SportSatvert]
#946764
03/20/11 12:02 PM
03/20/11 12:02 PM
|
Joined: Jan 2003
Posts: 515 Bolingbrook, IL
HemiRunner
super street
|
super street
Joined: Jan 2003
Posts: 515
Bolingbrook, IL
|
P0442 - Evap syst (small leak)
P0455 - Evap syst (lrg leak)
These can be tricky to track down without the right tools. Those hard plastic lines can become brittle over time & crack. You didn't mention, but if any fuel tank or pump wokr has been done recently, you want to check the line connections to the pump or pump sending unit o-ring. If no leaks from lines, filler tube, gas cap, etc it could be one of the solenoids not sealing properly when it is supposed to. GM's are notorious for canister vent valves not sealing or failing all together.
Blown & Injected, need I say more?
71 Road Runner
04 Dodge Ram 2500 4x4 CTD
|
|
|
|
|