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Posted on Jan 02, 2017
If you have an EVAP leak, you will get the following codes:
1. P0442 evap emission control system leak (small).
2. P0455 evap emission control system leak (large).
If these codes come up, you need to trace the leak. The most common place for the systems to leak besides the gas cap is at the service port under the hood, the hoses at the purge solenoid, and the hoses around the fuel tank. Check all your EVAP hoses from under the hood , all the way back to the gas tank. You can repair a split hose easily. Buy some 14.5mm EVAP hose at the auto parts store. Just cut the split or cracked section out and attach the new hose.
I can only say that u must fix the code issue and light to pass state emission test, if u reset the light they will know, the system will tell the tester that the system is not ready, this will cause a fail.
Posted on Mar 16, 2009
SOURCE: vehicle failed emissions testing
You need to replace the intake upper plenum gaskets. There is two pieces, a top cover with one big silicone o-ring gasket and a lower half with six smaller silicone o-rings for the individual intake ports. You can buy these as a set, just for this job. Start this job by removing the wiper blades, then release all the screws, (including the ones that support the wiper motor), that hold that big black plastic valence at the back of the engine compartment. Pull that out of the way, you will have to pull the windshield washer hose through it, just disconnect it on the engine side, now you have access to the plenum. It's a pretty easy job now to remove and replace both halves, just a bunch of 8mm screws hold it all together. Take notes or digital pics along the way so you can pop it all back together. My only caution would be; when you have it apart, do not drop anything in the intake port! I always stuff kleenex in these while I'm working in case something slips out of my hands. Also, don't over tighten, it's all plastic. If you don't want to do it yourself, a shop should charge about an hour and a half, plus the codes must be reset and the van driven until all the monitors are ready.
Posted on Mar 26, 2009
It could be any sensor or leak anywhere in the emission system.
The best thing to do is to have a code scanner hooked up to the car to pin point the actual problem. If there ia an autozone or advanced auto near you go there, and tell them you need a code retrieved, if not call different auto part stores to find out if they do that. Takes about 30 seconds to get the code.
Posted on Apr 27, 2009
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The PCM also uses this information in order to manage the fuel system for maximum efficiency. The most obvious symptom you will see is the A/T gear position indicator lights will not come on or come on in the wrong position.
Once this is repaired emissions should pass
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