mickal2012
Active member
Thank to your reply, i just change The MAF and clear the code and everythings working fine. If the T 21 dont change nothing on transition and engine working, i will pass the T21 update
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Without the recall, the van is extremely tolerant of MAF sensor issues. Basically, without the recall it is possible to have a non functioning MAF, and possibly a non functioning O2 sensor and the van won't care at all. Those sensors are only used to verify emissions performance, NOT how the van runs. My understanding is that the van is a "speed density" system. Injection events and motor operation are based on manifold pressure, engine RMP, temp, etc and the ECM calculates how much and when to inject fuel. The MAF is ONLY used to verify that the EGR is working - if some of the intake air the van needs comes from the exhaust (which is the definition of EGR) the MAF sensor senses the intake air through the MAF decrease - this is the EGR check the MAF performs. The van doesn't need a MAF to run, only to do the emissions check. T21 is quite particular about the MAF sensor, and you are far more likely to get a MAF diagnostic code with the T21. Also, once the ECM determines the MAF is bad, and you replace it with a new OEM MAF from your favorite supplier, you need a dealer level scan tool to clear the code (MAF adaptation). Without the recall you can replace the MAF and go happily on your way with no need for a trip to the dealer.
I'm not in total agreement with your description of the various sensors and the interaction.
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vic
Apparently the flash can go bad so the ECM is bricked, but it only happens a small percentage of the time. Mine went fine, but they said they had failures and tried to discourage me from having it done. They said that they would have to find a replacement ECM if the flash went bad. I know there are some here that open up the ECMs and do reflashes. Maybe SOS could fix it too. I think you have to open it up and maybe even unsolder chips to recover it, or at least connect a programmer to something like a JTAG port.
If someone knows more, please pipe up.
Regards,
Mark
Recall was completed last week. So far so good. Been driving it all week and don't notice any difference. I did not need a new wiring harness and they did keep it overnight. They told me the download of software was 3 hours and upload to my ECU 2 hrs., which didn't leave enough time to make sure all codes were okay. Gollings had it ready by noon the next day. I was not able to talk directly to the technician.Visited my local Gollings Chrysler, Dodge... Dealership, Bloomfield Hills, MI, today for the T21 recall. Although my T21 Emissions recall notice said the 'fix' would take 2 hrs. They actually assessed my van during that 2 hrs. I was told that I did not need the wiring harness and that my ECU would be updated then they will perform a test drive and relearn procedure. I need to drop it off next week for an all day fix. Then if they find any issues....it's back to who knows...
...more to come Kim
Just a notation... the software doesn't take 3hrs to download and it doesn't take 2hrs to flash your ECU. It should take 1 minute to download (unless they have a Very slow internet) and <3 minutes to flash the ECU.They told me the download of software was 3 hours and upload to my ECU 2 hrs., which didn't leave enough time to make sure all codes were okay. Gollings had it ready by noon the next day. I was not able to talk directly to the technician.
I would create a new thread for your specific case so that it doesn't detract from this thread.The only periodic code I would get before was the GP open circuit generic one. But it would always go away if I drove it often.
Ideas?
read this. they need to cover the repairsSo I got the T21 recall done (regret) and now my codes look like a damn Christmas tree.
The dealer says that I need a new MAF sensor. Does anyone have any input? I would for sure buy one if I knew it would clear at least one code. I think they are about $180.
The only periodic code I would get before was the GP open circuit generic one. But it would always go away if I drove it often.
Ideas?
For the most part, 2004's were the ones that had their clusters replaced. Also, there was a shortage of clusters. I know there was talk about getting an exemption because of the shortage. Do some research. Call another dealer and see what they say.New California owner of a 2005 3500 (2006 Winnebago View) that I bought out of state. T21 update has not been done. I’m trying to figure out the best approach and have been speaking with the local Dodge dealer (Crown Dodge in Ventura/Oxnard). They are telling me that If issue come up after flashing the update then the instrument cluster will need to be sent out to be rebuilt... Anyone else experience this?
MB has come up with a new add-in "adapter" that corrects the problem. Dodge evidently hasn't gotten the word about it.New California owner of a 2005 3500 (2006 Winnebago View) that I bought out of state. T21 update has not been done. I’m trying to figure out the best approach and have been speaking with the local Dodge dealer (Crown Dodge in Ventura/Oxnard). They are telling me that If issue come up after flashing the update then the instrument cluster will need to be sent out to be rebuilt... Anyone else experience this?
Have you looked here...Who has had a successful T21 flash for there 2004 Sprinter in southern California? Dealership recomendations. Thanks in advance
Ron
I was under the impression that all 2004 Sprinters needed a new instrument cluster, mine did. But perhaps the work-around adapter is now working since new instrument clusters are not to be found.Who has had a successful T21 flash for there 2004 Sprinter in southern California? Dealership recomendations. Thanks in advance
Ron
Recent reports are that the Dodge dealers are not yet aware of the new MB adapter.I was under the impression that all 2004 Sprinters needed a new instrument cluster, mine did. But perhaps the work-around adapter is now working since new instrument clusters are not to be found.
I live in So. Calif. and I took the trip to San Luis Obispo to Cole Dodge because of their familiarity with the T21 Emissions Notice. I am satisfied with my experience with them and would recommend them.
I did, Signal Hill Jeep Dodge, They installed the new harness and flashed the ECM. All good so far, MarkWho has had a successful T21 flash for there 2004 Sprinter in southern California? Dealership recomendations. Thanks in advance
Ron