egr insufficient flow?
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egr insufficient flow?
I have an 04 ex, get egr low flow DTC. Cleaned egr, not very dirty. Used snap on ethos scan tool not able to get ebp reading, ebp sensor is clean and tube is clear. I did notice that the IAT is at ambient temp but IAT2 is 24* warmer, this stays the same cold soak and warm, is this a problem? CCV has o-ring in place. Not sure on flash that it has. Any other ideas?
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iat2 is hotter then iat1 even after sitting 12 hours? something is not right there. iat1 is part of the maf, the maf heater wire should have iat1 a few degrees over iat2 at koeo coldsoak.
also check to make sure airflow arrow on maf is facing correct way.
remove iat2 and clean it.
then you also have ohm checks for the sensors you can do.
also check to make sure airflow arrow on maf is facing correct way.
remove iat2 and clean it.
then you also have ohm checks for the sensors you can do.
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Yeah, parked for 20 hours or so. IAT2 was 20-24 warmer than ambient, IAT was ambient. Cleaned iat2 and checked, still same. Maf pointed correct way and free of oil and debris. What are the sensor ohm tests? Not a tech, don't have specs. Thanks for the info.
Rick
Rick
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or maybe i could be barking up the wrong tree.
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btw, i forgot to add, did u check ur egr while plugged in? wat i mean is, hook ur egr up and keep it out of its housing, and run the engine and have someone floor the accelerator. the valve on the egr should be moving. if not, it may be a faulty one, and then its time for a new one.
ok, i'm done now. back to the experts now.
ok, i'm done now. back to the experts now.
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if u have only 1 alternator, (from wat i read) it's not advisable to idle tat long. the only diesels tat enjoy idling are those wif a 2nd heavy-duty alternator. jus my 2 cents worth. maybe tats putting extra load or jus screwing wif ur readings.
or maybe i could be barking up the wrong tree.
or maybe i could be barking up the wrong tree.
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i guess tats why folks install a 2nd alternator under the 6.0 engine. there are other uses for a 2nd alternator, but mostly for idling.
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@ 01f-250/04ex, also after u check ur egr valve to ensure it is working, pls check ur ficm voltage. there is a tech guide on wat exactly to look out for.
if ur temps are STILL running weird, the next thing i would look into is ur egr cooler or oil cooler or both. one might be busted or both busted or about to fail.
take it one step at a time and u'll be jus fine. it sounds frustrating. i've been there. i know how it is.
if ur temps are STILL running weird, the next thing i would look into is ur egr cooler or oil cooler or both. one might be busted or both busted or about to fail.
take it one step at a time and u'll be jus fine. it sounds frustrating. i've been there. i know how it is.
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u might wan to have it checked if it has been flashed and updated lately. like lenzhotrod said, the flash might correct certain procedures. i needed to have mine flashed in 3 areas when i brought mine in.
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Haven't had a chance to pull egr and test yet, is that with the engine running? With the IAT2 not being near ambient temp is that a concern? Might get a chance to do more tests tomorrow if not it will be next weekend. Mom used to work at Ford dealer so might be able to get flashed for free, she is checking on that for me.
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