Compression Ignition Addict
Join Date: Mar 2010
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Code problem solved.
Posted the other day about a code problem I's having on a 99 7.3.
Had a long term cold miss that dissappeared when warm.
replaced four injectors 2,3,5 and 8. After installation buzz tested injectors
and kept getting 1272,73,75 and 78 codes. How could I have four injector codes and truck was running great? I had someone else scan it they got same codes, they saiad wiring or IDM was going bad? (Yeah right).
I rechecked injectors and UVCH externally using a adapter I made, all checked good. I did several hours of inline reading and found there's a sequence you have to use sometimes when codes won't clear out of the IDM.
I performed the reset sequence and NO more codes buzz test passed.
I have read lots of post online and this seems to be a problem. Most have wound up buying harness's and IDM needlessly. If it runs good don't always believe the buzz test.