High Pitched squealing near Bank 2 of of a 2003 ford ranger 3.0L automatic rwd.
Another issue is it has almost no power to the wheels at times, especially from a stop. There are no trans codes. Replaced the rear main seal maybe 6 months ago
Only stored codes were related to bank 2: running Rich codes and all cylinders 4, 5, 6 had misfire codes. After clearing them, they don't immediately come back, or at all. Short term fuel trim looks like -2 to -8 but moves around quickly
At 2-3000 rpm the squealing mostly goes away and engine feels good
Spark plugs have some black on them compared to bank 1
All cylinders testing 150psi dry compression
Changed oil, no metal pieces, little dirty but seems typical for my little ol' truck
Camera gets close to where it sounds like it is from, tough to tell with how high pitched it is:
https://www.reddit.com/r/MechanicAdvice/comments/1gz472t/squealing_sound_not_the_belt/
Well to pinpoint the sound watch my video. Finding a source of car noise Scotty. But that's probably the least of your problems with all those misfires I would assume you probably either have a head gasket that's starting to go out or a problem in the intake manifold where it makes all low cylinders misfire because the air fuel mixture is messed up by leaks in the intake.
Kind of any update to my question yesterday. Took my 2003 Ford Ranger 3.0L for a longer drive and my power significantly reduced over time, with engine light coming on and off / flashing. Could barley get it over 30mph (maybe it went into a limp mode??)
Trouble codes were more misfires on Bank 2 (P0304-6), but also P0171 Lean Bank1 and P0175 Rich Bank 2
Used my not-so-fancy scantool to see the Short term fuel trims were +1/-2 at idle (very rough idle), but were up to +25/-35 when RPMs were at 3000
Stumbled across this youtube video suggesting it indicates a timing chain slip: https://www.youtube.com/watch?v=YYU4wfYUc00
Doesn't give me hope for an easy fix...
@sniakebrw Per forum rules, please post updates to existing topics as a response to your original topic to keep all information about the problem together. Thank you. (Topics merged.)