I changed out parts for 3 months and searched online and asked on forums. I broke down and brought to dealer. After a month of no luck I should've done it. Perhaps it's worth paying 80 for a diagnostic test?
Kept getting a code from trans lately. P0841, trans pressure sensor "a". Low/reverse. Took to a dealer they found trans temp was -3. Was running on freeway for 30 min and was not that cold out. Needed to have solenoid pack replaced. Included solenoid, trans temp sensor, trans pressure sensor...
2003 Jeep Liberty Sport 3.7L 4x4 127k miles
Check Engine light came on. Checked the code, P0841: Low/Reverse (LR) pressure switch rationality fault.
I don't know JACK about transmissions so I turned to my Haynes manual for the code which explained: transmission fluid pressure sensor/switch...
Tested fuel pressure. Pump is strong. Had an issue with holding pressure though. Only before being run. After running pressure held with key on engine off though. Taking it to dealer Monday.
Tensioner on tensioner and idle pulley is bad. 30-60 $$ for part. Just in case anyone is havin an issue. Had some coworkers assist. Put screw driver on the stationary portion and found the crazy vibration to go with the noise. Internally failing. Hope this helps!
Put old tps back in. New symptom gone. Either new us bad or old is worn down so it doesn't catch and fix the error the new one is showing. Going to do a fuel pressure test ASAP. Please help if you have any ideas for me. Thanks
Transmission fluid flush n filter change would include transfer case fluid change as well right? Im a trans dummy n had Midas do a transmission flush n filter change. Want to check.
TPS replaced. Symptoms changed. Idles high in park and neutral and is not consistent either. Will change speeds. It idles a little more healthy in drive and reverse 8k rpm or so rather than 6k. PCV Valve going bad is like bad or missing vacuum line. Could explain the problem with the stalling in...
Do not use top tier gas. My mechanic, also has a degree in engineering and studied on effects of higher octane for engines that do not require higher octane does not equal better performance if gas mileage. This is all I can toss in the hat about octane ratings. I've cleaned the throttle body...
Yeah I'm just gonna let her be the way she is with this one. Now onto bigger fish. If anyone is interested I have another thread up about a rattle... Still workin on that noise. Thanks all!
As for the induction cleaning I've done seafoam in through the gas as well as through a vacuum hose just after the throttle body to get the pistons, cylinders and head. I have also heard that you're not supposed to clean the intake portion after the throttle body due to lubricants on the walls...
Piston Slap:
A slapping noise in the engine caused by piston wear. This sometimes happens when engines are cold, and can go away when the engine warms, the metal expands, and tolerances between parts change.
As I posted earlier in this list (#11 I think it is), it could be from abnormal...
So this is my next move... Going to first replace the TPS then if that's a no go I'll be replacing MAP sensor. Any advice before I jump in and start replacing parts?
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