I had my rear main seal replaced but they had to remove my transmission and exhaust to do so. Once they completed the job the check engine light will not go away. Any ideas what is causing this and how to remove the check engine light? Thank you Cheers
How to Turn Off The Check Engine Light?
If you're performing this procedure in an effort to pass an
emissions test when the check engine light or service engine soon light
is on or illuminated, read on and in detail to learn how the check
engine light reset procedure works.
You may have already read information describing how to turn off
the check engine light or service engine soon light prior to the
emissions test in order to evade the smog inspection. By turning off the
check engine or service engine soon light, in actuality deleting all
emissions data from your vehicle, the smog machine will not know your
vehicle has or has had emissions faults.
This method will NOT work. We will describe the reset or
"turn light off" procedure so you may understand the OBDII emissions
testing process and how the check engine light or service engine soon
light apply to the emissions test.
Perform procedure at your own risk!
Step 1. Locate your vehicle's battery. Disconnect the 12v
positive cable (red wire) from battery terminal (+). Leave it disconnect
for 5 minutes. While the battery is disconnected, cycle the ignition
switch to ON position 3 times.
Step 2. Insure ignition switch is OFF. Reconnect the battery 12v positive cable (red wire) to battery terminal (+).
Step 3. Cycle ignition switch to
ON position and wait 1 minute, then start your vehicle. Check Engine
Light or Service Engine Soon Light should be reset and turned OFF.
Step 4. Drive your vehicle for one week under normal
driving conditions. During this period the emissions computer is
gathering data and re-learning your vehicle's emissions components and
systems. The emissions computer OBDII (on-board diagnostics) system must
complete at least one drive cycle (in some cases two or three). A
drive cycle is a sequence of internal tests which the emissions computer
runs while your vehicle is being driven. This insures all emissions
systems are functioning properly. Proper "readiness flags" are set as
the computer completes it's cycles. Test cycles are unique to a vehicle.
Certain cycles run under very strict parameters, and may require
extended driving time to trigger on. Cycle data and readiness flag
information is available through your dealership's service department.
The data vary widely.
Step 5. Take the smog test. Important
Note! Your vehicle might not be completely ready for the smog check
inspection. Required parameters may have not been set by the emissions
computer.
Passing the Emissions Test - What are my
chances of passing the emissions test after resetting the emissions
computer and turning off the service engine soon light or check engine
light?
A slight chance of passing the emissions test after a
reset does exist, but it is very slim. The trick is to get your vehicle
smog checked before your engine computer detects the check engine light
illuminating trouble code, and only after the required readiness flags
have set. The chances of the engine computer setting the required
readiness flags before detecting the trouble code and illuminating the
check engine light are slim to none. And so our opinion... time is
better spent finding a reputable smog check repair station to diagnose
the check engine or service engine soon light, then time spent trying to
avoid detection and/or repairs.
Even after evading check engine trouble detection, passing the
emissions test will require your vehicle's exhaust sample, which will
be collected by the smog machine, fall within California Air Resource
Board specifications, and all required emissions components be
functioning properly. Passing the entire smog test requires your vehicle
pass the visual, functional, and emissions
portions of the test. One may be able to hide trouble code information
by deleting data, but the vehicle's exhaust will not be able to hide
high emissions.
Testimonial: "Thank you Brian for that. I am in Australia. Not sure if that all applies to me. But not happy bout this hopefully we can solve the issue. I love this website you boys are just awesome!! :) hahaha Cheers Linda"
Take it to autozone or another place like it and have them read the codes and tell us what they are.
Testimonial: "Thank you for the prompt response. The scary thing is my car is at a mechanics. They have had it for 2 days and they are trying to work it out. I need my car so I am doing my research to solve the problem. "
SOURCE: wrangler check engine light
If the light was flashing when it came on, then it means your engine is misfiring.
A solid light can mean anything from a loose/faulty gas cap to a transmission issue.
This
light comes on when the computer detects a
fault of some sort in its diagnostic tests. If it keeps detecting this
issue, the light will remain on. If the light turns off, then it has
detected that the issue may no longer be present.
In
order to find out what the exact reason was for your light, You need to
have your car computer scanned to retrieve the code that
the computer would have stored when the light triggered. Most garages
will do this free of charge. The code will tell you what may have
caused the light to initially turn on.
SOURCE: cost to replace rear main seals on 2001 jeep gr. cher. ltd.
Actually yeah you are in luck that combination only requires dropping the oil pan. The seal is actually fairly easy to do it yourself, if your inclined. Parts about $20.00 and it's book rate is 5 hours. around here shops charge around $85/hour. About $500.00 out the door or under $50.00 if you want to get greasy. Here's a good picture guided step by step on a Jeep CJ with a 4.0 liter, yours is pretty much the same:
http://jeepin.com/features/rearmain/index.asp
SOURCE: my automatic transmission solenoid is causing
Most transmission solenoids are located within the pan. If you replace the solenoids then it would be a good idea to change out the wiring harness that runs from the main transmission plug to the solenoids. Just lower the pan and drain it. Then, remove the one or two bolts that hold the solenoids in place. Replace the solenoids, wires, transmission filter and fluid at the same time (since you're already there). Make sure that you use a new pan gasket when you put the pan back on or it will leak fluid. Good Luck!
Testimonial: "very helpful"
SOURCE: proper way to check transmission fluid
You always check transmission fluid with it running and in park,If your dip stick has a place on it for cold use it cold,Other wise it should be on the full mark,you might want to look under your jeep for any new leaks!
Testimonial: "thanks alot, thats what I thought, no leaks that I can see, I guess they didn't fill it all the way back up"
SOURCE: check engine light, vapor canister, have any idea
I would start with the gas cap replacement and see if the issue resolves itself. If you do have a problem with the EVAP (canister) system, it may require tools the average person does not have to help diagnose and correct/repair.
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