1999 dodge durango new motor bad mpg
Record Breaker
Joined: Dec 2006
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From: NY NY
After disconnecting the neg, making sure it's not touching any metal, turn the key all the way like you're starting the engine. Hold that position for 15 seconds then release the key and take it out. Reconnect the neg wire after cleaning the contacts. Your PCM should have been reset.
Hall Of Fame
Joined: Jun 2005
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From: Riverton, UT
This is what I have set up in here https://dodgeforum.com/forum/1st-gen...ine-light.html but everyone does it a little different:
Question?????? How many gallons did you get?
To reset your engine codes:
Remove the negative terminal of your battery (10mm wrench).
Turn your ignition key to START and hold it there for about 15 seconds.
Turn your ignition key to OFF and remove it.
Connect the negative terminal of your battery.
Start but do not hit the throttle. Idle for about 10/15 seconds then turn off.
Restart the truck and drive as usual. It will take at least 12 starts and 48 miles to fully retune the computer. Hard Codes leave a shaddow for 40 full cold starts.
Remove the negative terminal of your battery (10mm wrench).
Turn your ignition key to START and hold it there for about 15 seconds.
Turn your ignition key to OFF and remove it.
Connect the negative terminal of your battery.
Start but do not hit the throttle. Idle for about 10/15 seconds then turn off.
Restart the truck and drive as usual. It will take at least 12 starts and 48 miles to fully retune the computer. Hard Codes leave a shaddow for 40 full cold starts.
and i filled it and it gave me around 230 miles then the empty light turn on lol this is bs $60 damit
Hall Of Fame
Joined: Jun 2005
Posts: 14,228
Likes: 19
From: Riverton, UT
230 miles divided by 20 gallons= 11.5 MPG Average
Hope you replaced the spark plugs with the cheapo $2 Champion Copper spark plugs? These are OEM and a key to figuring out if there is a problem.
Clean the Throttle Body and IAC: https://dodgeforum.com/forum/1st-gen...ttle-body.html
Reset the PCM: https://dodgeforum.com/forum/1st-gen...ine-light.html
I doubt your issue is a MAP sensor.
Hope you replaced the spark plugs with the cheapo $2 Champion Copper spark plugs? These are OEM and a key to figuring out if there is a problem.
Clean the Throttle Body and IAC: https://dodgeforum.com/forum/1st-gen...ttle-body.html
Reset the PCM: https://dodgeforum.com/forum/1st-gen...ine-light.html
I doubt your issue is a MAP sensor.
Thread Starter
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Amateur
Joined: Dec 2010
Posts: 49
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230 miles divided by 20 gallons= 11.5 MPG Average
Hope you replaced the spark plugs with the cheapo $2 Champion Copper spark plugs? These are OEM and a key to figuring out if there is a problem.
Clean the Throttle Body and IAC: https://dodgeforum.com/forum/1st-gen...ttle-body.html
Reset the PCM: https://dodgeforum.com/forum/1st-gen...ine-light.html
I doubt your issue is a MAP sensor.
Hope you replaced the spark plugs with the cheapo $2 Champion Copper spark plugs? These are OEM and a key to figuring out if there is a problem.
Clean the Throttle Body and IAC: https://dodgeforum.com/forum/1st-gen...ttle-body.html
Reset the PCM: https://dodgeforum.com/forum/1st-gen...ine-light.html
I doubt your issue is a MAP sensor.
spark plugs i replaced with autolites i believe i did also reset the ecm as your instuction say now another question for some reason i have no heat blowing i did replace the t-stat also with the build then i got a coolant flush done and nothing still no heat just a lil bit n i dont smell coolant so i dont think the heater core is bad
Hall Of Fame
Joined: Jun 2005
Posts: 14,228
Likes: 19
From: Riverton, UT