truck tranny fluid

From : mike cheek

Q: on wed 4 may 2005 143041 -0500 cheekspro@webtv.net mike cheek wrote it started out making wynning noise....changed filter put 4 quarts dodge type oil in...worked perfect for 3 days 150 miles....then got up this morning it made the wynny noise when first started it.....few miles down the road it went out....rechanged oil filer again its working fine again.....dont know how long....any suggestions.... aamco beekeep .

Replies:

From : transurgeon

steve k smk17@cornell.edu wrote i think i found the answer from the dodge archives.. the problem is that the computer loses its learned memory at approximately 10 volts or lower. this means that the computer has lost track of the position that the idle air control motor is in. it no longer knows if the motor is open - closed - or anywhere in between. this is why the vehicle dies as soon as the throttle is let off. it no longer has the ability to control the idle. it would eventually relearn the value if the vehicle was operated through a variety of acceleration and deceleration scenarios however it is easier to replace the faulty battery and reset all sensor minimum values with the drbii. someone might comment on the fact that they can reconnect their battery after it has been disconnected and that it will start and idle fine. why is that so if the memory has been lost my only answer is from experience only not technical knowledge. low voltage is by far worse for a computer than no voltage. it is my belief that the low voltage will cause the processors to develop false values which will result in a variety of problems when trying to start the vehicle. remember that the crankshaft and camshaft hall-effect sensors have a power up wire of 9 volts. even if the engine cranks and the fuel pump could develop enough fuel pressure under 9 volts the vehicle will never start. i have a ram 1999 4x4 1500 quad cab. two days ago the battery went dead because we left the cell phone plugged in to the power outlet im assuming thats how it died. i went out last night and charged it up enough for it to start. but as soon as i would take my foot off the gas the truck would instantly die. it would start back up just fine but would not stay running unless i had my foot on the gas. a friend of mine came over and tested the battery and found that it was only up to 7 volts. i had charged it for about an hour and 30 minutes. is the battery dead dead as in something happened to it where it cant be charged back up to 12 volts and if it is dead would that be the reason the truck dies when i take my foot off the gas the friend also said something about a fuel pressure fuse that may have been blown and thats why it dies but i couldnt find anything like that. im asking because i was gonna go buy a new battery today. thansk for any help. steve .