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Here is what this means...
First of all, you need to understand that the computer on your Dak. LEARNS as you drive. Over the course of driving under differing conditions, it LEARNS the best setting for ignition timings, Idle speed, Shift points (automatic), injection timings and other critical things. These LEARNED datapoints are stored in a "map" which relate the proper settings to external conditions such as throttle-position, ambient-temperature, engine-temparture...etc.
Then, as these same conditions are seen again, the computer can instantly apply the "tweaks" to tune the engine because it proviously LEARNED what the best settings were and stored them in memory. This "memory" is lost if power to the computer is lost. (battery is disconected, computer is unplugged, fuse blows...etc)
Given the above..... we can now understand that "memory standby power lost" means that the power-supply that maintains all of the LEARNED datapoints was lost.
The only way to recover from this condition is to DRIVE THE VEHICLE. Over time, the computer will reLEARN the correct datapoints. The errorcode will reset itself over time.
Does not seen to be as bad when the engine is real cool or after you fill up the gas tank.
I recently rebuilt the oil pump in my 98 Dakota 2.5-liter. But, I can't get any oil pressure. Do I need to prime it first? (is there an easy way?). Or, is there another possible cause? I'm pretty sure the oil pressure sensor is ok. Thanks!
I have a 93 dodge dakota V6. 3.9L
I've been searching for seven years on how to fix the problem.
Any help would be appreciated.
Thanks
Thanks
The 2000 4.7L was available with 2 emmissions packages depending on where your truck was sold.
1) The "standard" emmissions package had 1 catalitic converter and one O2 sensor.
2) The "boarder state emmissions package" had 3 catalitic converter and 4 O2 sensors.
Which emmissions package does your 2000 have?
Since the computer is reporting a "lean" condition... then it is the computer which is telling the injectors to squirt too much fuel (and blow black smoke)
You need to keep looking into why the computer *thinks* the engine is running too lean.... this is usually the MAP sensor or the O2 sensors.
A good diagnostic software installed on a laptop computer can actually show your all the signals going into the computer. (Including the MAP and O2 signals) That is what I use to diagnose these kinds of issues.
As a professionl technician , somtimes you have to think "outside the box". Ask youself what else besides the obvious can cause the engine-computer to *think* the engine is running too lean.
I have heard of a weak battery causing Dakota engine-computer to behave weird.... have you validated that the battery is fully charged and all cells check out with hydrometer?
I only have them put in 5 qts when I get my oil changed now and then I will check it when I get home and add some if I need to.
Hope this helps.
Ron
If you do not beleive it, open the hood and LOOK infront of the radiator.... you should see at least 2 other smaller radiators (one for A/C and one for Xmission)
If you orderd your Dak with the "towing package", you should also find a small radiator near the power-steering pump.
Fortunately the dealer price for replacement is pretty inexpensive. I'd pay $130 rather than do it myself!
Regards,
Dusty
Mine is a very early 2000 (orderd from factory in November 1999) I have also been running ONLY synthetic oil since break-in oil.
I guess I will have to check mine for leaks. With the lower engine-cover in place, there is no visual access from below. Do you have any suggestions on the best way to check for front seal leakage?
On mine I just happen to notice some oil around the front of the oil pan. It never did drip on the ground or anything, so there's no indication that it was a serious leak. I didn't notice a leak at all until 84K. It's at 92K now.
But I'm fussy about such things and replaced it.
Bests,
Dusty
so, when i start the truck, it shimmies n shakes, if you give it gas while still in park, it has a high pitched whine that accelerates and goes down with the engine....can't figure it out....when you drive, it seems to be sluggish, like somethings holding it back, tranny seems to shift when it suppose to but hits hard and winds out a little when goin into 3rd....tranny fluide is full and doesn't look or smell burnt. we recently put on new brakes, rotors (on front), and rims with wider tires off a durango...but do not have a lift on it yet, so the tires rub a little, but they don't seem to be the problem as this is going on when the truck is in park and you give it gas.....
also, it's not throwing any codes....
:sick:
any suggestions on what to try or what it could be? thanks in advance
Keep in mind that car in the other lane is a REAR DRIVE Toyota Supra with a turbocharged, twin-rotor Mazda engine.
That K-car is 4-cylinder FWD WITHOUT nitrous and it can blow away hondas, mustangs and most any other car. It is inexpensive to make those K-cars go fast. (just add turbocharger)