This truck is a completely different story. It wore a stripe package like the Super Bee of old, it was available in only yellow or black, and it kept the dimming light of the “sport truck” flickering when there were no other options out there. While it had no real discernible performance parts on it outside of the big 20″ wheels, the attitude was right. With any reading between the normal, (approximate), 0.5 to 4.5 volts, the computer will deliver fuel based on that reading even though it might be wrong.The Dodge Rumble Bee truck was kind of neat for its time.
#Dodge rumble bee code
It has to go to 0.0 or 5.0 volts to set a fault code and turn on the Check Engine light. Usually they fail completely over the course of less than a day, and their failure rate is extremely low compared to the early '90s, but while they're in the process of failing, they can develop the wrong signal voltage that is still within the acceptable limits. It has the biggest say in how much fuel is commanded from the injectors. If you see the throttle plate inside the throttle body is heavily coated with black carbon, wash that off with carburetor cleaner in a spray can.Īlso look at the map sensor voltage. We don't run into that much anymore with the better fuel additives. That will prove the idle speed motor is working and the air passage isn't blocked with carbon.
You can also use the scanner to run the engine idle speed up to 2000 rpm in 200 rpm increments. Usually that causes other symptoms but you don't want to overlook that. If no misfire is felt, or detected by the computer, you might look at a fuel pressure problem. When slowing down, the computer may not respond fast enough to prevent the engine from stalling. If you find the idle step to be around "50", that is typical of a single-cylinder misfire. The additional clue is often the lack of the idle flare-up at engine start-up. If that works, the brake light switch is out-of-adjustment or has an intermittent contact. Try coasting while holding the brake pedal up with your toes. If you find it on step 0, it hasn't learned minimum throttle yet. For a good-running engine, step 32 is typical. That is the step, from "0" to "256" the computer has placed the automatic idle speed motor to. The thing you need to see is "AIS steps". Then you're going to need a scanner to view live data. To meet the conditions for the relearn to take place, drive at highway speed with the engine warmed up, then coast for at least seven seconds without touching the brake or gas pedals. It also might not give you the normal "idle flare-up" to 1500 rpm when you start the engine. The Engine Computer lost its memory and has to relearn "minimum throttle" before it will know when it must be in control of idle speed. A lot of Volkswagens end up being skidded in park onto a flat bed truck for a trip to the dealer to have numerous computers unlocked. They have a lot of tricks designed in to cost unsuspecting owners money after the sale. It can cause a real lot of misery and expense on Volkswagen, BMW, and General Motors vehicles. The biggest reason to get used to not disconnecting the battery doesn't apply to Chrysler products. Those "look-up tables" will start to be rebuilt as soon as you drive the truck, and you won't notice anything happening. Doing that became common many years ago with the very high rate of failures on GM vehicles. Codes will erase automatically after 50 starts if the problem doesn't come back, and there is nothing to "reset" in the Engine Computer. Disconnecting the battery is never a good idea.
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