I did a search but couldn't find a specific answer for this. I've been a GM/Chevy most of my life but I just bought my first Mopar. Specifically, I picked up a 1990 W150. It has an automatic with an electronic overdrive switch on the dash. I don't know much about what the drivetrain options were for these trucks so I was wondering if you guys could offer some insight here.

Could somebody tell me what transfer cases and transmissions were offered in these trucks (and maybe what the shift patterns are for my particular transfer case as mine is missing the map on the shift ****)?

I have managed to learn the engine code is Y for a 318 and Z for a 360 but that about all I could find that was definitive. Mine is a 318 Y code by the way. Thanks.

 

You have an A518 trans and np241 transfer case...

In 1990 Dodge trucks only came with 318, 360, or diesel.

As for transfer cases that will fit: You have a great x-fer case now the only other real option to replace it might be a np205 from a 3/4-1-ton truck (with 4500lb D60 front axle) up to 1993.

What are your plans for it?

 

Thanks for the input. My only real plans for it are to make sure it doesn't rust away from under me lol! I'm off to a great start with that one considering the floors and rockers are solid.

Other than that, I'll just be driving around town, towing, very minor offroading and using it for driving in inclement weather. Offroading will be light compared to what I see others doing like hardcore mudding or rock climbing.

I have a list of things I need to work on like figuring out why the ABS light is on, why the odometer is isn't working but the speedometer is, why the fuel gauge isn't functioning, what the drivetrain vibration is and fixing the sloppy steering. Oh, and getting some real wheels/tires for it.

 

i would guess if your speedo works but your odometer does not work then something in the speedo might have broke. fuel gauge not working is most likely cause by the sensor in the tank be dirty. it might start working with a couple of full tanks of gas. i would not worry about the abs. it is most like the sensor on the rear axle but the abs systems on these trucks are almost useless and not worth fixing. maybe just unplug the abs module that is behind the glove box or remove the light bulb.

 

Welcome to the world of the best line of trucks around. I have had them from a 1965 all the way to a 2005 and many in between. I used to buy them because I loved them and they were cheap because they didn't hold their value. Then the word got out how good they were and they started looking better and they weren't cheap anymore but I still love em so that's what I drive. There weren't many options for drivetrains in the 80's and early 90's just the automatic and a regular 4 speed in the 4X4s and a 3 speed OD in the 4X2s (some years). Use the search options and you will probably find all the info you need and you won't get harassed for asking a question that has been covered a LOT.

 

Thanks for the help. The previous owner said the fuel gauge worked before he had the fuel pump replaced. I guess I'll have to drop the tank and take a look inside myself. Looks like I'll be removing that ABS module and looking for a new speedometer soon!

 

I had a first gen truck (77 I believe) that the fuel gauge seemed like it would hang up sometimes. If I would fill it up and drive over some bumps to slosh the fuel around it would eventually start working. Might work.