Hey everyone!
I just bought a 1998 Dodge Ram 1500 SWB 5.9 with 150k
Im having a few issue's with it.
When i first start my truck i sometimes have to give it gas to keep it started and sometimes at at stop sign it dies.
Ive heard its my throttle position sensor?
Any info on that?
Second.
Im getting some rear end noise.
It not a grinding noise its just a whine..
Getting really annoying.
I checked my fluid its all there.
The fluid color is pretty brown so im gonna go ahead and change it
I was wondering what weight and brand should i use and any thing to add to the gear oil
this truck is a 2 wheel drive truck with the stock rear end i believe.
thanks any help is appreciated

 

Still have the stock gears in it? Got a limited slip? Just about any gear lube will do, 80/90, or 75/140 I think is recommended. If you have the LSD, you need to add a friction modifier as well, unless the lube you by specifically states it has it in there, or, is for use with Limited Slip differentials.

Test the TPS, and see what it has to say. Need an anolog VOM for that..... you can prolly rent one from some local auto parts store if you don't have one.

 

I can get one what should it read

 

And how do I find out of I have ls

 

Might be a tag on the rear axle that would say so.

Also, might be a tag under the hood somewhere, or, on the drivers door frame?

Or, just get a build sheet from Chrysler......

When you test the TPS, there are two terminals you want to pay attention to...... grab the service manual from the faq section here for wiring diagrams..... there isn't any specific value you are looking for when testing.... just that resistance starts at some value, and sweeps consistently up/down the scale as you open/close the throttle. If it jumps around, TPS is bad.

 

It could be your tps or your iac. IAC is cheap get a new one from the dealer and swap them out. As far as the rearend whine its likely the pinion bearing. Does it just whine under acceleration and the second you take your foot off the gas it stops?

 

If you open the glove compartment there should be a sticker with the rear end info.

 

Ya it stops when I let off. How hard is it to do yourself

 

I did it in my '99... Mine is aslo a 2x4 but it has the limited slip so that added just a little extra effort.. I took my time and did a lot of reading up on the torque specs and so forth before I dug into it. Mine ended up being the pinion bearing itself and I decided to do the rest as a preventative thing since I already had it apart. The limited slip can add some difficulty but there is a lot of good information on here if you search a bit. I would say from my experience with my truck that you are having the same problem.

BTW, I had mine apart for almost a week as a couple of the parts I got were wrong and had to order the correct ones. Not to say that you will run into the same problem or anything, just make sure you make a list of all parts that you plan on replacing and make sure they get it for the correct axle.

 

welcome to df.

unless you have a check engine code related to TPS, such as P0123, i'd guess at IAC first. 2 #25 torx screws on the back of the throttle body and an electrical connector. easy to change other than climbing up in there. clean the port inside the well. don't push, pull, or twist the pintle or you'll break it. also disconnect the battery and reset the pcm. also, don't forget the o-ring.

don't throw the old one away until you prove that the new one fixes the problem and that the old one was bad. its nice to have a spare set.