hi there everyone I am new here but through reading posts for the past two days,to trying to figure out the problem I am having, and not finding an answer , i think i have a grasp on how to post .so here is my problem
I have a 96 dodge ram extended cab 1500 reclassified as a 2500 ,318 TBI,auto trans ,and recently it started acting well for lack of a better term screwy,I have taken her to a few places including trany shops and they tell me they cannot figure out what is wrong with it ,i found a few broken vacumm lines and fixed those myself and i have inspected the plenum,replaced the coil,wires,plugs,cap rotor but to no avail the truck is still doing it ... the it that the truck is doing is it runs super sitting in park,no misses, nothing .and when you start out it also runs fine as long as you slowly accelerate but if you stop and floor it and try to accelerate it makes a noise like its starving for gas or fuel and when it gets to about 3000 rpm just before 3rd gear you have to let off the gas and it will like miss or shudder and then it will accelerate some more and shift. but if you do not let off the gas it will hang there in second gear and wail and not shift up unless you let off the gas , any body got any ideas on what it could be ... she has 175,000 on body about 75,000 on motor and trans they were new from chrysler ...thank for any help you can offer ohh one more thing yesterday it posted five codes they were ,random cylinder missfire,and missfire on cylinder 2,3,4,and 7

 

I have 2 guesses for ya. The easy one is Motorvac. My 95 and 01 both did something similar and I have fixed several others doing this. The Magnum motors, including the V10, are the best responders to Motorvac I have ever seen. Make sure to insist on that brand, Snap-On sells the machine, I believe its made by Sun. No other brand seems to do the job. The next would be the concern about the heads being cracked. Sure youve heard about this. But the Motorvac is easy and cheap compared, and I have a 100% success rate so far.

 

RAMACK, what procedure of MotorVac are you talking about? MotorVac is a brand and they have machines that do all sorts of things.


Travis

 

How did your plenum look? Did you actually pull the throttle body, and take a peak at the back of the manifold? (that's where the oil likes to pool) Having any oil consumption issues? When's the last time you had a tuneup? (cap, rotor, plugs, wires)

Not shifting at WOT is another issue entirely, and is a product of the governor pressure sensor in the trans. The original factory units tend to get saturated at WOT, and stop working correctly.... so, the trans doesn't shift until you let off the gas. That can be fixed by upgrading to the heavy duty Borg Warner pressure sensor and solenoid. They can be had from Ebay for less than 100 bucks.

 

Yeah, I geuss I use the term Motorvac like I do Band Aid or Kleenex, its a brand nake but has taken over the field. The only processes I know of that Motorvac machines have is the throttle body cleaning, fuel volume, and the injection cleaning. So I meant the injection cleaning. I have fixed multiple running issues with this process, from misfires to pinging, to trans shift issues. And dont blame the trans too quick, I had a Caravan in last week that had tranny problems, ended up being a plugged catalytic converter. Engine couldnt build RPM.

 

ok heyyou i inspected the plenum with a dentist mirror and a flaslight like is stated in the sticky on plenums ,I saw no oil or residue or anything i did not give it the magnet test but went out and got one and will try that tonight the tune up is recent as well as cleaning the engine with cleaner and i just went over about every vacuum line and found one broken one . i want to try to remove the front o2 sensor and drive it but wonder do you have to worry about any flames shooting out the hole ,I am willing to try it but do not want to blow myself up in the process if possible ... if i do the o2 thing and it runs better then it is definetly the plenum ? and maybe the cat as well ? someone stated a concern over the govenor which is a valid one because about six months ago i was getting a code for the tranny temp but i took it to a trans shop and they said she just needed a tune up which i did and the code went away ,just a few days ago did tune up again but there was no tranny temp code this time .how do you know its the govenor for sure i mean if its valid i have no problem changing it out but i do not want to just throw parts at the truck if i dont have to ...thanks

 

Shouldn't have to worry about setting yourself on fire... If it runs better, that means the cat is clogging. Try it with just the O2 unplugged first, (but still in the pipe) If that doesn't make any difference (aside from a check engine lite...) pull it out, and try it again.

 

okay i have checked the plenum it is steel of course with my luck but it is clean as a whistle no oil at all in there ,checked the tps getting .6 volts at idle and 4.0 at WOT, guy at dodge said that was acceptable i do not know , checked the coil 12 ohms accross the terminals isnt it supposed to be 9 or less ? checked the spark plugs,cap ,rotor all like the day i put em in no carbon or anything on them ,have noticed the oil went down a little but its not going out the pipe and i do not see a leak anywhere either ,although it is running a lil rich but no off color smoke of any kind just smells a little gassy ,changed the purge and selenoid last year so it isn't that but i checked again to be sure ,i did notice that when i took it for a spin tonight it did the same hesitate shift between 2nd and 3rd but it also picked up a new one .when i kept the pedal down to long instead of letting up a bit to get it to change gears , i noticed a slight like bucking or surging going on, just before it shifted , any body got any ideas also does any body know how to get rid of the ad thing on the left i cant read all the posts i am getting

 

I use firefox, with adblock pro. I don't see any ads at all.

Have you checked your fuel pressure?? Compression test??

 

ok guys i have checked everything on the truck so i thought what the heck it could not hurt to pull the o2 sensor when i did and drove it ,it sounded like headers with whistles taped to the ends but it got to 50 in the length of a city blockand shifted easily so i am guessing it is just the coverter the o2 is clean looks brand new and i can not seem to find the plug for it so i guess it will be staying in they must of hid it up over top of the tranny because i cannot find it ,i have a choice of a walker or a magnaflow cat to replace it any ideas ? the truck has 175000 on the original cat so i guess i was lucky .anybody ever put on a bolt on cat versus a universal .... my biggest obstacle is no place to get the truck off the ground high enough for me to get under it ,,,so i guess i will be taking to a garage but spent two days trying to find one and one line of bs or another i am no further today than i was a week ago .....