94 Dodge Ram 318 Fuel Injection Questions
From : markinnc
Q: hi i am working on an intermittant problem on my 94 dodge ram. it has the 318 motor. it will intermittantly stop running like it is starved for fuel. this is preceeded by a couple of minutes of barely running while not under load spitting and sputtering through the throttle body. the problem most ofter happens following a normal drive of 15-45 minutes. this sounds more like a possible computer problem. i did some of the easy stuff first and replaced the rotor dist. cap coil and plug wires. what about the plugs did you pull and inspect them as well if you have a timing light i would check the timing at idle when the engine is running normally and then bring it with you the next time you go out. when the engine acts up again reconnect it and see what it is doing. if it is stillnormal the problem is fuel related still could be the computer and if not this will give you an indication if the problem is ignition related sensor or still the computer. it sounds like it is starved for fuel or that the computer has gone south and messed up the fuel injection or ingition. but am thinking fuel at this point. does anyone know which relay location turns on and off the fuel pump does anyone know if there is a fuel sensor in the fuel line and if there is where it is does anyone know if the computer is involved with turning the pump on and off i dont remember which relay there is no fuel sensor in the line and yes the computer controls the pump. if it were a fuel starvation problem the problem should be fairly consistent and not take 40 to 45 minutes to occur and then go away again in a few minutes. the computer otoh could have a heat related problem that takes time to build up. are you getting a check engine light you might want to have the computer checked for potential codes as these indicate potential and initial problems that have not yet lit the check engine light. any ideas before i start looking at fuel pump/filter expensive for this model and difficult to replace you can use the timing light test to see if your ignition is acting up. as for the pump it is in the tank and the filter and regulator are part of it. the price is between $150 and $450 depending on who makes it and where you get it and if it is still the origional pump it is getting up there in age but then again my nissan is 17 years old and still has its origional pump. i would find somebody with a fuel pressure guage and both pressure and flow test the pump before swapping it out and do it with a fairly low tank of fuel to rule out cracks in the intake tube sucking air which could be another cause of your problems as remote as that may be. -- if at first you dont succeed youre not cut out for skydiving .
Replies:
From : ace
rscamaro wrote on fri 06 jan 2006 215832 -0500 the nolalu barn owl wrote on fri 6 jan 2006 132146 -0600 simms bike werks jon@simmsbikewerks.com wrote very easy to use unlike our competitors your windows do not have to be clean and dry to apply. simply put 1oz of the super concentrated rain repel in the windshield washer reservoir and fill with your favorite windshield wash that it! water just beads up and blows off as you drive. repels rain sleet and snow safe for use on glass plastic plexiglass and lexon http//www.s =snipped url cant see through the beads of water. thats why i use wipers. there is a sucker born every minute. although it very well may be that a sucker is born every minute i say the rain-x is a great chemical to use. much easier to see under downpour conditions less wear on the wipers and visibility is greatly increased in rain and snow conditions. oh yea and you can buy it in gallon jugs of premixed solution to put directly into your washer reservoir. the downside is at night in inclement weather under street lamps. when the light beam is 90 to the windshield you may experience a glare caused by the single beads of water/snow. ...ron -- 68rs camaro 88formula 00gt mustang personally i just keep my wipers in excellent condition no beads no droplets just clear windshield. oh and no silicone smears if i do use my wipers. vbg budd ive used rain-x for years and i think the stuff is great. put it on when the temps are above approx 60 degrees walk away from it for at least a couple of hours and then wipe it off with a micro fibre towel. i dont notice the glare the other poster is talking about and its much easier to see thru when its raining. denny yup agree wabbit! rain-x is the best thing since heated leather seats! mike .
From : tbone
edtheward wrote @localhost.talkaboutautos.com katiefields92@yahoo.com says... mil light came on motor went crazy but still was functioning. speedometer read no bus . help no warranty. uh oh!!! so why no warranty he stole it if he bought it summer of 2004 he might have over the 36000 mile warranty but still under the 70000 powertrain. even at that theres still the emissions warranty which will cover it. at least here in az a vehicle wont pass smog tests if the engine light is on with any problem relating to emissions. .
From : tbone
very easy to use unlike our competitors your windows do not have to be clean and dry to apply. simply put 1oz of the super concentrated rain repel in the windshield washer reservoir and fill with your favorite windshield wash that it! water just beads up and blows off as you drive. repels rain sleet and snow safe for use on glass plastic plexiglass and lexon http//www.simmsbikewerks.com/product.phpproductid=16659&cat=428&page=1 .
From : tbone
thanks. i dont know much about trailer hitches but the information sticker for the truck claims it has a class iv hitch. its a 2x2 receiver though. .
From : max dodge
on thu 5 jan 2006 184922 -0500 dugger4 dugger4@cox.net wrote hello i spend most my time here reading and learning. tonight i need a little advice. i am trying to remove the rear tail light drivers side- if there is a difference from my truck to replace the turn signal bulb. the owners manual states that i should push the red clip and pull the wiring connector from the lens....not on my truck. is there a better manual or web site that i could go to for more information thanks in advance marshall from my 2003 1500 factory service manual. best $90 accessory i could find. turn lamp removal 1 disconnect and isolate the negative battery cable. 2 remove the tail lamp unit refer to 8 - electrical/ lamps/lighting - exterior/tail lamp unit - removal. 3 remove the bulb back plate from the tail lamp unit. 4 separate the bulb from the lamp bar. installation 1 install the bulb into the back plate. 2 install the bulb back plate to the tail lamp unit. 3 install the tail lamp unit refer to 8 - electrical/ lamps/lighting - exterior/tail lamp unit - installation. 4 connect the negative battery cable. tail lamp unit removal 1 lower the tail gate. 2 remove the screws 3 disengage the taillamp unit from the body panel. 4 disconnect the electrical connector fig. 19. installation 1 connect the wiring harness connector. 2 position the taillamp unit into the body panel. 3 install the screws fig. 19. happy camping. ldpoos@nopants.juno.com remove nopants to reply by direct e-mail; 2003 dodge 1500 qc sb hemi a/t tow package 3.92 gears 11 mpg towing 2001 aerolite 21rdb 21ft tt scales 2900 dry .
From : markinnc
if this is the case i could disconnet the fuel line at the rail turn the key on and i should have gas right oh and this might be a bad idea to try this as you are dealing with a high pressure pump and it could make a real mess that could be a real fire hazard. the pump will also only run for a few seconds without the engine running. you should use the proper tools here. -- if at first you dont succeed youre not cut out for skydiving .
From : max dodge
hello i spend most my time here reading and learning. tonight i need a little advice. i am trying to remove the rear tail light drivers side- if there is a difference from my truck to replace the turn signal bulb. the owners manual states that i should push the red clip and pull the wiring connector from the lens....not on my truck. is there a better manual or web site that i could go to for more information thanks in advance marshall .
From : tbone
oh and this might be a bad idea to try this as you are dealing with a high pressure pump and it could make a real mess that could be a real fire hazard. the pump will also only run for a few seconds without the engine running. you should use the proper tools here. actually its a bad idea because most fuel rails have a test port no need to disconnect anything. and yes a proper guage would be best but simply tapping the pin in the valve should allow fuel to spurt out. cover the valve with a rag and take appropriate precautions. most is not all and if you damage the test port taping a pin in it then you really are sol and you will still have fuel spraying at high pressure into the engine compartment not a good idea. my 97 manual says that some of the fuel rails have a test port not all of them. the appropriate precautions are to use the correct tools and use them correctly. as to the filter and regulator by 2000 the pair with in a seperate housing on top of the pump. both are removable as a unit and can be done without pulling the pump out of the tank. i dont think so. how would you disconnect it from the fuel pump. come to think of it how exactly would the fuel pump be mounted if not to the upper flange. again in 97 they started doing this as the manual also says some of them have a removable fuel filter / regulator assembly but you still had to remove the entire assemply from the tank to get to it. not sure how far back this goes but op should check to be sure as it might cut cost and time for repairs. on a 94 it would increase time as the pump still has to be removed and now disassembled. with a pump that old and the amount and difficulty of work involved if he is going to remove it he should just replace the entire assembly anyway. i would also check to be sure any pump op gets has this unit as $200 almost sounds too low to be a full assembly. i dont think that the pump for the 94 comes any other way although it might be comming without the fuel guage sensor. mine was complete and for less than that but i know somebody who works at a major parts distributor and gets a significant discount. last buy the factory service manual its irreplaceable for good info. good advice here but dodge is not known for keeping manuals for a vehicle this old. -- if at first you dont succeed youre not cut out for skydiving .
From : tbone
oh and this might be a bad idea to try this as you are dealing with a high pressure pump and it could make a real mess that could be a real fire hazard. the pump will also only run for a few seconds without the engine running. you should use the proper tools here. actually its a bad idea because most fuel rails have a test port no need to disconnect anything. and yes a proper guage would be best but simply tapping the pin in the valve should allow fuel to spurt out. cover the valve with a rag and take appropriate precautions. as to the filter and regulator by 2000 the pair with in a seperate housing on top of the pump. both are removable as a unit and can be done without pulling the pump out of the tank. not sure how far back this goes but op should check to be sure as it might cut cost and time for repairs. i would also check to be sure any pump op gets has this unit as $200 almost sounds too low to be a full assembly. last buy the factory service manual its irreplaceable for good info. -- max there are four boxes to be used in defense of liberty soap ballot jury and ammo. please use in that order. -ed howdershelt author .
From : tbone
tbone ok several good suggestions. i do have a timing light and that would certainly tell me if the ignition timing is going south. yes i price a napa pump filter assy and it was 200. i also had another suggestion earlier on this board about how to replace it which sounds better than dropping the tank. i was told to raise the bed and i could get at the pump/filter assy. i did not know there was a regulater in the pkg also. you can raise the bed but i really dont know which is more difficult. if the tank were near empty i would think that dropping the tank would be easier and far less dangerous as the bed is always heavy. the fuel system in your truck only has one line and no return path so it has a regulator and it is in the tank with the pump and filter. the computer controls the pump and there is no pressure switch how does the computer control the pump or does it just have the pump on all the time and the regulator provides the right amount of gas if this is the case i could disconnet the fuel line at the rail turn the key on and i should have gas right the pump uses its regulator to control and maintain pressure. the computer turns the pump on when the ignition is switched on for a few seconds to build up pressure and turns it back on full time when it senses the engine is running. i would suspect it is done this way to prevent the pump from killing the battery when the ignition is left on and the engine is not running as some do to listen to the radio or run things that do not work in accessory mode. will the computer save error codes i had it at a shop following the second failure after replacing the failed parts. they said there were no error codes. they actually put a 100 miles on the truck without it failing so they were not able to see the failure. the truck had died on the side of the road and i had them tow it in. anyway could the computer have zered the error codes if any when things started working again i dont think so. it can turn off the check engine light after a while but i think that it still retains the codes at least for a while. if the battery were to be disconnected they would be cleared. either way unless the battery were to be disconnected or they were reset with a code reader they should still be there for a while if they existed at all. thanks your welcome. -- if at first you dont succeed youre not cut out for skydiving .
From : pete s u17380 uwe
11rv7sj7mg9n209@corp.super.com... yup agree wabbit! rain-x is the best thing since heated leather seats! mike i think the value of rain-x comes right to the front when you pull out into the rooster tail of a semi to pass it on the interstate...... .......the forward vision while riding in the rooster tail is almost not to be believed. since i travel the interstate frequently that reason alone is sufficient for me to use rain-x on a regular basis. .
From : max dodge
from the lens....not on my truck. is there a better manual or web site that i could go to for more information thanks in advance download the full 2003 factory service manual here http//www.hemitruckclub.com look on the left side of the page .