dien dodge question...

[BIG CHRIS]

95 dodge ram 1500 4x4 with a 5.9 automatic... the truck cranks and idles fine in gear and park. When youdrive it it will die. Looses all power like a coil wire fell off. Sometimes it will got a mile or cpl or sometimes a few fet. Seems to be getting worse everytime though. If you have good speed you can put the truck in nuetral and turn the key off and wait a cpl secounds and it fire right back I  up. Or do the same from park. But if it dies and you just put it nuetral and try to crank it all it will do is turn over. You have to turn the key off and then try. Any ideas? I'm a poor country boy that depends on getting things done in the yard any ideas would be very appreciated it. I know it could be the pcm, on down to any number of sensors. Most common would be the crank case start sensor. Just looking for some opinions before I tear into it. Just replaced the fuel pump a cpl months ago. It doesn't sputter and spit it just dies.

[SnF bucking bulls]

Injection pump??

[Purebreedcolt]

Idk if this is it but a guy I work with had same problem was a loose hose clamp right befor the motor on fuel line good luck

[SnF bucking bulls]

Idk if this is it but a guy I work with had same problem was a loose hose clamp right befor the motor on fuel line good luck

Yeah sounds like something fuel related

[justincorbell]

Djhogdogger had 1 that quit on them one day and it ended up sitting for over 2 years i believe.....long story short the catalytic converter was plugged and an o2 sensor was keeping the engine from starting or something along those lines.....may be something to check

[charles]

 Justin, that sounds like it could be issue. I didn't even think of the cat or O2, but shouldn't it throw a code if it was the o2? it also could be starving for fuel from a loose piece of trash that blocks the fuel line every so often or blocks the inlet in the tank till there is no more demand for fuel

[justincorbell]

Charles i'd be lyin if i gave an answer, not very familiar with those trucks. I know Mr. James said all he did was unplugged the o2 sensor and the truck fired up immediately after sitting a LONG time but when he would plug the sensor back in it would die and not start.......i believe he rodded out the cat and got her running good again.....hopefully him or Mrs. Dinah will see this and add info.

[halfbreed]

    well when the ol john deer went down I had the fuel pump rebuilt and after I put it back on it would do something similar . it was a clogged return line for the fuel . do these new fangled deisle trucks have return lines on them  . some of the spider gear off of the pump had passed into the lines and after I cleaned it out all was well .

[charles]

    well when the ol john deer went down I had the fuel pump rebuilt and after I put it back on it would do something similar . it was a clogged return line for the fuel . do these new fangled deisle trucks have return lines on them  . some of the spider gear off of the pump had passed into the lines and after I cleaned it out all was well .

yes these new fangled diesels hav return lines, but he has a 1500 aka: 1/2tn with the 5.6L 360cid gas burner.

Justin, the O2 sensor was insence shorted out on mrs Diana's tck, it was telling the onboard computer it had to much fuel and to shut the fuel supply off, or to much O2 and it flooded the eng out. a clogged cat will cause a similar issue by not blowing out what the eng sucked in. its kinda like some folkls with cabbage or beans, we intake the fuel, but and blow out the tail pipe, but if we were clogged up, we wouldn't b able to take in much more fuel until the we got unclogged. thank goodness for exlax 

[halfbreed]

  oh ok lol  I saw that dien and thought that was abbreviated for diesel or something  lol  don't these fuel injected things have return lines  ?   lol    this is why I still drive my 68 f-100 6 banger   lol

[charles]

 they do hav a return line, but most of the fuel is kept in the injection system to keep pressure and recirculate back to the injectors and when the eng is turned off, some of the unsed pressured fuel is returned back to the tank but it is minimal compared to the old diesels, but I am refreing to both gas n diesel eng bout keeping fuel under pressure, with limited fuel returned back to the tank

[CentralTex 254]

If it cranks fine and will run and die at different times it seems to me your truck might be going into limp in mode. It does this if an issue comes up that can hurt the engine or drivetrain. I have seen a few things that can cause thus big the most common two are bad correlation problem from throttle petal sensor  and throttle position sensor if that year had fly by wire (electronic throttle pedal sensor) and not cable style throttle.

The next most common I'd your o2 sensors and or cats. If the 02 sensors make your engine run to lean or too rich it can and will throw the truck into limp mode so you won't destroy the cats.

First thing first put a scanner on it to narrow the problem down.


Auto and heavy equipment mech

[Shotgun wg]

If it cranks fine and will run and die at different times it seems to me your truck might be going into limp in mode. It does this if an issue comes up that can hurt the engine or drivetrain. I have seen a few things that can cause thus big the most common two are bad correlation problem from throttle petal sensor  and throttle position sensor if that year had fly by wire (electronic throttle pedal sensor) and not cable style throttle.

The next most common I'd your o2 sensors and or cats. If the 02 sensors make your engine run to lean or too rich it can and will throw the truck into limp mode so you won't destroy the cats.

First thing first put a scanner on it to narrow the problem down.


Auto and heavy equipment mech

U are talking derateing the engine aren't u. The way he is saying it just dies. Cycling the power is resetting something either in the ECM or a relay. Resetting and clearing codes could be O2 sensor. Does anyone know if these sensors use constant open or closed circuit or do they use a ohm setting. If an open/closed circuit unplugging or placing a jumper from one side of plug to other could show if its the sensor. If ohm or another type this will not work. I do agree throttle sensors could cause issues like this. I would suggest a pressure test of fuel system as well. A new pump doesn't always mean proper pressure and low pressure can cause it to cough and die but u said its like u turn the key off which sounds more like electrical of some kind including sensor issues.

[BIG CHRIS]

It doesn't hiccup chug or spit. It just dies! Like it looses all its fire. The check engine light is on. It has a date with the shop and see what the codes say on it. I appreciate the thoughts and ideas. I've had some o2 sensors and cats go bad on me before and they would cut out and loose power and run like crap. The truck idles and runs great before it dies. When it dies it goes all at once

[Hogsnatchers]

Check the relays. Not sure which ones it would have for the ignition or throttle body but sounds like one may be giving you fits

Sent from my DROID RAZR HD using Tapatalk 2

[CentralTex 254]

Well if its just dying than its not going into limp In mode. Yea I shoulda read that a little better lol.

[muleskinner]

My 99 dodge diesel would idle or run in neutral but not in gear and I hade to get an injection pump. Mechanic told me they are going out around 100,000 miles.

[BIG CHRIS]

Not a diesel. But its got 398,000 on it.

[catahoula_cur]

    well when the ol john deer went down I had the fuel pump rebuilt and after I put it back on it would do something similar . it was a clogged return line for the fuel . do these new fangled deisle trucks have return lines on them  . some of the spider gear off of the pump had passed into the lines and after I cleaned it out all was well .

yes these new fangled diesels hav return lines, but he has a 1500 aka: 1/2tn with the 5.6L 360cid gas burner.

Justin, the O2 sensor was insence shorted out on mrs Diana's tck, it was telling the onboard computer it had to much fuel and to shut the fuel supply off, or to much O2 and it flooded the eng out. a clogged cat will cause a similar issue by not blowing out what the eng sucked in. its kinda like some folkls with cabbage or beans, we intake the fuel, but and blow out the tail pipe, but if we were clogged up, we wouldn't b able to take in much more fuel until the we got unclogged. thank goodness for exlax 

 Justin, you are kinda right on what happen to our (djhogdogger) truck. The truck we have is 94 dodge 1500 with 5.9 gas engine. It was doing the same thing that Big Chris truck is doing. Then one day it just stopped running. I spent a few bill's on changing out sensor's and come to find out it was the Cat Converter. It was plugged up. So I rodded it out for now. There wasn't anything wrong with the O2 sensor. You can check the code's but its a pain because you have to count how many times the mileage flashes (There is no plug to plug a scanner into on this model). I did this and come to find out, it wan't any of the code's that was coming up.

 Big Chris, Do this only when the truck Will Not Start After it has been running. This is how I was told to check the the Cat Converter. (1st) Take the O2 sensor infront of the Cat Coverter out (O2 sensor between the engine and Cat) and let it hang there.
(2nd) Then start the truck up and run it down the road a little way's and see how it run's. It will be a little loud with the O2 sensor out.
  If it doesn't die on you, most likely the Cat is plugged. If it die's on you, it has to be a sensor going out on the truck. Thats when you will have to count the flashes on you mileage.

  Good Luck

[BIG CHRIS]

I appreciate it catahoula_cur. I'm not at the house right now. Or it would be on like donkey kong jack! I'm running super 40 series flow masters under so a little more noise won't bother me none! When I put the exhaust under I had new cat and o2 sensor done to. I had it done 2 years ago. So it just might be my problem...