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MrsLouisianaHogDog
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« on: November 19, 2014, 01:18:59 pm » |
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To the mechanics out there...
My truck is doing something wierd. Don't know if it may be a sensor outta whack or not.
She cranks right up. I can be sitting still idling in park, or in gear, going slow or fast (up to 75mph)....the RPM's will jump, randomly as if I'm revving the gas. Anyone have any ideas off the bat as to what might be causing that?
Only thing that's changed recently is the old arse weather!
Thanks in advance.
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~Krystale of the Southern Comfort Combine~ www.southerncomfortcombine.webs.com*Proud member of the Mississippi Hunting Dog Association* ADBA Safe Dog Program Evaluator and Trainer |
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Judge peel
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« Reply #1 on: November 19, 2014, 02:16:48 pm » |
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Mine did that same thing two yrs ago was the fuel mod mine is diesel
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charles
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« Reply #2 on: November 19, 2014, 02:31:24 pm » |
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Mine did that same thing two yrs ago was the fuel mod mine is diesel
Ford, chevy or dodge? My dads 01 cummins is doing something similar. It wont run good till the engine warms up and it will start acting somewhat better. While its acting up, i can press the fuel pedel all the way down and it wont do crap. Even after it warms up, i can be going 30, 40, 55 n so forth and ease into the fuel and can be all the way to the floor before it starts to accelerate. If i stop on the fuel, it does what its suppose to do (once its warmed up). He put a new set batteries on it a yr ago and the tck drove like it was suppose to, but bout 4 months later, it started acting up. It has a cable linkage for the throttle, not a tps (throttle position sensor). Any ideas on my dads tck too? |
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Why should I trade one tyrant three thousand miles away for three thousand tyrants one mile away? An elected legislature can trample a man's rights as easily as a king can!
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Judge peel
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« Reply #3 on: November 19, 2014, 02:44:37 pm » |
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Had the same thing on two different trucks one was injectors if they never been changed and has 350 grand on them probly that the other was a harness issue but did the exact same the only difference the harness problem would stall out if you mashed more than 1/2 way down hope that helps
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Judge peel
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« Reply #4 on: November 19, 2014, 02:45:27 pm » |
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Bad injectors tend to run bad till they are good and hot
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MrsLouisianaHogDog
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« Reply #5 on: November 19, 2014, 02:56:42 pm » |
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It's a 2001 Dodge Ram 1500, 5.9 V8. I had alllll kinds of troubles not too long ago with this thing and she's actually finally been running well until now. I just got home from the store and when I pulled into the yard and put her in park, she died. Cranked right back up though. So weird.....
Sent from my iPad at the Southern Comfort Combine
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~Krystale of the Southern Comfort Combine~ www.southerncomfortcombine.webs.com*Proud member of the Mississippi Hunting Dog Association* ADBA Safe Dog Program Evaluator and Trainer |
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Judge peel
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« Reply #6 on: November 19, 2014, 03:01:31 pm » |
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Check your fuel filters I know those yr dodge known for bad coil packs and voltage regulators can cause to shut of when idle but will start and run
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charles
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« Reply #7 on: November 19, 2014, 04:43:18 pm » |
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Naw, its got bout 170,000 but why would it run right with new batts for 4 months then go back to crappy running. Its got a vp44 pump, so its not a full electronic, but not full mechanical either. I wounder if it could b sensor on the inj pump not reading correct
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Why should I trade one tyrant three thousand miles away for three thousand tyrants one mile away? An elected legislature can trample a man's rights as easily as a king can!
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Judge peel
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« Reply #8 on: November 19, 2014, 05:13:11 pm » |
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Could be I don't know how many relays to the mod to the computer for fuel compinsation but if batteries made a differents I would put money on fuel mod or harness I ain't a mechanic just stuff I been thru I work out of my trucks so I can't have them down long lol
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charles
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« Reply #9 on: November 19, 2014, 05:56:26 pm » |
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I was thinking some sort of brain for the fuel flow once I say it didn't have a tps.
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Why should I trade one tyrant three thousand miles away for three thousand tyrants one mile away? An elected legislature can trample a man's rights as easily as a king can!
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Shotgun wg
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« Reply #10 on: November 19, 2014, 07:08:32 pm » |
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To me it sounds like a throttle position sensor. That can cause eradic idle. Only question I have is when u are running at speed and it revs does the truck respond? Go faster till it idles back.
Shotgun
Arkansas
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Shotgun
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Shotgun wg
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« Reply #11 on: November 19, 2014, 07:11:40 pm » |
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Charles urs could be injector pump problems. Slow or no response is a fuel issue. I'm guessing y'all have changed the fuel filter.
Shotgun
Arkansas
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Shotgun
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MrsLouisianaHogDog
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« Reply #12 on: November 19, 2014, 07:20:41 pm » |
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To me it sounds like a throttle position sensor. That can cause eradic idle. Only question I have is when u are running at speed and it revs does the truck respond? Go faster till it idles back.
Shotgun
Arkansas
No, it seems to just stay the same speed just the rpms jump and the engine revvs... |
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~Krystale of the Southern Comfort Combine~ www.southerncomfortcombine.webs.com*Proud member of the Mississippi Hunting Dog Association* ADBA Safe Dog Program Evaluator and Trainer |
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charles
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« Reply #13 on: November 19, 2014, 07:23:44 pm » |
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Charles urs could be injector pump problems. Slow or no response is a fuel issue. I'm guessing y'all have changed the fuel filter.
Shotgun
Arkansas
Air,Mobil and file filters were changed before putting the new batteries in it. When the new batteries went in and ran fine then messed up again, is when I had the alt checked, and hung tested a new 1 and nothing changed. Which ruled out over/under voltage. All grounds are there, and even some new 1s I added. Now that judge mentioned the ecm, i will check all connections and run a new direct ground and try that. If that doesn't work, then I'll recomend him get a new ecm or vp pump. Now he does have 25hp tuner on it, which may have something to do with it. I just thought of that. I'll check the connections and pull the tuner out and see if that fixes it. |
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Why should I trade one tyrant three thousand miles away for three thousand tyrants one mile away? An elected legislature can trample a man's rights as easily as a king can!
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charles
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« Reply #14 on: November 19, 2014, 07:26:20 pm » |
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To me it sounds like a throttle position sensor. That can cause eradic idle. Only question I have is when u are running at speed and it revs does the truck respond? Go faster till it idles back.
Shotgun
Arkansas
No, it seems to just stay the same speed just the rpms jump and the engine revvs... Now that yaw brought that up, and you saying the rpm's increase, but no speed changes. That's another thing my dad's 01 is doing. But that only when it's cold, and settles down after the engine warms up. Mrs. Dianna, does your truck do the same thing, act odd and somewhat fix its self after it warms up? |
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Why should I trade one tyrant three thousand miles away for three thousand tyrants one mile away? An elected legislature can trample a man's rights as easily as a king can!
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Pwilson_10
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« Reply #15 on: November 20, 2014, 06:02:21 am » |
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Charles mine did that and it was the TPS my rpm would jump all over the place and it would run rough in the morning then the rest of the day run crazy good but my smarty is what messed it up u can get one that is suppose to be chip friendly but I would check that
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Jmesonp1
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« Reply #16 on: November 20, 2014, 10:45:14 am » |
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Is the vehicle a standard transmission? if so it will rev when clutch slips.
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Shotgun wg
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« Reply #17 on: November 20, 2014, 12:18:42 pm » |
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Clutch slipping in an auto can cause rev issue. Normally doesn't cause engine stall when u stop. Could be torque converter problem. Torque converter can slip and also at idle try to hang causing stall. Trans clutches normally don't cause stall unless they get so hot they weld themselves together. One way I have checked my trans before was to crank let warm up put in drive and nail it. See if u have excess rev between gears or while under power. If u do stop put in reverse and nail it. If no excess rev chances are it's trans. If it over revs chances are it's torque converter. Be sure to check fluid prior to doing this. Low fluid can also cause trans clutch slip.
Shotgun
Arkansas
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Shotgun
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MrsLouisianaHogDog
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« Reply #18 on: November 20, 2014, 12:49:20 pm » |
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Mine is an automatic. Ill be driving her this afternoon and the weather is a bit warmer today so ill see how she acts.
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~Krystale of the Southern Comfort Combine~ www.southerncomfortcombine.webs.com*Proud member of the Mississippi Hunting Dog Association* ADBA Safe Dog Program Evaluator and Trainer |
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Nathan83
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« Reply #19 on: November 24, 2014, 08:48:51 am » |
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Sounds to me on the diesel is a fuel problem, drain your fuel filter see what comes out sounds like water. Is their any smoke coming out of the exhaust white or gray or blue also could be sucking air around the injector lines they are bad about that. To figure that out start the truck take starting fluid and spray around the lines just the lines if you hear the truck change tones then thats it.
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