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Pickups Dodge Ram Dodge Ram Gasoline Engine Questions
159 messages, Last post on Nov 09, 2009 at 1:38 PM
You are in the Dodge Ram Forum. Your Host is kcram
| My Ram has 180,000 miles, I did a tune-up last week. When I drive between 25--40 mph,it starts to sound noise, like "Zee......." from the front as I give gas pedal. When the mph over 50, the sound gone. OR If I drive without AC, there is no problem at all. It had happened twice of the engine stop on the road. But I can restart the engine. Is my truck's engine getting old or weak? It cannot support the AC. Please advise. Thank you so much. | |
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Drove the truck home from work yesterday, all was good. Got in it to run an errand, engine ran erratically for 30 seconds and died. It would kick over and die as soon as the starter released. Next morning, would not even do that. Good spark at #1 and #8 spark plugs. Popped the cover off the injector rack bleeder/test port, opened the valve, no fuel comes out. Got volts at the connector to the fuel pump and good ground (on a multimeter). Easy to jump on the fuel pump being bad, BUT... I checked the relays (the old fashioned way: turn the ignition to "run", pull the relay out and push back in, feel it click in your fingers). The ASD relay makes and breaks fine (feel it and hear it engage/disengage). The fuel system relay does not. Take the fuel system relay and plug it in to the ASD relay slot, it worked. I put the relay from the ASD slot into the fuel system relay slot, did not work. Here is what I know: ASD Relay works. Good Spark to the plugs. Volts at the fuel pump connector. Fuel pump fuse is good. No fuel pressure at the injector rack bleed/test valve. The fuel system relay does not make with the key in the "run" position. Before I blow 250 on a fuel pump module and spend the day dropping the gas tank, I want to make sure the fuel system relay is working properly. I do not have schematics for the system. If anyone knows how the control voltage gets to the fuel system relay (even if the answer is the truck has to be running for it to come on) I would appreciate it. |
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I have a 03, 4.7, four door, ram. 9/04/09 at 125 /k miles radiator busted. Just six (6) months prior had system flushed out and refilled. When radiator busted it saturated the engine compartment. ( did not run engine hot). On 9/05 the next morning installed new radiator, put all fresh new anti freeze the recommended type. Started engine and ran smooth for about 2 hrs. Washed under hood to get excess splashed antifreeze (when radiator busted). Now runs rough on idle and going down the raod. any suggestions. Thanks Gus-truck |
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| Doing 70mph took foot off gas to coast into toll booth, herd a pop of some type and engin died. Made it to booth but wouldn't restart. Pushed to road side and tried to restart and wouldn't BUT 3 out of 5 times when i'd stop cranking the engin would turn backwards a revolution and blow out the throtlebody??? Have never seen this. Good spark, gas, cranks good, new battery, fresh oil...could the timing chain have gone that quietly?? Help would be greatly appreciated..thanks | |
| 03 Dodge 2WD 4.7 L. Check engine light is on, checked codes, Shows misfire any ideas. Thanks | |
| hi i have a 2002 ram 2500 5.9 gas,has 95000 and never any major issues BUT i have had a spark knock even on high test fuel,and fresh tune up?and when you r driving with a c on the heater door swaps to hot. what would cause that??when driving at 55-60 with heater off and selector to cold, heat will start coming out the vents, then stop and start again.last issue when started cold sometimes the engine will rev up on its own and like an older carb fed truck if you snap the gas real quick it comes out of it.please help.... | |
| I had a problem with my Dodge Ram 1500 5.2 liter, automatic misfiring on cool, wet mornings. There was no check engine light. I changed the plugs, wires, distributor cap, rotor and coil to no avail. I took it to a shop, left it for a week since this problem was most evident in the morning. I live in Houston so it wasn't especially cold when this happened. They couldn't identify the cause. Eventually, based on something the mechanic said and just on a hunch I tried heating the ECM with a hair dryer on a cold morning after starting the engine to confirm that it was still misfiring and shutting it down. After about 25 minutes of heating it I started the engine and it ran smoothly. In the warm afternoon when the engine was running fine, I removed the ECM and put it my freezer for about 30 minutes in a ziplock bag. When I reinstalled it and started the engine it misfired, confirming my diagnosis. The shop replaced the ECM and it's been running fine since. This is an odd problem that I haven't seen discussed on any forums so I thought I'd post this to help anyone else wrestling with similar symptoms. | |
| I have a dodge ram 1999 1500 v8 5.2 and changed the o2 sensor. it ran for about 3 days then started to have issues with the RPM's. I was driving along and suddenly IF I gave it gas it would not go any faster. I could not increase the RPM's but it would keep running If I gave it gas it would keep running nut only raise the speed slowly.. now I have to give it gas to start and it holds at about 6000 RPM. I cannot move the truck the engine dies. I can give it gas but it hesitances I do not get a back fire but the truck will not go faster than 30 MPH or 2000 RPM I hooked a tester to the computer and do see any error codes. before this I did have a error code p 0304 which is why I changed the o2 sensor. the truck has 60000 miles and has really not had any problems. any ideas? | |
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