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Quiet Lunatic 05-11-2013 10:27 PM

Help please
 
2006 ram 1500 4.7
:4-dontknow::4-dontknow:
i have never experienced anything like this......i can be accelerating normally, truck shifts normally until about 50mph. once i hit 50mph, it's like it just gives out. it literally feels like it has run out of power to continue accelerating. any tips or advice?? also, what's the best thing to clean some really tough carbon deposits out of my valves??
many many thanks in advance

SuperiorStyles 05-11-2013 11:39 PM

First go check the Fuel pressure and Check the Air filter to make sure you have proper Pressure and the Filter for any restriction.
then come let us know what is the results.
once we know then we will go to the next steps
-Run some chevron or Mobil 93 octane with a chevron fuel cleaner.
-Check Compression

Quiet Lunatic 05-13-2013 12:46 AM

K&N filter, been running 93 octAne and have been doing the carbon induction cleaner from the dodge dealer. Fuel injectors are reading normal, number 6 cylinder 10lbs less on compression test than other cylinders :( :(

Chris65 05-13-2013 08:12 AM

Got nothing to do with fuel pressure.
Check error memory with running engine after driving. Do not cut the engine off before, do not let AutoZone check the memory.
If there is nothing stored, check the psrameter.
Just a stupid question-is the tire pressure correct in all tires?
If not, the system notice a "spare" wheel and limits speed.
Please check before u take everything apart...

Quiet Lunatic 05-13-2013 12:21 PM

35lbs in each tire. I went to AAMCO and they put it on a big computer diagnostics and found cylinder 6 misfire and also a compression test. Thought it might be a tranny problem since the acceleration "levels out" at like 50mph unless I stomp the gas to the floor

xclimation 05-13-2013 09:40 PM

Quote:

Originally Posted by Bryant Manning (Post 1096886)
35lbs in each tire. I went to AAMCO and they put it on a big computer diagnostics and found cylinder 6 misfire and also a compression test. Thought it might be a tranny problem since the acceleration "levels out" at like 50mph unless I stomp the gas to the floor

Turn around!!! Based on experience and friends' experience; AAMCO will find a problem that isn't there. And a 1k plus solution to fix a problem that isn't there! I'd go with the stealership before AAMCO!

Chris65 05-14-2013 07:14 AM

I agree.
Important are the errorcodes. There you can read the "landscape" of your engine. Cyl. Missfire is a start.
Can be almost everything. 20 cheap repair tries are more expensive than ine correct repair.

tjbiker031 05-14-2013 08:39 AM

Yeah run away from aamco! they couldnt diagnose a leaky radiator cap telling my buddy he needed a hole bunch of crap after having it for a week. He took it to me and i found it in 20 minutes...

Yeah take it to a good shop that specializes in diagnostics or to the dealer. To me, this sounds like a issue that the average DIY'er cant diagnose without a few expensive tools

RogerRamJet 05-15-2013 01:26 AM

Have you changed your fuel filter lately?

Chris65 05-15-2013 08:12 AM

You also wrote that u have soot on the valves. Means your gas mix is too rich.
Or/and u have a bad combustion.
This is what u have to look for.
Leave the fingers from cleaning additives. They destroy more than they help.
Check also the egr valve. Look for the error code.
Also check the valve for function. High soot can make it stick.
Then its possible that u have lack of power.
Your description can go in this direction.
If the valve sticks, get it out and clean it good with brake disk cleaner.
No matter what it is at the end-I might be wrong-can also be the map sensor-don't drive the vehicle in short distances. This is what kills the engine.
Check: map, maf, air intake temp sensor, crank sensor, vacuum system, intake system for keakage and read the parameters of the o2 sensors. Also the egr and how already mentioned the fuelfilter.
I believe the issue is in this direction.


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