[RamNation]

OK...new guy here in desperate need of answers!
Ram, 5.7 Hemi '07 model, died while driving yesterday on my way home. No noise, no lights on, no warning.Fuel pump runs and carb cleaner will not make it fire either. Narrowed it down to no fire. Replaced the crank.pos.sensor, no change. Where do I go from here??

 

[Redtruck-VA]

I always get into trouble when talking about the newer trucks. Do you have a ASD relay and fuse? How about cam sensor? You say the fuel pump runs, can you check rail pressure. Voltage at the coils? Should be active for the same duration as fuel pump when not running. What does it sound like while cranking? Is the valve train moving?

 

[RamNation]

Haven't went any deeper than the cp sensor at this point. It will kill the fire instantly so I started there. Replaced the cam sensor a couple months ago via trouble code, but it alone won't kill the fire. I assumed the fuel pressure was fine at the rails because the carb cleaner wouldn't make it fire either. I questioned the timing chain too, about to pull the valve cover to see if I have movement. All fuses are good, but there are no fuses or relays for the fuel system. I'm told its controlled by the TIPM, whatever that is.

 

[SUPER BEE]

Haven't went any deeper than the cp sensor at this point. It will kill the fire instantly so I started there. Replaced the cam sensor a couple months ago via trouble code, but it alone won't kill the fire. I assumed the fuel pressure was fine at the rails because the carb cleaner wouldn't make it fire either. I questioned the timing chain too, about to pull the valve cover to see if I have movement. All fuses are good, but there are no fuses or relays for the fuel system. I'm told its controlled by the TIPM, whatever that is.

Total Integrated Power Management, which controls EVERYTHING electrical on our trucks. An example, when you turn on your headlight switch, a signal is sent to the TIPM, then the TIPM turns on your lights. There is no direct connection.

 

[RamNation]

Any way to check the brain to see if its bad, other than to replace it? I assume the crankshaft pos sensor sends a reading to the comp and it in return sends fire to the coils. Are there any other links in between that could shut it down while driving?

 

[Redtruck-VA]

This is somewhat discouraging, but appears to be a real problem. We had a member with a truck that cut off and it turned out to be the timing chain. If I remember correctly the problem is only related to engines with VVT.
https://www.google.com/search?q=hem...&q=hemi+timing+chain+failure&revid=1109207860

 

[charged392]

Of you have scanner or a tuner with data view see if you can see rpm while cranking. If so comp sees crank sensor and knows rpm. Does the eng seem to crank a lot faster than normal?

If you have valve cover off deff see if you see movement. Another thing to try is make a custom nous light from a small 194 bulb (tag light) and hook it into an injector plug and see if it flashes.

 

[RamNation]

Timing chain it is boys...can't say I'm happy about it with only 81k miles on it. Next question...what are the chances the valves are all still good?

 

[charged392]

Won't really know until you change it then hand crank it over don't use the starter until you know for sure it spins 2 full revs

 

[Redtruck-VA]

The early trucks look to the 6.1 as the upgrade. I have a Crower going in next. Is there an upgrade for this fix?

 

[RamNation]

I appreciate the help guys. Joining this group has already paid its dues. I always Google my problems and this forum was on the list of answers. Apparently shade tree mechanicing should have had this years ago.
Now I guess the bank website is my next stop...looks like this may be expensive! Thx for the help. Still love my RAM!!

 

[Redtruck-VA]

Welcome to the forum..

 

[charged392]

We are here to help.

 

[kcd1369]

Sorry for your bad news. :sad:
But welcome anyway.:thumb:
You can almost always find the answers you seek here on HTC. At least if your seeking truck related answers. :lol:

 

[SUPER BEE]

:thumb: :WelcomeBanner1: :cowboy1_icon:

 

[DakotaJ]

Welcome aboard!!!

 

[Ghost03hemi]

Welcome to the Hemi Truck Club RamNation.:welcome-0005a:

 

[wilson762]

i have a 04 dodge ram 1500 4.7 sat for aprox 2 weeks went to start cranks over fast no start have pressure at fuel rail won't start with carb cleaner eather changed crank sensor no start changed cam sensor no start changed ecm no start all fueses and relays were good check wiring all looked good checked coils with noid light and no power was wondering if issue is with timing chain

 

[SUPER BEE]

i have a 04 dodge ram 1500 4.7 sat for aprox 2 weeks went to start cranks over fast no start have pressure at fuel rail won't start with carb cleaner eather changed crank sensor no start changed cam sensor no start changed ecm no start all fueses and relays were good check wiring all looked good checked coils with noid light and no power was wondering if issue is with timing chain

NOTE: The 4.7L engine is not a hemi, this forum is for owners of HEMI powered trucks.