2011 Dodge Ram 1500 - Crank/No-Start

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OutlawFMX

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Apr 26, 2024
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Canada
Ram Year
2011
Engine
4.7
Got a 2011 Dodge Ram 1500 4.7L - Been having a crank/no-start issue for awhile, it happens every morning after sitting overnight and tends to happen again after it's been sitting for a few hours after a drive.

What I've noticed so far, is if I go out and try to turn it over the first time in the morning it will start and immediately bog out within like half a second, or not at all and then each attempt after it will just crank over and over trying to start up.

Eventually, it takes quite a few cycles of the key, if I do it slow it can take 10-15 turns and it will eventually start up, or sometimes I can cycle the key 5-6 times very fast and it will turn over as well. It's had no rough idle really, no sputtering and hasn't stalled yet while driving once it's running. Also, once I've got it started and/or gone for a drive, I can shut it off and it starts no problem, maybe for like a half hour or so afterwards. It really seems to not start after sitting for more than an hour or two specifically.

I recently had the fuel pump changed, according the garage I went to that was the issue, which is BS 'cause that same night it was still doing the exact same thing, with the identical symptoms. So I'm now thinking it's the fuel pump relay potentially but want to see if anyone has any other insight into this. Especially where it's hard to recreate the issue at a shop if the truck hasn't been sitting.

Posted below are the only codes I got myself, and I've erased them since, after a few days or a long drive, the CEL will come back with 1 or both of the same codes.
-p2098
-P0456
 

FiremanE53

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Jun 19, 2024
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Washington
Ram Year
2011
Engine
Hemi
I had the same problem. The dealership unfortunately could not reproduce it … I did a lot of research and diagnosis it myself … Fuel pump relay …. It’s built in to the fuse box ( bad design) there are several aftermarket repair kits that allow you to bypass the built in relay. I did a quick search online and found a bypass with a fuel shutoff if wanted. Fixed the problem immediately…
 

Jeepwalker

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Ram Year
2012 Reg Cab, 4x4
Engine
5.7 Hemi
Yeah, 2011 was a known year where the fuel pump relay on the TIPM (computer) was known flaky. Read THIS. But also go watch a video on 'Ram fuel pressure regulator' too.

Your options if it's the relay are to:
1) Install a $12 fuel pump bypass (Amazon/Ebay/etc).
2) Buy a new exact replacement relay off ebay for $15 or whatever it is, and solder a new one onto your tk's TIPM board.
3) Send it in for repair (above link).
4) BC you are in Canada, it's also possible if you're in the rust-belt, the TIPM has corroded traces, wires, or main connector. You might gently wiggle the bundle of wires under the fusebox and see if that changes anything, ...causes it to start.

As I say, consider watching a video on the fuel pump regulator which is back down by the brake booster. That could be the problem too. There's probably a video on the TIPM relay too ...how to determine which is which. They used the same board on other vehicles too back then.

:waytogo:
 
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