Won't start

[cynlaker]

2011 Ram 1500 5.7 Won't start . Read article on here & used info to test mine. Very low voltage 1.5 volts & varied on fuel pump fuse 25 . Pushed meter lead on it
& closed fuse cover on lead to hold in place . Got 12 volts & truck started. shut off & tried again. Low volts & won't start. After a few cranks got 12 volts again & it
started. Shut key off & 12 volt showed on fuse with key off . Swapped relays , no change. Hate to replace fuse integrated module , cost & not sure that is the problem.
Already spent a 12 pack working on it. Any ideas ?

 

[KoboldTaco]

When I read your post, I thought voltage regulator. Have you had that checked? When you can get it started, any symptoms of that failure? Pulsing lights etc?

 

[cynlaker]

Got it started . voltage seems good when running. Pretty solid 14 volts , no pulsating.

 

[KoboldTaco]

Got it started . voltage seems good when running. Pretty solid 14 volts , no pulsating.

Hows your grounding? All terminals checked? Starter, alternator etc?

 

[cynlaker]

As far as I can tell . Cranks good, charging system good . Intermittent fuel pressure . Caused by low voltage from control module .

 

[Burla]

You can bypass TIPM on fuel pump relay or ignition, just search tons of stuff on it. If you can't fix it "proper" and need to be somewhere.

 

[Jeepwalker]

New For 07-16 Dodge Ram 1500 2500 3500 TIPM Repair Fuel Pump Relay Bypass Cable | eBay

Need a new TIPM?. Fuel Pump not getting power?. Car won't start?. Condition is "New". We provide the best cable on the market using the highest quality 14 AWG Silicone,PVC (105c). Our 14 AWG wire is upgraded to provide 20 amp capacity.

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If it IS the TIPM fuel pump relay and you don't mind soldering, you could swap the fuel pump relay (on the TIPM board) with the horn relay. They're the same relays. Or buy a new one on ebay for $10 or so, and solder it on the TIPM board. There's a youtube video how to do it.

New NEC/TOKIN EX1-1F1J Relay DIP-5 for for DODGE RAM CHRYSLER TIPM FUEL PUMP | eBay

New NEC TOKIN EX1-1F1J relay for DODGE, RAM, CHRYSLER & likely many more attaches to TIPM (Total Integrated Power Module) for several aspects of the vehicle such as Fuel Pump, Starter and more. 1X NEC TOKIN EX1-1F1J relay.

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[jws123]

New For 07-16 Dodge Ram 1500 2500 3500 TIPM Repair Fuel Pump Relay Bypass Cable | eBay

Need a new TIPM?. Fuel Pump not getting power?. Car won't start?. Condition is "New". We provide the best cable on the market using the highest quality 14 AWG Silicone,PVC (105c). Our 14 AWG wire is upgraded to provide 20 amp capacity.

www.ebay.com

If it IS the TIPM fuel pump relay and you don't mind soldering, you could swap the fuel pump relay (on the TIPM board) with the horn relay. They're the same relays. Or buy a new one on ebay for $10 or so, and solder it on the TIPM board. There's a youtube video how to do it.

New NEC/TOKIN EX1-1F1J Relay DIP-5 for for DODGE RAM CHRYSLER TIPM FUEL PUMP | eBay

New NEC TOKIN EX1-1F1J relay for DODGE, RAM, CHRYSLER & likely many more attaches to TIPM (Total Integrated Power Module) for several aspects of the vehicle such as Fuel Pump, Starter and more. 1X NEC TOKIN EX1-1F1J relay.

www.ebay.com

I have done what is stated above wasn't that hard still running fine 4 years later saved tons of money just make sure you buy a good solder gun with a very small tip.