2011–2012 Ram 1500: Cranks but won't start (TIPM fuel pump relay)
Likely causes, ranked
- Fuel pump relay inside the TIPM (external relay bypass or TIPM replacement)Shop
- Failing fuel pumpShop
Real-owner fix counts will appear here as reports come in.
DIY or shop: See DIY or shop section
Parts to check
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Symptom: The engine cranks but won't start, or starts and dies a few seconds later. It may then start fine later. Other strange electrical behavior is possible.
Likely causes
- The TIPM fuel pump relay. The relay is built into the Totally Integrated Power Module's circuit board. When it fails, the pump never turns on. RamForum owners work through whether it's the pump or the TIPM.
- The fuel pump itself.
How owners tell the difference
- Listen for the pump's 2-second hum when you turn the key to run.
- Check fuel pressure at the rail.
- If the pump runs when powered directly, the TIPM relay is the suspect.
DIY or shop?
External relay bypass kits are a common DIY fix. A TIPM replacement may need programming at a shop.
Useful steps
- Do the key-on listen test.
- Check the fuel pressure.
- Then decide between the relay bypass, TIPM, and pump.
Vehicle focus: 2011–2012 Ram 1500.
Safety / mechanic note
A stall while driving can be dangerous. Don't ignore intermittent stalling.
Recalls & service bulletins
No recalls or service bulletins are listed for this page yet.
NHTSA complaints: 196 keyword-matched complaints for Ram 1500 2011–2012 (of 1,386 unique complaints queried, NHTSA complaints API by model year, queried 2026-10-15).
Always check your VIN for open recalls at nhtsa.gov/recalls.
Sources
What actually fixed it?
Had this problem? Tell other owners what the real fix was. Reports are counted above; we never show made-up numbers.