Piston Slap: CAN Busing Around a No-Start Van?
Bob writes:

Hello Sajeev,

My wife’s 2012 Grand Caravan has a quirk: an intermittent no start condition when the key is inserted into the ignition and turned. Dash lights come on, but engine doesn’t crank. Doesn’t seem to matter if I cover the brake or not. Doesn’t seem to matter if the row the gear selector a couple times. After 3 or 4 attempts of turning the key it suddenly starts and drives.

I researched fuse boxes, but the symptoms don’t quite match. I researched the neutral switch device, but once again symptoms don’t quite match. Ignition switch might be the culprit? My red herrings:

  1. The car has stalled, intermittently, a half-dozen times while driving to work at roughly 35 mph. Pull over, and it restarts.
  2. My best friend’s wife has a 2013 Town & Country with the same problem. We were both shocked.
  3. When we first bought the car, we lost the one and only original key. So not wanting to pay the dealership fee of $500+, the internet found a guy who could do it from the back of his car for $200. The keys are Dodge keys, but not Grand Caravan specific. They have worked fine, but I wonder if once in a blue moon the ignition switch decides it doesn’t like the impostor keys? And my friend, who has the same problem, has their original keys?

The van has been a godsend for our three kids and dogs, so the idea of going to a SUV or Mega-truck sounds like a lot of money for less space, but I can’t have her driving around wondering if she will stall in traffic, or — more annoying — just can’t start after loading up to go somewhere with the kids. The dealership is useless unless they can replicate it. And it never does it when you want to show someone.

Perhaps the car is possessed by the ghost of passenger from its prior rental life?

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Piston Slap: Relays Have a Fuel Pump Oil Pressure Switch?
Che writes:Recently my daughter ran her 2005 Saturn Relay a quart and half low on oil. Alarms started sounding and vehicle shut off. No noises from the engine. I refilled the oil, but it won’t crank. It’s in disabled mode now. I don’t know how to reset it. Any suggestions?
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Piston Slap: Commandeering The Commander's Electrics?

(photo courtesy: productioncars.com)

Brett writes:

Sajeev,
Brett here. Got a weird one, or maybe it is not that weird since it involves a Chrysler product and electrical gremlins. My father drives a 2006 Jeep Commander, 5.7-liter HEMI, basically loaded. Overall, he likes the Jeep. It has about 104k miles on it. Anyways, it is his forth Jeep and he is having some weird electrical problems.

Imagine that, a Chrysler product with electrical problems…

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Piston Slap: Throwing (Ignition) Parts at a (Fuel) Problem?

Chris writes:

Hey Sajeev,

Long time lurker here. Since you asked so nice, here’s a problem that I haven’t managed to troubleshoot myself, and so far my own searches & forum postings haven’t nailed an answer. My girlfriend drives a 99 Mazda Protégé. If driven for an extremely short distance (like from the street into the garage), it will not start the next morning. It turns over just fine, but doesn’t catch.

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