Piston Slap: The B7's Bemoaning Fuel Pump?

Paul writes:

Hi Sajeev, I have an opinion/advice question for your column:

I have an ’05 Audi S4 (B7 generation), and this is not a question about this model’s notorious timing chain that so frequently scandalizes car website comment sections.* I have a longstanding issue with fuel pump vibration. It is extremely noisy when it primes, making a rapid clicking or clunking noise that is audible both inside and outside the car. It only lasts for the priming process, and afterwards, the car starts and runs as normal. There is no hesitation in starting, misfiring, or power loss. It is only a noise.

I assumed it was the fuel pump, so I replaced it, but the problem did not go away. I took it to a German car specialist that I’ve used for many years, someone trusted but also somewhat expensive. He confirmed that the pump is not at fault, but suspects that the housing for the pump — which is built into the fuel tank — is broken. There is some kind of vibration dampener assembly that not doing its job and the noise is from the pump rattling the housing around during priming.

Repairing this, according to him, would involve replacement of the entire fuel tank.

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Report: NHTSA to Fine Fiat Chrysler $105M

The National Highway Traffic Safety Administration will fine Fiat Chrysler Automobiles $105 million for botching the recall of more than 11 million cars, including 1.6 million Jeeps with a fuel tank issue, the Wall Street Journal is reporting.

The automaker faced fines of up to $700 million.

As part of the settlement, FCA will agree to an independent monitor to audit its recalls. On Friday, FCA announced it was recalling 1.4 million cars and trucks for software that could be hacked and controlled remotely.

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Balls Of Fire, Then And Now

Chrysler’s recent decision to snub a recent NHTSA recall request is big news. I need not restate the facts of the story, if you are a “car guy” and haven’t heard the sordid details, or noticed the dramatic photos of burned out Jeep Grand Cherokees and Liberties posted all over the internet in the past few days, you must live under a rock. With 2.7 million vehicles involved the costs of conducting such a recall would be staggering but, ultimately, inaction may cost the company even more money if consumers lose confidence in the brand.

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  • SCE to AUX I didn't know they had 80 employees to lose.
  • SCE to AUX Discounting for EPA estimates, full load, and working strictly between 20% and 80% charge, I estimate about 80 miles of real, actual range.Useful, I suppose, but definitely local service. If you can refill over lunch then maybe you can double that distance.Delivery work is notoriously fuel inefficient, so an electric van could make business sense depending on the MSRP.
  • Syke Just got my Bolt's battery recall done yesterday. Happily, we've got a dealer that's supporting the Bolt competently, getting the battery kit was supposed to take five weeks since I signed the work order. It took two and a half. Pulled the car in 0730 Monday, got a call at 1600 that afternoon saying I could pick it up. Didn't get down there until this morning, 255 miles range with frost on the windows. I'm happy.
  • Syke Nice. Competent. Definitely a useful tool.
  • Dukeisduke VinFast? More like SinkingFast.