Piston Slap: Bullish on Ford's Electronic Automatic Temperature Control?

Ryan writes:

Hi Sajeev,

I have a problem with the air conditioning not functioning properly on my ’89 Ford Taurus LX equipped with Electronic Automatic Temperature Control (EATC).

When I start the car on a warm day the AC can blow icy cold air immediately, but the temperature gradually rises to ambient temperature by the time I reach the freeway, and is bad enough that I turn the EATC off. When I turn on the EATC by pressing AUTO, it often feels like it’s blowing maximum heat. I have noticed that when this happens the AC compressor clutch is not cycling on and off. During the winter, the AC compressor clutch clicks on and off. The problem seems to be intermittent and only occurs during warmer months. Also, during startup, you can hear an audible “whirring” noise in the dash, and that started to sound abnormal about the same time the AC stopped working. By “abnormal” I mean it lasts much longer than it used to. I believe the noise I’m hearing is the temperature blend door being moved so the EATC knows the position of the blend door.

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  • Make_light I drive a 2015 A4 and had one of these as a loaner once. It was a huge disappointment (and I would have considered purchasing one as my next car--I'm something of a small crossover apologist). The engine sounded insanely coarse and unrefined (to the point that I wasn't sure if it was poor insulation or there was something wrong with my loaner). The seats, interior materials, and NVH were a huge downgrade compared to my dated A4. I get that they are a completely different class of car, but the contrast struck me. The Q3 just didn't feel like a luxury vehicle at all. Friends of mine drive a Tiguan and I can't think of one way in which the Q3 feels worth the extra cost. My mom's CX-5 is better than either in every conceivable way.
  • Arthur Dailey Personally I prefer a 1970s velour interior to the leather interior. And also prefer the instrument panel and steering wheel introduced later in the Mark series to the ones in the photograph. I have never seen a Mark III or IV with a 'centre console'. Was that even an option for the Mark IV? Rather than bucket seats they had the exceptional and sorely missed 60/40 front seating. The most comfortable seats of all for a man of a 'certain size'. In retrospect this may mark the point when Cadillac lost it mojo. Through the early to mid/late 70's Lincoln surpassed Cadillac in 'prestige/pride of place'. Then the 'imports' took over in the 1980s with the rise of the 'yuppies'.
  • Arthur Dailey Really enjoying this series and the author's writing style. My love of PLC's is well known. And my dream stated many times would be to 'resto mod' a Pucci edition Mark IV. I did have a '78 T-Bird, acquired brand new. Preferred the looks of the T-Bird of this generation to the Cougar. Hideaway headlights, the T-Birds roof treatment and grille. Mine had the 400 cid engine. Please what is with the engine displacements listed in the article? I am Canada and still prefer using cubic inches when referencing any domestic vehicles manufactured in the 20th century. As for my T-Bird the engine and transmission were reliable. Not so much some of the other mechanical components. Alternator, starter, carburetor. The vehicle refused to start multiple times, usually during the coldest nights/days or in the most out of the way spots. My friends were sure that it was trying to kill me. Otherwise a really nice, quiet, 'floaty' ride, with easy 'one finger' steering and excellent 60/40 split front seat. One of these with modern mechanicals/components would be a most excellent highway cruiser.
  • FreedMike Maybe they should buy Twitter now.
  • FreedMike A lot of what people are calling "turbo lag" may actually be the transmission. In this case, Audi used a standard automatic in this application versus the DSG, and that makes a big difference. The pre-2022 VW Arteon had the same issue - plenty of HP, but the transmission held it back. If Audi had used the DSG, this would be a substantially quicker, more engaging car. In any case, I don't get these "entry lux" compact CUVs (think: Cadillac XT4, Lexus NX, BMW X1, etc). If you must have a compact CUV, I can think of far better options for a lot less money. And, no, the Tiguan isn't one of them - it has the Miller-cycle 2.0T, so it's a dog. But a Mazda CX-30 with the 2.5T would fit the bill.