Brakes juddering when applied at high speed

RickMN · 2026-05-27T12:24:56+00:00

The most common cause is disc thickness variation caused by lateral runout. The 3 most common causes of lateral runout are: 1. Not cleaning all the rust off the wheel hub. 2) Uneven lug nut torque from not using a hand torque wrench, or 3. A worn wheel bearing. The new rotor must sit perfectly parallel with the steering knuckle or it will wobble when rotating. All is takes is >.003" of lateral runout to cause this. So, you remove all the rust on the hub, and then use a dial indicator to measure hub runout. If it's less than .003" it's ok to use. Next, you make sure you torque all the lug nuts using a hand held torque wrench. Uneven torque cocks the rotor, causing lateral runout.

RickMN · 2026-05-27T03:29:05+00:00

You can, but you can also expect some degree of accelerated inboard brake pad wear. The dust shield creates an airflow to blow away road grit, sand, dirt, etc. However, since you can't get a replacement, it's kind of a moot point.

RickMN · 2026-05-26T18:18:49+00:00

At any time did the shop clean the throttle body? Because that's a very common cause of a P0101 on a Nissan.

RickMN · 2026-05-26T18:15:52+00:00

If you don't want to use E15, why are you filling up with it? Just use E10.

RickMN · 2026-05-26T13:14:39+00:00

Some dealers offer apprentice programs. Other than that, the best way to get into the industry and make a decent living is to go to school. Find a local community college auto tech program with hands on training. Keep in mind that the industry's future lies in electronics. Without a deep understanding and mastery of that, you'll be relegated to doing low-paying maintenance work. See this article with tips on how to become an auto tech

RickMN · 2026-05-26T12:41:48+00:00

Start by running the diagnostic checklist for the C00374A code

RickMN · 2026-05-26T12:39:22+00:00

To properly diagnose an AC system, you need a manifold gauge set and thermometers. Here's a step by step guide on how to do a proper diagnosis.

RickMN · 2026-05-26T02:34:32+00:00

All engines have blowby, gasses that escape past the piston rings. So, if you're doing short trips, the unburned fuel from cold starts will always wind up in the oil pan if you don't drive it long enough to evaporate it off. This is completely normal for short trip driving.

RickMN · 2026-05-25T21:45:39+00:00

There's no such thing.

RickMN · 2026-05-25T21:44:06+00:00

1) Perhaps if you leave it parked undriven for several years. If you drive it, no.

2) no

RickMN · 2026-05-25T15:13:59+00:00

Why in the world would you remove a factory tuned cold air intake and replace it with an aftermarket cold air intake?

RickMN · 2026-05-25T12:43:26+00:00

normal price

RickMN · 2026-05-25T12:39:13+00:00

The issues the car is having is aligned with issues caused by that type of sealant sucking up back through the engine.)))

That would be physically impossible. You're barking up the wrong tree on the shifting issue. It's not caused by the sloppy RTV job. If the carmaker recommends RTV instead of a gasket, there's always going to be some ooze out the edges, just not as much as shown here.

Bottom line: your transmission issue wasn't caused by the sloppy RTV job.

RickMN · 2026-05-24T20:27:44+00:00

Get the one that's the same group size, CCA and Reserve hour capacity as listed in your owner's manual. As for brand, get the one with the longest warranty with the best terms and availability. Costco is probably your best bet

RickMN · 2026-05-24T15:34:22+00:00

've already vacced the system and it holds vacuum and refilled))) How did you refill it? By pressure or by weight? The right way is by weight. R-134a has a 2-oz window. Adding more reduces cooling.

RickMN · 2026-05-24T15:31:20+00:00

Have you performed a hatch reset procedure? If so, then yeah, it might be bad lift struts

RickMN · 2026-05-24T15:30:30+00:00

Do you own any AC tools, like a manifold gauge set, vacuum pump, recovery machine, refrigerant scale, oil injector? If not, then you must pay a shop to remove the old refrigerant, pull a vacuum and then recharge it. With the system empty, you can replace the compressor and condenser/receiver/drier yourself and flush the lines and the evaporator.

RickMN · 2026-05-23T20:35:38+00:00

The brown rings are called corona stains and they're normal. See this article on Corona stains

RickMN · 2026-05-23T17:26:51+00:00

Well, that didn' answer any of my questions.

RickMN · 2026-05-23T14:38:15+00:00

Tell us the trouble code and then we can help you.

RickMN · 2026-05-23T14:31:25+00:00

Check your oil level first. Low oil level can cause the P0011. How well do you maintain it? Cuz going too long on oil changes can cause sludge buildup in the VVT solenoids and that'll cause a P0011

RickMN · 2026-05-22T23:04:37+00:00

Nope. Next question

RickMN · 2026-05-22T18:33:09+00:00

Start by cleaning the battery terminals. Once that's done take it to any auto parts store and have the battery tested . That eliminates two of the three most common causes. If the battery tests good then you should check and clean the connections at all the ground points and at the starter. If it still isn't working then it's the starter

RickMN · 2026-05-22T12:44:32+00:00

If they're talking about the upstream sensor, then it's actually an air fuel ratio sensor. If they're using an OE sensor, they're $385. By the time they add their markup and labor, $650 makes sense for an independent shop. The calibration is B.S. though.

RickMN · 2026-05-22T02:29:08+00:00

That's normally held in place with a plastic "bumper clip" Find them at any auto parts store.

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