Saturday, November 16, 2019

Volkswagen Jetta A/C Does Not Blow Cold Air




A busted A/C on a Volkswagen Jetta is the problem of the day. We just solved an A/C problem on a Chevy Equinox, so let's see what we can find on the Volkswagen Jetta GLS. The Volkswagen Jetta is a great car and with a little bit of maintenance will last you a long time. But there are some issues with the A/C. 1 complaint from Volkswagen owners. Customer Concern: The A/C system does not blow cold air. There is a vibration and/or noise in the A/C lines that can be felt inside the passenger compartment of the vehicle. And once again we will start with some basic tests to see if we can find any obvious problems. 1. Install a gauge set on the Jetta and look at what the gauges say. A. If the high side pressure is high and the low side pressure is high, that would indicate an A/C compressor overcharge situation (this could be refrigerant or oil overcharge).





B. If the high side pressure is high and the low side pressure is low, this could indicate that the a/c compressor is stuck at its maximum displacement or that there is an other-than-specified restriction in the system. Signs of frost on the lines indicate the point of restriction. 2. Flush the A/C system with nitrogen or refrigerant. This requires using a "dummy" restrictor that is a straight opening at the flush point. DO NOT under any circumstances use air to flush or blow out the lines. This will introduce moisture to the system that will be difficult to get rid of. Flushing the A/C ensures that all the refrigerant and oil is out of the system so that when the charge procedure is performed, one can be as accurate as possible about the amount of refrigerant and oil in the system. 3. Inspect the restrictor for signs of damage. Look to see if the restrictor is completely plugged. On expansion-type restrictors, look to see if anything is blocking the movement of the valve. 4. Inspect the A/C lines for evidence of desiccant coming apart. This will typically look like a gray sludge paste (think valve-lapping compound). If the desiccant has come apart, flush the A/C system. The desiccant can plug up the restrictor or cause damage to the compressor. 5. When replacing the Volkswagen Jetta's compressor it is recommend to drain all the oil out of the compressor (if pre-filled) and measure the amount of oil. This way, the actual amount of oil in the A/C system can be known and accounted for. Tech Tips: VW/Audi recommends replacing the drier unit along with the compressor.





We prefer the very good automatic. Most models offer a choice of 5-speed manual or 6-speed automatic transmission. We found the sport mode for the 6-speed automatic sharp and effective. We used it in city driving, where it responded crisply on San Francisco's hills, and in slow-and-go freeway traffic, where it kept the transmission in third gear rather than upshifting and downshifting all the time. Manual mode can be used for spirited driving, shifting at the lever. It's programmed well, responsive and obedient. Jetta Hybrid boasts an EPA-estimated 42/48 mpg City/Highway, 45 mpg Combined. We drove a Jetta Hybrid for one week, covering 340 miles, half city and half freeway, and we only got 35 mpg. Jetta Hybrid demands Premium gasoline, while the 2.5-liter five-cylinder on Jetta SE and SEL demands only less-expensive Regular. The Jetta TDI Sedan and Jetta SportWagen TDI use the latest turbo-diesel direct-injection technology in their engine, making 140 horsepower and 236 pound-feet of torque, while getting an EPA-rated 30/42 mpg City/Highway.





To keep the price down, Volkswagen uses an old-school rear torsion beam suspension in Jetta S and SE models; the ride is firm, but most owners won't miss a multi-link suspension. The build quality is impressive. The Jetta is quiet at speed and feels solid. Rear disc brakes have been added to these models for 2013, after gripes that the drum brakes on 2011 and 2012 models were archaic. Engine 2. All rights reserved. Hi! We notice you're using an ad blocker. Please consider whitelisting Autoblog. We get it. Ads can be annoying. But ads are also how we keep the garage doors open and the lights on here at Autoblog - and keep our stories free for you and for everyone. And free is good, right? If you'd be so kind as to whitelist our site, we promise to keep bringing you great content. Thanks for that. And thanks for reading Autoblog. Here's how to disable adblocking on our site. Click on the icon for your Adblocker in your browser. A drop down menu will appear. The exact text will differ depending on the actual application you have running. Refresh the Autoblog page you were viewing. You still haven't turned off your adblocker or whitelisted our site. It only takes a few seconds.





The result: more accurate cornering. Safety is never optional. Safety is a core value to us. And while we can't predict everything you might encounter, we can and do spend long hours trying to help you prepare for it. Front and rear crumple zones help absorb crash energy, while a rigid safety cage helps deflect it away from the driver and passengers. In the event of a collision that deploys airbags7, the ICRS can turn off the fuel pump, unlock the doors, and activate the hazard lights.6 It helps react if you might not be able to. 6The Intelligent Crash Response System (ICRS) will only activate in a collision where the airbags deploy or safety belt pretensioners activate. Not all collisions cause airbags to deploy or safety belt pretensioners to activate. 7Airbags are supplemental restraints only and will not deploy under all crash circumstances. Always use safety belts and seat children only in the rear, using restraint systems appropriate for their size and age. Dive into the details. There's a lot more to the Jetta than what you see here.