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Are All Cars ‘Supercars’ Now?

I attended an open house at Smokey’s Dyno in Akron, Ohio, last month. The shop was filled with Lamborghinis, Jaguars and other high-end cars. It was a great chance to look under the hoods of some supercars. The shop even had a rare McLaren P1 sitting...

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Documenting Inspections: Are You Leaving Maintenance Dollars on the Table?

How do you translate scribbles on a ­repair order into sales? There is no magic trick involved — the key is to document the vehicle ­inspection process. The more you know about your customers’ vehicles, and the more you are able to document...

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The Invisible Killer Of Brake Systems

Brake fluid maintenance services can be the toughest item to sell. Oil can become dark and transmission fluid can smell funny, but brake fluid in the reservoir can look clear and still be in need of replacement. Brake fluid can become contaminated...

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Mazda: Performing Regular Undercar Maintenance

This month, we’ll take a look at brake and undercar service on the Mazda vehicle lineup, with the footnote that even though this type of work ­becomes routine when you have a preventive maintenance mindset, good work habits from beginning to end are...

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Import Automatic Transmission Diagnostics

Don’t be alarmed if you pull an automatic transmission trouble code when diagnosing a “check engine” warning light! Since the automatic transmission operation has a major effect on grams-per-mile exhaust emissions, you’re going to see the...

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Honda: Vehicle Won’t Move or Barely Moves

A customer brings in a vehicle that won’t move forward, ­­backward or both. Check first to see if it grinds or clicks. And does the speedometer read a lot higher than you’re actually going? Chances are the driveshaft is disengaged. This can...

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TPMS Service Tip: Ask the Right Questions

If there is one piece of major advice for any tire tech facing a TPMS issue, it would be this: Test before you touch, and document the answers you get. Understanding the potential TPMS land mines can save time and money and eliminate frustrations. Get...

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False ABS Activation After Wheel Bearing Hub Replacement

Vehicles: All ABS-equipped vehicles Condition: Vehicle had wheel bearing hub replaced on one side. Repair Procedure: If you diagnose a bad hub bearing on one side of a vehicle and the ABS wheel speed sensor or tone ring is integral to the bearing,...

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Are you afraid of selling alignments?

I am starting to notice a trend when it comes to alignments. It’s not the vehicles that are changing, but rather the attitudes toward alignment services — and it happens at independent repair shops, franchise shops and even dealers. The alignment...

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iATN Exceeds 2 Million Forum Messages

The number of messages in the professional automotive discussion forums of the International Automotive Technicians Network (iATN) exceeded 2 million in early December 2014, with the Shop Management and Technical Discussion forums being the most popular...

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Diagnosing Starter Misses

Contributing writer Gary Goms was called to a friend’s shop to help with a no-cranking condition on a 2006 Chevy Tahoe. After diagnosing a faulty PCM ground, locating the missing ground proved to be problematic. Find out how Gary solves The Case...

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Snap-on Adds Diagnostic Calculator To Website

Snap-on announces a new diagnostic calculator feature has been added to its website at http://diagnostics.snapon.com to help automotive repair technicians and shop owners determine how much profit they could be making by using a Snap-on diagnostic platform,...

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Home Emissions Tech Tip: Dodge Neon Sport Code P0340 Intermittently

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Some 2004-’05 Dodge Neons will intermittently experience a P0340 code. Here are two fixes to consider.

Vehicle Application: 2004-’05 Neon 2.0L

Customer Concern: Bucks and misses intermittently while driving. Code P0340 is stored.

Potential Cause: Camshaft position (CMP) sensor.

Tests/Procedures
1. Unplug the CMP sensor to see if the symptoms can be duplicated.

2. If yes, inspect the connector and if OK, replace the CMP sensor.

Tech Notes: This engine would not run over 2,100 rpm with the CMP sensor unplugged. It would start but had very long crank time.


Vehicle Application:
2005 Neon 2.0L

Customer Concerns: Codes P0340 sets intermittently. Engine dies out for the customer; runs OK for a period of time, then customer has to drive a long time before it will act up again.

Potential Causes: CMP sensor.

Tests/Procedures
1. Monitor the 5-volt power supply (orange) to the CKP and the CMP. If it goes low when it acts up, unplug the vehicle speed sensor (VSS). The VSS shares the power supply circuit for the CKP and the CMP. Replace the VSS if that brings the voltage back up.

2. Verify both the CKP and the CMP signals with a labscope and compare to a normal pattern.

Courtesy of Identifix.

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