AfterMarketNews AfterMarketNews Auto Care Pro AutoCareCareerHub Brake&Frontend BodyShopBusiness Counterman EngineBuilder Fleet Equipment ImportCar Motorcycle & Powersports News Servicio Automotriz Shop Owner Tire Review Tech Shop Tomorrow's Tech Underhood Service Speedville

Clint Bowyer Crew Chief Billy Scott Wins Career-First MOOG 'Problem Solver' Award

Billy Scott, crew chief for Clint Bowyer and the No. 15 Maxwell House Toyota Camry, won his career-first MOOG Steering and Suspension “Problem Solver of the Race” Award after Bowyer made a late charge to finish sixth in Sunday’s Cheez-It 355 NASCAR...

Read more...

A New Way To Learn: Bosch Xperience Mobile Tour Comes To Babcox

The Bosch Xperience Mobile Tour made a stop on Aug. 5 at Babcox Media. Editors were invited to experience the simulated virtual workshop, working through a series of real-world vehicle repair problems using Oculus Rift headset technology. Two trucks,...

Read more...

Raybestos Partners With Schwartz Performance To Restore Classic '69 Mustang Fastback

Raybestos has joined forces once again with Schwartz Performance to restore an American icon muscle car: a 1969 Ford Mustang Fastback. “Raybestos and Mustang are the perfect match of history, leadership and innovation. Working with the first-class...

Read more...

Toyota HVAC Evaporator Drain Hose Clogged Due to Insect Intrusion

Vehicles in certain geographic areas may exhibit a condition where the HVAC evaporator drain hose has become obstructed with an insect nest. An insect repellent drain hose tip (ARINIX tip) is now available to help minimize future occurrences of this condition....

Read more...

Hyundai No-Start, No-Crank Condition Due to Gear Selector Range Switch

Affected Models: Tucson (2010-); Santa Fe (2010-12); Sonata (2011-); Elantra (2013-); Accent (2012-); Azera (2012- ); and Veloster (2013-). Condition: An improperly adjusted or improperly operating inhibitor switch (range switch) may result in...

Read more...

Be Wary of the Fall Maintenance Slowdown

If you think you don’t need to do any more marketing this quarter because you’ve been riding the summer vehicle maintenance wave, think again. While your car count is likely high — due to road trip inspections, oil changes, A/C service and unperformed...

Read more...

Rental Car Revelation

The past few months have been a whirlwind of travel for me. I have seen St. Louis, Los Angeles, Boston, New York and many others destinations in between. On these journeys, I have found myself behind the wheel of many rental cars. In June, I had a...

Read more...

Electric Power Steering Diagnostics

Understanding Electric Power Steering Systems Electric power steering, or EPS, is more energy efficient than hydraulic systems and does not provide assist until it receives driver input. The steering wheel position sensor and applied torque sensor are...

Read more...

How to Test Drive a Car to Check for Problems

Test Drive Diagnostics Test drives on the surface can seem like one of the most unprofitable tasks a technician can perform. But, test drives can be one of the most profitable processes a shop can do to help sell more service. You just have to have procedures...

Read more...

Rental Car Revelation

The past few months have been a whirlwind of travel for me. I have seen St. Louis, Los Angeles, Boston, New York and many others destinations in between. On these journeys, I have found myself behind the wheel of many rental cars. In June, I had a...

Read more...

Aftermarket TPMS Sensors and Scan Tools

Aftermarket TPMS Solutions Servicing tire pressure monitoring systems (TPMS) can be a quick money-maker that requires minimal labor. The service is also essential since this maintenance applies to every vehicle made or sold in the U.S. since 2008. Manufacturers...

Read more...

Fuel Tank Installation: Avoiding the Second Drop

Nothing is worse than a comeback after a fuel tank has been dropped. Discovering that the fuel tank needs to be dropped again to address a problem can kill shop productivity and profitability. Below are tips that can help you avoid comebacks and dropping...

Read more...
Home Features Articles Tool Tip: Intermittent Chuggle/No DTCs Set

Print Print Email Email

Models:
1995-’99 Buick Riviera
1995-2004 Buick Regal
1995-2005 Buick LeSabre, Park Avenue
1997-2005 Buick Century
1995-2001 Chevrolet Lumina
1995-2002 Chevrolet Camaro
1995-2005 Chevrolet Monte Carlo
2000-2005 Chevrolet Impala
1995-’97 Oldsmobile Cutlass Supreme, Ninety Eight
1995-’99 Oldsmobile Eighty Eight
1998-2002 Oldsmobile Intrigue
1995-2002 Pontiac Firebird
1995-2003 Pontiac Grand Prix
1995-2005 Pontiac Bonneville with 3800 V6 Engine (VIN K – RPO L36)

Condition
Some customers may comment on an intermittent chuggle or fishbite on light acceleration or at steady-state highway speeds (typically 50-65 mph) with no PCM DTCs set. This condition may lead the technician to suspect the TCC circuit or torque converter.

Cause
This condition may be caused by intermittent operation of the Throttle Position (TPS) Sensor.

Correction
In observed cases, the Tech II is not fast enough to consistently detect this condition during a snapshot. It is recommended to use a DVOM set to the min/max recording mode. Connect the DVOM at the TPS connector (positive lead to the TPS feedback signal pin and negative lead to the TPS ground pin).

Duplicate this condition by driving the vehicle. If the voltage dropout (less than 0.45V) is recorded on the DVOM, replace the TPS sensor (P/N 24504798) and re-evaluate the vehicle before continuing with other driveability or transmission diagnosis.

Courtesy of ALLDATA.

The following two tabs change content below.
TechShop Staff Writers

TechShop Staff Writers

TechShop Staff Writers

Latest posts by TechShop Staff Writers (see all)

Latest articles from our other sites:

GearWrench Introduces 9 New Impact Socket Sets

GearWrench has introduced nine new Impact Socket Sets to an expanded Impact Product Line. The following GearWrench socket sets are now available for purchase: SKU 84919N: 25-piece 3/8" drive...More

Makita Tools' Brushless Impact Driver Offers More Features

Makita has released the new 18V LXT Lithium-Ion Brushless Quick-Shift Mode 3-Speed Impact Driver, model XDT09M. It is Makita’s most powerful and most compact impact driver. The tool features Quick-Shift...More

Toyota HVAC Evaporator Drain Hose Clogged Due to Insect Intrusion

Vehicles in certain geographic areas may exhibit a condition where the HVAC evaporator drain hose has become obstructed with an insect nest. An insect repellent drain hose tip (ARINIX tip) is now available...More

Hyundai No-Start, No-Crank Condition Due to Gear Selector Range Switch

Affected Models: Tucson (2010-); Santa Fe (2010-12); Sonata (2011-); Elantra (2013-); Accent (2012-); Azera (2012- ); and Veloster (2013-). Condition: An improperly adjusted or improperly operating...More

Rental Car Revelation

The past few months have been a whirlwind of travel for me. I have seen St. Louis, Los Angeles, Boston, New York and many others destinations in between. On these journeys, I have found myself behind the...More

Electric Power Steering Diagnostics

Understanding Electric Power Steering Systems Electric power steering, or EPS, is more energy efficient than hydraulic systems and does not provide assist until it receives driver input. The steering...More

Rental Car Revelation

The past few months have been a whirlwind of travel for me. I have seen St. Louis, Los Angeles, Boston, New York and many others destinations in between. On these journeys, I have found myself behind the...More

Aftermarket TPMS Sensors and Scan Tools

Aftermarket TPMS Solutions Servicing tire pressure monitoring systems (TPMS) can be a quick money-maker that requires minimal labor. The service is also essential since this maintenance applies to every...More