Niagara Gazette


February 6, 2013

TOM'S CORNER: Pressure leak in the transmission system

Niagara Gazette — EDITOR’S NOTE: The Gazette has partnered with local automotive expert Tom Torbjornsen to publish his weekly national column. Tom's Corner will appear in Thursday’s editions. We're kicking things off with a reader question and answers.

TRACI FROM WILLIAMSBURG, Va.: I just purchased a 2004 Ford Explorer Limited Edition with 4x4 and automatic transmission with overdrive. It goes into reverse at an idle, but when the selector stick is put into any forward gear it has to be revved to 2000 RPM in order to go into gear. Once in gear it stays in gear and the transmission shifts tightly with no slipping. My question: What could be causing this issue and how can I fix it? By the way, it has a 4.0-liter V6 engine. I hope I don’t have to replace or rebuild the transmission. Thanks for your help.

TOM: Unfortunately I think you’re going to be looking at rebuilding or replacing the transmission. What you’re describing sounds like a pressure leak in the forward clutch inside the transmission. When you raise the rpm's up, the transmission pump puts out enough pressure to overcome the hydraulic leak; this allows the clutch to fully engage and thus the vehicle moves forward. Once the pressure has built, it will continue to be fine until the fluid pressure bleeds down again, requiring the hydraulic pressure to be built again to apply the clutch. Sorry for the bad news. Confirm my suspicions by having a fluid pressure test done while driving. Also, have a scanner hooked to the vehicle’s data port to see if any codes pertaining to transmission malfunction come up, after which you can proceed in an informed fashion.


GREG FROM LEBANON, TENN.: I own a 2002 Toyota Camry. The heater doesn’t work too well; the air never really gets hot, just lukewarm at best. The cooling system is full. What’s wrong?

Text Only | Photo Reprints
Featured Ads
House Ads
AP Video
Tributes Mark Boston Bombing Anniversary Raw: Kan. Shooting Suspect Faces Judge US Supports Ukraine's Efforts to Calm Tensions Suspect in Kansas Shootings Faces Murder Charges Ukraine: Military Recaptures Eastern Airport Raw: Storm Topples RVs Near Miss. Gulf Coast NASA Showcases Lunar Eclipse Pistorius Cries During Final Cross-Examination The Boston Marathon Bombing: One Year Later Michael Phelps Set to Come Out of Retirement First Women Move to Army Platoon Artillery Jobs Sex Offenders Charged in Serial Killings Police: Woman Stored Dead Babies in Garage OC Serial Murder Suspects May Have More Victims Family: 2 Shot in Head at Kan. Jewish Center Raw: Horse Jumping Inspires 'Bunny Hop' After Attack, Officials Kill 5 Bears in Florida Popular Science Honors Year's Top Inventions ND Oil Boom Attracting Drug Traffickers
House Ads
Night & Day
Twitter News
Follow us on twitter
Hyperlocal Search
Premier Guide
Find a business

Walking Fingers
Maps, Menus, Store hours, Coupons, and more...
Premier Guide
Front page