Question about 1992 Toyota Camry V6
If there are no engine codes test the vacuum system and try replacing the sensors in the air intake.
Small vacuum leaks often do not trigger the check engine light. Bigger leaks can be detected listening to the hissing noise. Smaller leaks are detected using an hand tool gauge in the vacuum lines while heating the lines at same time. If pressure goes up while heating vacuum lines, then there is a leak.Here a gauge:Actron Vacuum Gauge, Fuel Tester.
Using the same gauge you can check pressure in lines from tank to fuel pump, and on fuel pump outlet. Althought a faulty fuel pump will trigger a misfire code, better checking fuel pressure while the problem occurrs.
Check the MAF and AIT sensors. This sensors located on the air intake determine the amount of air used in the fuel mixture. Bigger faults are detected with lean or rich mixture codes triggered from O2 sensors, but smaller faults goes undetected and can still cause the engine stalling or behaving erratically.
If car is revving up and down and stalling even while driving , check the EGR valve. This valve opens and close to add recirculated gas from vacuum to the fuel mixture. Here an article illustrating testing procedure:EGR Valve Problems.
Posted on May 13, 2010
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Mar 21, 2014 | 2006 Holden Commodore SS
Dec 05, 2012 | Cars & Trucks
Oct 08, 2012 | 1989 Chevrolet Celebrity
Jun 29, 2017 | Ford V6 Pony Cars & Trucks
Dec 28, 2008 | 2000 Ford Focus
Nov 20, 2008 | 1994 Jeep Wrangler
Nov 01, 2008 | 1985 Ford Merkur XR4Ti
38 people viewed this question
Usually answered in minutes!