Question about Honda Cars & Trucks
Run fault codes to find the sensor that is out and replace it . Timing is set by the CPU and position sensors and the problem may be in the HO2/S sensors that is requiring more fuel than is necessary.
Posted on Feb 15, 2014
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
SOURCE: 1991 Camry running rich
check for vacuum leaks especially around the intake manifold gasket. Although the engine appears to be running rich, it could also be misfiring due to being too lean in one cylinder. When the cylinder doesn't fire the charge, it goes into the exhaust completely unburned and looks like a rich running condition due to the unburned fuel. If it is a vacuum leak causing the problem, the engine will run fine at road speeds but misfire at idle and not pass smog.
Posted on Feb 07, 2009
true the EGR can really make a change and it should have been the first thing too look at because its the cheapest and easy to install
Posted on Feb 19, 2010
Have a code test done (most larger parts stores do that free) In some cases you may need a shop to put a scanner on it to find specific out of range sensors that may not yet be bad enough to set a code.
I'd also check all vacuum lines and line connections as a small leak can alter the system readings. All the sensors on your car work together and the computer reacts to all the information it receives... Bad info in, bad info out...Only good testing will find the problem.
Primary sensors to pay attention to are the coolant temp sender, MAP sensor, throttle position sensor, manifold air temp sender, mass air flow sensor (if you have one) and the egr valve.and pcv valve (if you have them)
Good testing involves using a digital multi-meter and using instructions for that in chilton or haynes manuals. Replacing parts without testing can get really expensive. (but you have already found that out)
Posted on May 24, 2010
Tips for a great answer:
Jan 11, 2016 | Toyota Cars & Trucks
Feb 19, 2015 | Cars & Trucks
Jun 12, 2017 | 1998 Honda Civic
Apr 04, 2010 | 1992 Honda Civic
Mar 09, 2010 | 1991 Ford F150
Jan 19, 2010 | 2004 Honda Civic
Nov 29, 2009 | 1997 Honda Civic
Jul 29, 2009 | 1992 Oldsmobile Bravada
Jan 03, 2009 | 1992 Honda Accord
Sep 28, 2008 | 2002 Lexus ES 300
106 people viewed this question
Usually answered in minutes!