Question about 2005 Chevrolet Suburban
Runs good to 50 mph if you push gas pedal fast it bogs down
Have you had the converter checket out. If they get plugged it will lose power
Posted on Jan 23, 2013
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
first thing i would do i would check fuel pressure if you have good fuel pressure then the next thing i would unbolt the exhaust from the exhaust manafold and then try to start engine if the engine starts up and runs fine then you have clogged up exhaust converters
terry - Master tech
Posted on Jun 18, 2009
SOURCE: I have an 1989 chevy
It sounds like you may have a bad fuel pressure regulator. The fuel pressure regulator is in the throttle body housing and the throttle body in your truck works best at 13psi to 15psi, Any other setting will cause problems. Check the vacuum hose to the fuel pressure regulator at the throttle body and check the fuel pressure at the shredder valve. The way the throttle body works is for the first 75% of the throttle, the ecm uses the signal form the O2 sensors to control the air fuel ratio and tries to keep it to 14.7:1 but at full throttle it by pass the O2 sensor signal and runs the engine richer and advances the timing so you can drive with wings like red bull. The Map sensor then takes over to promote the engine to run richer so you don't run lean and detonation occurs. If there is a problem with your throttle body position sensor, map sensor. and fuel pressure regulator, then at WOT (skinny peddle down) you may be running to rich. The other thing to is if your fuel pressure drops at WOT you'll get a lean condition and then you'll have detonation ( Knocking) and the timing will be turned down to keep detonation from occurring again and that may be the cause if your check engine light too. First and easiest thing to do is change the fuel filter and add fuel injector cleaner to you gas tank, buy a throttle body cleaner and clean your throttle body to make sure you don't have varnish build up around the throttle body, just follow the instruction on the can. Throttle body cleaner not carb cleaner. Start with that and i hope we don't have to do any more to get your truck running like a rocket. Good luck and keep me posted. Be glad to help.
Posted on Jun 23, 2009
SOURCE: 2003 suburban Losing power.....
Do a back pressure check on the cat converter if gas powered. Diesel doesn't have one. If you get 1lb or more psi of back pressure the cat is bad. Also check the fuel pressure with a gauge when this happens.
Posted on Jul 16, 2009
Tips for a great answer:
Nov 06, 2014 | 2005 Chevrolet TrailBlazer
Oct 03, 2013 | 1990 Pontiac Grand Prix
Sep 09, 2013 | Cars & Trucks
Mar 20, 2017 | 1993 Oldsmobile Bravada
Apr 11, 2012 | 1990 BMW 525i
Dec 12, 2009 | 1995 Honda Accord
Nov 17, 2009 | 1997 Chevrolet S-10 Pickup
Sep 23, 2009 | 2002 Isuzu Trooper
Aug 02, 2008 | Triumph Tr 8 Cars & Trucks
May 22, 2014 | 2005 Chevrolet Suburban
121 people viewed this question
Usually answered in minutes!