Question about 2003 Chevrolet Tahoe
Sounds like you are having a problem with the throttle body position sensor, after replacing sensor replace air filter and clean out air box and hose if possible have some one spray the inside of throttle body with throttle body cleaner while vehicle is running do not over spray inside of throttle body as too stall motor. After cleaning throttle body reconnect everything, add a container of injecter cleaner to a full tank of gas take vehicle for a test drive, don't worry if you get a little black smoke it's just the cleaner working.
Note: since this is a fuel, air problem you should have fuel line tested for how much pressure is in the line. Problem could be in the fuel filter and pump that's inside fuel tank if it is this replace all parts pump screen filter. If this is the problem you should from now on make sure that the tank never goes below a 1/4 tank, pump needs fuel to keep it wet and so that you do not pick up any dirt in bottom of tank.
It's important that you add injector cleaner on a regular basis, you might want to add a container of water remover in tank in case you have steed your vehicle in a heated garage during this recent cold spell.
Would be a good idea to have it checked at one of your local auto parts store for any codes that may come up, before doing any work.
Posted on Apr 03, 2015
HI Sherron I'm a little unclear about what you are saying .
Do you mean the gas pedel goes to the floor by it self and then you try to push it nothing or are you pushing it to the floor and you can't accelerate.Then it says reduced pressure on the MILcomputer jargen .Dose it give any #s like PO 100 -PO109 OR A PO400 # OR any thing that says TPC or CROUSE CONTROL.
I need more information you must have codes if the MIL light is on you need to take to a parts store and get them read its free in most stores .
Posted on Apr 03, 2015
Your dash probably reads "reduced engine power", you likely have a code in your computer also. You really need the code for proper diagnosis. It can be a failed electric throttle body or failed accelerator pedal position sensor (which is made to the accl pedal). My guess is a bad throttle body.
Posted on Apr 03, 2015
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Posted on Jan 02, 2017
SOURCE: 96 cavalier wont accelerate
You have may have one of the following issues, low fuel press due to a pump or plugged filter, a plugged exhaust system, mainly the cat converter, a defective MAF sensor. Do you have any trouble codes
Posted on Jul 31, 2008
If hydraulic actuated mechanism, loss of fluid, defective master cylinder or slave cylinder at the clutch. Missing pin or other part between slave cylinder and clutch arm. Loose or broken slave cylinder mounting. Missing pin or broken part between pedal and master cylinder. If mechanical linkage, look for broken components or missing pins at moving joints. If you tried to shift into gear with engine running, you may have damaged the transmission gears.
Posted on Aug 11, 2009
make sure the oil level is up to full. sorta sounds like its low and when you go around a corner the oil sloshes away from the pickup tube
Posted on Apr 03, 2010
Try unugging the MAF sensor. I don't remember if these will run with it unplugged but it's worth a try. If performance improves then try cleaning it with MAF sensor cleaner. If there is no improvement with the above than I would suspect a plugged cat. I don't remember if this year has one cat or three. If it has one you can drop the exhaust ahead of the cat and drive it. It performance returns its a plugged cat. If it has 3 cats than you will need to remove the upstream O2 sensors and use a back pressure gauge to check exhaust back pssure. You should see less than 3/4 psi at idle Let me know if you have any questions and I'll do my best to answer them. Thank you for using FixYa.com!
Posted on Mar 20, 2012
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