Question about 1998 Chevrolet Suburban

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Not getting fuel to the throttle body when i put fuel in manually to the throttle body it will run i changed the filter but no success

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Ckeck the fuses and fuel pressure.

Posted on Mar 17, 2011

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I have a 95 Toyota Tacoma 4x4 and It will not start without putting some fuel into the throttle body. Once started it will run. But when you let it stand and cool off it won t start again. I have replaced...


The way you describe this problem the cause seems to be in the fuel system losing pressure. But even then, if you crank long enough it should start. Check your fuel pressure. It may be useful to check your fuel filter.

Mar 18, 2015 | 1995 Toyota Tacoma

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Reduiced engine power thats what it says on the dash and then it spits and sputters and somtimes looses throttle


Check for a Mass Air Flow trouble code, if no check engine light look for an air leak in air ducting between Mass Air Flow and throttle body

Mar 05, 2014 | 2004 Chevrolet Silverado 2500HD

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1987 chevy with Throttle Body... You literally have to put it to the floor to get it to start, then it'll run nice for a while thinking it'll run take it for a drive and it will shortly die on


Check all fuel lines for leaks, make sure it doesn't have bad gas in it. Listen for fuel pump when key is turned on. Change fuel filter. See if that's helps.

Dec 16, 2012 | 1988 Chevrolet K3500

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Here is another problem, my blazer runs, and at stop lights. it shuts off, what causes this problem, even though i change out the fuel pump...figured it was the fuel pump change out spark plugs, fuel...


The throttle body needs to be cleaned, grime in this area prevents the throttle plate from closing completely and allowing air to enter, making the air/fuel mixture lean. Make sure to clean the front and back sides of the throttle body. Also, disconnect the battery during the cleaning process to allow the computer to reset and relearn to the cleaned throttle body.

Jul 14, 2012 | 2004 Chevrolet TrailBlazer

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Just replaced throttle body on 2006 Aveo. Engine idles rough and will not acccelerate over 20 MPH. Any suggestions?


Hello angel 003801, if the car was running rough, and had acceleration issues before you changed the throddle body, I strongly recommend you get a new air filter. Many people are unaware that the air filter is like lungs to your engine, your engine needs a good mix of fuel and air to perform at it's peak. Also, most 10 minute oil change companies do not change the air filter, at best, some of them may take it out, hit it against something to clean some of the dirt out, and then put it back in.

If the engine seems to run better after putting in the throttle body I would still change the air filter if you haven't done that in a while. Also, make sure that the throttle body is mounted securely with no leaks, look around the area of the throttle body and make sure you didn't accidently knock of a vacuum hose, ( vacuum hoses are very small, usually black hoses, and there are several in the general area of the throttle body. If you should find a small hose that has one end that is not hooked to anything, look around for a small nipple that it may have come off of.

My goal was to provide timely and accurate information. If this has been helpful to you, please consider taking a second to click on the, " this was helpful ", button.
Thank you!

Jan 13, 2011 | 2006 Chevrolet Aveo

1 Answer

Wont start,pour little fuel in throttle body runs 4 little, changed fuel filter,psi seems good off fuel pump


The injecters may be bad, or not getting power.Check wires to injecters @ throttle body to make sure they have not rubbed bare .

Mar 08, 2010 | 1985 Oldsmobile Ciera

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99 tahoe 5.7 wont start


your fuel pressure is suppose to be 60 - 66 psi. first replace fuel filter.and check vacuum line going to fuel pressure regulator.make sure vacuum is going to vacuum line.if changing fuel filter dont help. fuel pump could be faulty.

Dec 14, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

2006 expedition hesitating during low speed excelleration


Try cleaning the throttle body with throttle body cleaner. Remove intake hose at throttle end. Spray cleaner on butterfly and open throttle by hand, spray inside throttle body and let the build up run back out. Wipe clean with clean dry cloth, and repeat. It will be hard to start after putting back on, but it will start with 5-6 engine turns. It's the cleaner in the throttle. The injectors ca be cleaned with them in, they will run clean the fuel system. I usually buy Lucas injector cleaner and add 109 octane booster from wal-mart or your local parts store. Lucas is wonderful and the booster will clean your system. A lot cheaper than a shop cleaning it.

Dec 14, 2009 | 2006 Ford Expedition

1 Answer

I have an 1989 chevy pick up truck. The truck has an rebult 350 engine. The engine runs good and strong, but when you put the gas pedal down pretty far and fast the truck starts running very rough. ...


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. 

Jun 23, 2009 | 1990 Chevrolet K2500

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