Question about 2001 Chevrolet Astro

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Bucking upon acceleration uphill, not any other time. Hard buck not just sputtering

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Depending on miles, this could be a timing problem. Also you may want to change plugs, wires, fuel filter and clean fuel injectors.

Posted on Jul 17, 2009

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If the sputter got real bad, I could smell what smelled like weed eater gas inside the cabin. As you could also imagine, there is a loss of power.

Feb 03, 2016 | 2004 Mercury Montery

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Bucking and sputtering


could be bad plugs and wires or low fuel pressure or a vaccume leak

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Bucking and Jerking upon acceleration


Check the oil level, coolant level, transmission level. Check water pump, spark plugs,when did you buy the van check see if the car got accidents car fax.com. Also do you speed a lot excessive speed can age your vehicle very fast especially you travel thousand miles and if use it to go to work. Go back to the dealer so you can get write off on the job than file a suit if proof of neglect some dealers are lazy too check the problem there are good and bad mechanics so check Better Business Bureau and National Cars Association for good dealers and reputable private mechanics you may can sue, but you can a lot of money big dealer mechanic for your own protection.

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1998 Honda Civic EX AT. Okay, I just had the timing belt and another IACV replaced. Error code 14 (IACV) light is out, the SRS light is out, CEL is out. The car idles fine. The only problem I have now is...


Your excellent description provides a very short list of possible culprits, since your vehicle's symptoms all appear during periods of higher fuel demand.

(1) fuel filter - clogged - your description is absolutely classic (especially stumbling upon uphill acceleration) for a fuel filter in need of replacement.
(2) spark plug wire - one or more bad - an engine can muddle along while traveling over level terrain with one cylinder intermittently failing to fire, but try to go uphill (even the slightest grade), and the engine will skip badly and can even stall if asked to accelerate.
(3) in-tank fuel strainer - clogged - same symptoms as clogged fuel filter.

The fuel strainer is a sock-like pre-filter attached to the input side of the in-tank fuel pump.

The troubleshooting section of the 1998 Honda Civic EX manual states:

Priority Action Part Type Cause
1 Inspect Throttle Position Sensor - Faulty or Incorrectly Connected Throttle Position Sensor.
2 Inspect Mass Air Flow Sensor - Damaged, Loose, or Faulty Mass Air Flow Sensor or Circuit.
3 Inspect Choke - Stuck or Improperly Functioning Choke.
4 Inspect Air Cleaner Tempature Sensor - Damaged or Faulty Air Cleaner Tempature Sensor.
5 Inspect Fuel Filter - Clogged or Dirty Fuel Filter.
6 Inspect PCV Valve - Plugged or Damaged PCV Valve.
7 Inspect Carburetor - Worn, Faulty or Damaged Carburetor.
8 Inspect Fuel Injector - Dirty or Worn Fuel Injectors.
9 Inspect Hose (PCV) - Clogged or Collapsed PCV Hoses.
10 Inspect Fuel Pump - Faulty Fuel Pump.
11 Inspect Fuel Pump - Low Fuel Pressure.

Here's a YouTube video describing hoe to replace a fuel filter on a 2000 Honda Civic (the closest I could find for your 1998).

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2006 Dodge Caravan Sputtering. Code says EGR Valve. Would an EGR valve cause the van to sputter and run rough?


Absolutely. You'll know if your EGR valve is stuck or malfunctioning because your car will experience symptoms like rough idle and bucking on acceleration.

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Just bought it....seems to run fine, no over-heating or smoking, 232000 miles...paid 400 bucks...owner says it is a daily driver, even occacional long distance driver.......no problems....my test drive,...


Try changing the fuel filter. If it's been there awhile it's probably starting to clog and won't be able to flow enough fuel for the heavier demands the car has when going uphill or trying to accelerate hard.

Jun 23, 2010 | 1996 Subaru Legacy

1 Answer

Vehicle sputters, bucks, occasionally dies out, rich exhaust fume


The MAF sensor is the likely problem. Ca be clraned w/crc electrical cleaner only. Do not touch , rub,or use compressed air to clean or dry. It's located in the intake duct in one of the metal sections. The plug and wires will give it away. Good Luck-Ned-

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1995 buick park ave bucks/shakes


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