Question about Cars & Trucks
Inline or in tank fuel filter (replace).. fuel pump or injector worn out..
need tuneup (plugs) rough engine.. not firing on all cylindars.
exhaust clogged up can do same thing.. go have catalytic converter checked (they drill tiny hole and pressure test it) .. if bad replace.. replace muffler if need.. a bad converter will not allow whole system to breath and you lose power and get same exact symptoms. you can hook it up to a diagnostic machine at autozones for free.. they plug a computer into your car under dash and it runs all the CODES for things not running right.. codes stored in your cars computer for future repair needs.. when car runs bad like it is for you.. it generates codes for things to CHECK and look for to maybe replace. You will get all the things plus a few little sensors that are cheap and easy to replace too.. start with autozone and computer codes.. they will go in store and print little papers for you..then start on cheapest suggestions.. little sensors and slap some plugs into it.. you tube how to if you dont know and find step by step videos for your make model car.. you will have to go to a shop to get a new converter welded on and it is a little high priced.. but you HAVE to have it.. if its broken.. you have to replace it. Dont let people tell you to cut it out and just put straight pipe as it will affect other things running adversly and cause you more problems.. the cars are set up to run WITH them on. I have had this problem and it was my converter.. but it needed new plugs and I gave it a sensor by the fuel injector.. it runs excellent now.. good luck! I dont know where you are.. but if there is a garage that can run the codes for you ... thats where to start.
Posted on Jul 31, 2013
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Posted on Jan 02, 2017
check everything you can under the hood your air intake system all of it especially make sure all clamps are tight .. and make sure all vacuum hoses are good and not cracking or broken or just loose . you might run a little fuel cleaner through a tank of gas too cleaning the engine fuel system up some. just a few ideas.. Jerry
Posted on Apr 12, 2009
SOURCE: running rough
If your car is running rough and it's fuel injected (which yours is). Follow the air intake (black plastic box - housing the air filter that has tubing that goes to the motor) until it reaches the Throttle body (rounded metal air intake at the end of the plastic tube - has one large flap inside). You will want to remove the hose clamp and thoroughly clean the throttle body and the AIC (air idle control valve - small canister attached to the throttle body). Use off-the-shelf cleaner from any automotive store. This takes about 30mins to 1hr depending on your skill level. This will result in a cleaner smother idle and smoother performance. This is a common issue in today's cars. I have to do this once a yr to keep my modified car running happy.
Take a look at the later parts of this article for pictures to give you an idea:
Posted on Aug 07, 2009
Check your TPS Throttle positioning sensor. Sounds like it has a dead spot in it or it is failing. May also be a wiring harness issue or loose connection at TPS too! If its intermittent then it will soon go out completely. It should be located on your fuel pedal. Remove it and check it with an ohm meter. Check resistance all the way thru from 0-100 percent. When it is not working it should do nothing and show no resistance. When it is working the resistance value will increase and or decrease as you turn the sensor.
Posted on Feb 22, 2010
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