It was running fine now it runs real rough it has a throttle body fuel injection
Check the map sensor vacuum hose first.
SOURCE: Hard start, rough idle, some black smoke, engine service light on
A scan for trouble codes may point you in the right direction quickly, rather than hit & miss, with replacing parts. Some of the autoparts stores will scan for free, and your right where you need to be to get the right part at the same time.
SOURCE: 1999 S10 Blazer 2WD 4.3L V6. Starts hard, idles rough.
you have a single injector under the intake plenum it has 6 branching fuel leads off of this.A very common problem is the regulator attached to this and it leak off fuel which falls into the intake .causing this problem. it needs to be replaced .i have done at least 80 of these in my career.this will fix your problem.thanks for choosing fix ya
SOURCE: 87 chevy 350 fuel injected pickup wont run smoothly
sounds like your egr valve is gummed up or bad. this is located behind the throttle body and has a single vaccum tube connected to it. if the diafram is still good you can remove it and clean it with WD 40 until the plunger works smooth
SOURCE: 350 Chevy A/C compressor bypass
i think they have an idler pulley to replace the ac, check it out at an autoparts store
SOURCE: 1990 chevy silverado 1500 single cab. 180K miles.
yes sounds like the fuel filter is clogged when push gas pedal put it in clear flood mood and resets the fuel system and starts over thats why it starts when push to floor creates back pressure sucks debri bottom of filter
Testimonial: "Thank you for you timely feedback. I will replace the fuel filter ASAP. "
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