I have a 98 chevy s-10 pickup and sometimes when I'm at a stop sign or a red light it shudders. Not the entire time I'm stopped though. It does this about once or twice a day, that I notice. Sometimes it's worse then others, but I haven't been able to notice a pattern yet. Any suggestions?
Is your check engine light on?
SOURCE: 1995 Chev S10 4.3L V6 rough idle and under power
This make/model has a chronic problem with EGR clogging. If you have a dashboard indicator showing "check engine" most likely it is a trouble code indicating and EGR (exhaust gas recirculator) valve problem. Symptoms are rough idle, and surging and stalls.
What happens is sediments from the exaust manifold get sucked up into the valve when it opens, then stick in the valve and keep it from closing. When the valve is open when it should be closed, the engine runs very rough.
I removed my egr and then dislodged the sediment (pea-sized debris) and then re-installed the valve. Three days later, the same "check engine" and same rough idle. I must have did this at least three or four more times.
What I found that gave me a permanent solution was an aftermarket filter gasket that keeps debris from clogging. I don't remember the name of the product, but a search for "EGR filter gasket" may lead you to the product.
Install the gasket between the EGR and the exhaust manifold and you should be good to go. Note: on 1995 and newer models, disconnecting the EGR from the wiring harness (common on R&R) may require the computer to be reprogramed.
SOURCE: 2002 chevy trailblazer has rough idle
it could be an o2 sensor. it could also just need a tune up
you can go to your local library and find a repair manual
SOURCE: 98 Chevy pickup brake lights just stopped working
have you tried to find the brake pedal switch? follow the brake pedal under the dash and there should be a switch that the brake pedal presses to activate the lights when you push it in . if everything else has been checked then I suspect that the switch has moved enough to not work or it may be just bad. let me know if this was it.... hope this works
SOURCE: Rough idle
I had the same exact problem on my 2004 Colorado (3.5L). Cleaned the MAF sensor (with MAF sensor cleaner) and throttle body/plate - cleared it right up.
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I forgot to add that it has yet to stall and the check engine light hasn't come on either
No sorry I forgot to add that the check engine light isn't on
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