rough idle

Asked by Aug 24, 2014 at 02:41 PM about the 2001 Chevrolet S-10 LS LB RWD

Question type: Maintenance & Repair

I have a 2001 chevy S10 that on initial startup after sitting overnight it runs rough and the engine vibrates! after driving a few miles the symptoms disappear and it runs fine.
I suspect that it is a problem with coil packs or the spark plug wires getting moisture in them and dissipating when warmed up!

4 Answers

145

Trying to remember, does your S-10 a regular carburetor or throttle body fuel injection, if it has the latter, it should have a water temperature sending unit, some where on the top front of the motor, in the water manifold, it should have a plastic snap on cap with, if I remember wright it should have two wires coming out of it, it controls the fuel / air mixture, while the engine is cold, this sending unite might have gone bad, unplug it with a cold engine, while it is running, check to if there is any difference in the way the engine runs & try it again after the engine warms up, if there is no difference ether way I would say the send unit is bad. if sound like it might be something you don't wont to try to do, take your pick to a local auto part store, to see if they can test is, usually this is done for free, Thank you

1 people found this helpful.
2,005

2001 has OBD-2 system if your idle is rough ,is the check engine light "ON" if so have the codes read at the parts store. This will narrow the cause. FYI the computer in the truck doesn't control emissions until the water temp gets to 180 F . Also if the spark plugs or wires are the cause a random misfire code will be stored in the memory.

2 people found this helpful.

I had the same problem with my 91 S10 Blazer. After replacing several parts the engine stopped shaking like that after we put new O rings on the injector heads. I recommend getting a throttle body repair kit which includes all the gaskets and O rings.

145

All ready replaced throttle body & updated injectors, Co sensors, 2 vacuum lines on engine, and fuel pump & filter, and fuel & vacuum lines to rear of Blazer, and clean Ox Sensor, all no help

Your Answer:

S-10

Looking for a Used S-10 in your area?

CarGurus has 886 nationwide S-10 listings starting at $1,999.

ZIP:

Chevrolet S-10 Experts

  • #1
    Andrew Olsen
    Reputation
    2,830
  • #2
    Trebor66
    Reputation
    1,130
  • #3
    John Saffrahn
    Reputation
    1,120
View All

Related Models For Sale

Used Ford Ranger
110 Great Deals out of 4,268 listings starting at $1,000
Used Chevrolet Silverado 1500
1,860 Great Deals out of 158,323 listings starting at $1,000
Used Toyota Tacoma
465 Great Deals out of 49,935 listings starting at $2,695
Used GMC Sonoma
3 Great Deals out of 274 listings starting at $2,150
Used Ford F-150
2,357 Great Deals out of 199,530 listings starting at $1,300
Used Chevrolet Blazer
732 listings starting at $900
Used Dodge Dakota
84 Great Deals out of 3,038 listings starting at $1,982
Used Nissan Frontier
326 Great Deals out of 22,061 listings starting at $1,295
Used GMC Sierra 1500
809 Great Deals out of 60,637 listings starting at $1,495
Used Dodge Ram 1500
341 Great Deals out of 9,293 listings starting at $1,800
Used Chevrolet Camaro
269 Great Deals out of 27,309 listings starting at $2,900

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.