More Silverado Troubles..

OUMike · March 25, 2005

The Patient:

1994 Silverado

4.3L V6

184,700 miles

The Symptoms:

During accleration (and sometimes while crusing) I get a vibration...like I'm running out of gas, or like its missing or something. Idle is normal and sounds smooth.

Cat and muffler are brand new, so I know theres no obstructions.

Vaccuum? Spark? EGR?

What exactly does EGR do anyhow?

Thanks everyone

Truckman031 · March 25, 2005

Maybe injectors or spark plugs?

elvisdog · March 25, 2005

You might have the dealer check the fuel pump...sounds like what my '98 S-10 did...a new pump cured it....but wounded my wallet to the tune of $750.

OUMike · March 25, 2005

Maybe injectors or spark plugs?

<{POST_SNAPBACK}>

Yea...I was thinking something like plugs, but I wasn't sure if those symptoms were synonamous with spark.

You might have the dealer check the fuel pump...sounds like what my '98 S-10 did...a new pump cured it....but wounded my wallet to the tune of $750.

Actually my fuel pump is brand new. I wouldn't think i'd be having problems with it already, but the gas gauge is acting wierd.

71GMC_3/4T · March 25, 2005

If the gauge is acting weird, I'd be checking the ground at the fuel tank. A bad ground would cause your pump to not work to it's full potential, and would also cause the gauge to go wacky. Since you just changed it, maybe something loosened up.