94 Sierra Idles rough

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Apr 25, 2007 | 03:48 PM

#11

shooked

Joined: Jun 2006

Posts: 7

RE: 94 Sierra Idles rough

It is the sensor directly out front on the intake manifold. It is the coolant temperature sensor.

Apr 25, 2007 | 05:10 PM

#12

Jswerve

Thread Starter

Joined: Jan 2007

Posts: 14

RE: 94 Sierra Idles rough

Quote:

ORIGINAL: shooked

It is the sensor directly out front on the intake manifold. It is the coolant temperature sensor.

Hmmm...I do not have any codes or a check engine light though.

Apr 25, 2007 | 06:23 PM

#13

Argon

Senior Member

Joined: Feb 2007

Posts: 2,167

From:

RE: 94 Sierra Idles rough

a bad coolant sensor will dump fuel...not really "miss"

Apr 25, 2007 | 08:02 PM

#14

Jswerve

Thread Starter

Joined: Jan 2007

Posts: 14

RE: 94 Sierra Idles rough

Quote:

ORIGINAL: Argon

a bad coolant sensor will dump fuel...not really "miss"

Kinda where I was headed...thanks.

Apr 26, 2007 | 05:49 PM

#15

shooked

Joined: Jun 2006

Posts: 7

RE: 94 Sierra Idles rough

Thats right too, it would dump fuel, mine would leave me set until it cooled off a bit. And also, correct it did give me code, check engine light came on for a second, and then off, did not stay on, only when it missed and carried on. You have no engine code? If the light even blinked on and off it will leave a code.

Apr 26, 2007 | 07:09 PM

#16

Jswerve

Thread Starter

Joined: Jan 2007

Posts: 14

RE: 94 Sierra Idles rough

Quote:

ORIGINAL: shooked

Thats right too, it would dump fuel, mine would leave me set until it cooled off a bit. And also, correct it did give me code, check engine light came on for a second, and then off, did not stay on, only when it missed and carried on. You have no engine code? If the light even blinked on and off it will leave a code.

No code, no light flashing. Just an occasional drop in idle when in gear waiting at a stoplight.