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Mickey_D · 05-07-2008, 01:28 AM

Well, I pulled the #1 plug and it looked fine. So I stopped there. Went to go find the O2 sensor.

HAHAHAHAHAHAHAHAHAHA!!!

How in God's name are you supposed to get a wrench on that stupid thing with it between the body and the exhaust pipe?!?!?! Good Lord, it took me almost 10 minutes just to find it.

Oh, and which temperature sender actually goes to the fuel injection computer? The one in the left head, the right head, or the thermostat housing?

And what would cause a "W" Vortec 4.3 to surge at idle, lose all semblance of power once warm (power available is fine when it's cold), and varying power while cruising at 55-60mph? The cruising surge I think is abut the same as the one at idle, so I'm going to guess they are both the same. Oh, and it surges at idle the worst when it's cold, but does it also when it's warm. Just much more pronounced when cold. Almost to the point of stalling then it revs high, idles for a while, then rinse and repeat.

05-07-2008, 01:28 AM	#4
Mickey_D Dirteh Kitteh Join Date: Nov 2006 Location: Mormon country Posts: 2,484	Re: S-10 Blazer woes. Well, I pulled the #1 plug and it looked fine. So I stopped there. Went to go find the O2 sensor. HAHAHAHAHAHAHAHAHAHA!!! How in God's name are you supposed to get a wrench on that stupid thing with it between the body and the exhaust pipe?!?!?! Good Lord, it took me almost 10 minutes just to find it. Oh, and which temperature sender actually goes to the fuel injection computer? The one in the left head, the right head, or the thermostat housing? And what would cause a "W" Vortec 4.3 to surge at idle, lose all semblance of power once warm (power available is fine when it's cold), and varying power while cruising at 55-60mph? The cruising surge I think is abut the same as the one at idle, so I'm going to guess they are both the same. Oh, and it surges at idle the worst when it's cold, but does it also when it's warm. Just much more pronounced when cold. Almost to the point of stalling then it revs high, idles for a while, then rinse and repeat. __________________ Darrin 1955 Willys CJ-5 all original and the oldest CJ-5 on the road. 2001 Dodge Neon (wife's car) 1995 Jeep Grand Cherokee Limited Edition SOLD 1981 K15 Custom Deluxe 4X4, rusty but trusty wood hauler. SOLD 1993 S-10 4X4 Tahoe SOLD Sign up with the Contact List RIP ESLL Last edited by Mickey_D; 05-07-2008 at 01:29 AM.