88 Chevy pickup possible fuel problem? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

WestButteTruck · 01-19-2008, 01:47 PM

I bought this pickup as a project. It's an 88 3/4t chev 4x4 with a 350. Major problem was the tranny. That is fixed. Now I have another problem. The check engine light comes on and I get a code 44 for lean O2 sensor. It won't come on until I get on the highway up to speed. Cruising on flat ground, it seems to do fine. Start to pull a hill, and it powers out. Especially if it kicks down into 3rd. I thought it was going to quit on me at one point. But, when you top the hill easing into the gas, it will do fine again. Changed the fuel filter, that seemed to help, but no solve the problem, and I still have the light come on......Fuel Pump? Something else?

01-19-2008, 01:47 PM	#1
WestButteTruck Kung Fu Master Join Date: Oct 2005 Location: Montana Posts: 548	88 Chevy pickup possible fuel problem(update 01/28) I bought this pickup as a project. It's an 88 3/4t chev 4x4 with a 350. Major problem was the tranny. That is fixed. Now I have another problem. The check engine light comes on and I get a code 44 for lean O2 sensor. It won't come on until I get on the highway up to speed. Cruising on flat ground, it seems to do fine. Start to pull a hill, and it powers out. Especially if it kicks down into 3rd. I thought it was going to quit on me at one point. But, when you top the hill easing into the gas, it will do fine again. Changed the fuel filter, that seemed to help, but no solve the problem, and I still have the light come on......Fuel Pump? Something else? __________________ 72 GMC SuperCustom 4x4 1972 Chevrolet Cheyenne Super 4x4 Last edited by WestButteTruck; 01-31-2008 at 10:03 AM.



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