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Please Help Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Truck Repair>> Truck Repair Advice Mikee Anonymous Poster mkje@verizon.net Jun 22, 2009, 11:47 PM Post #1 of 4 (2134 views) Please Help Sign In I have a 1988 GMC C-1500 2wd with a 4.3L TBI. I had a re-manufactured engine installed about 4 years ago from Advance Automotive Ind. It now has approx. 35,000 miles on it. Fuel pressure is steady at 12psi. The problem started when used to drive it all the time it seamed as though it was loosing power. Now that it has sat for a year it idles fine and runs normally until you put it in drive the truck does not go more than 10 mph and it sound like its sucking in allot of air. A very loud sucking sound. All vacuum lines seem to be fine. Where should I go from here? Hammer Time Ultimate Carjunky / Moderator Jun 23, 2009, 12:16 AM Post #2 of 4 (2131 views) Re: Please Help Sign In It sounds like you may have a plugged up Catalytic Converter. The easiest way to determine that is to just disconnect it from the manifold and run it temporarily and see if the power comes back. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional. Mikee Anonymous Poster mkje@verizon.net Jun 23, 2009, 9:35 PM Post #3 of 4 (2124 views) Re: Please Help Sign In I replaced that aprox 2 years ago so I never though but sure enough when I took it off it was a mess and the power is back. Thank you very much. Hammer Time Ultimate Carjunky / Moderator Jun 23, 2009, 9:39 PM Post #4 of 4 (2121 views) Re: Please Help Sign In Glad I could help ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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