Recent content by tinse4

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    89 r3500 building heat

    So a late update. The temps are back up in Az. The truck runs great and cool while in motion regardless the speed, ac on or not. Now it is getting hot while sitting in traffic with the ac on. This is the complete opposite of what it was doing. So what I have done since the last post: ac...
  2. T

    Parts...Parts...Parts...

    I just ordered a different style electric fan to see if it will do the job. If not I will take you up on the fan shroud. Thanks
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    89 r3500 building heat

    That is my understanding also. I guess we will see. It will be put on hold a week or two now. I just had a job come in that will tie up some funds. When it all wraps up I will tackle the exhaust. I will order the fan today, and see how that turns out first.
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    89 r3500 building heat

    I am not 100% I am sure someone can speak more intelligent than I about it. One the AIR is mounted to the top of the manifolds on each side. My O2 sensor in just after the manifold in the driver side exhaust pipe. The pump is engine driven. I understood it was to add air into the exhaust to...
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    89 r3500 building heat

    The truck is an 89 R3500 with TBI 454. It has an O2 sensor. That's why I'm concerned. If it were carburetor I would just adjust the carb to make up air fuel ratio.
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    89 r3500 building heat

    I have a internet search for a shroud out now. So for nothing. As far as inspections I don't have an under the hood inspection due to year and weight. I do have a under side visual and exhaust gas test. I am more worried about the output without the A.I.R. My understanding is it pumps air into...
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    89 r3500 building heat

    Ok so I think I have the building heat fixed. I removed the electric fan assembly that P.O installed and went back to fan clutch. I figure go back to stock and work back. It was like a whole new truck. I don't know what the amp draw of the fans was, but even with my 140 amp alt they were killing...
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    Parts...Parts...Parts...

    I'm in need of a fan shroud. Truck had electric fans that were killing the system. Took them of and bought a clutch and fan but cant find a shroud to fit my radiator. Needs to be 34"x19".
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    89 r3500 building heat

    So some more test driving. On the freeway for 20 mins with the ac off it runs right at 210. Run with the ac on it goes to 230 -240. With he egr unhooked the truck runs like a different truck, more power, quicker response. Also the heating on the freeway slows. Isn't the egr supposed to cool the...
  10. T

    89 r3500 building heat

    Ok so after some more playing. I removed the cat. I dont need tags for another year so am not worried. It helped power, but not the heat. Last night I drove to my moms house to pick my girls up. Its an hr drive one way half freeway, and half in town. Here is what I found. With the ac on the...
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    89 r3500 building heat

    So Sunday I pulled the stat. I figure that way I can rule out the stat. I live in Tucson so it was a chilly 95 with humidity from monsoons. Drove the truck around town with the ac off to see what the engine is really doing. The temp never even hit 210 while in traffic at almost 100 degrees. So I...
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    89 r3500 building heat

    OK I am new to posting here, but am at a loss. I have an 89 Chevy r3500. I know its past the age, but for all purpose the same truck. Specs: 454 tbi th400 trans 411 gears. The issue I am running into is it keeps building heat in the engine. It has dual electric fans that seem to be operating...
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