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04-24-2011, 11:07 AM | #1 | |
AF Newbie
Join Date: Apr 2011
Location: State College, Pennsylvania
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Losing power on hills
Hi, everyone. New here, so if this question has already been answered, I apologize.
I have a 93 s10 blazer, 4.3 litre 'W', 4 door, 4wd Automatic Transmission. Bought it early this year, and it had 146,000 on it, and I now have 153,000 on it. Runs and starts great, but loses power on hills at highway speeds. When you kick the gas a bit, it will downshift and chug up the hill at about 2500rpms. Seems to shift just fine any other time. No clunking or hard shifts. Have replaced cpi unit (but not nut kit), new cap, rotor, and plug wires and plugs, new tranny filter and fluid. Oil and filter changed every 3000 miles. Typical oil pressure around 50lbs or up. I am wondering if it could be vacuum issue, as I also hear a vacuum leak in my heater controls, or maybe the catalytic converter? Or is this normal?? No check engine light, no odd noises. 4wd works great, (encoder motor, all switches, actuator, and cable new) and it will climb hills all day in the woods and mud at slower speeds...just seems to be highway speeds that cause this. HELP! It's a great rig in great condition, and I want to keep it forever! |
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04-24-2011, 01:48 PM | #2 | |
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Re: Losing power on hills
could be the converter, hif the temp is rising than check it out
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04-24-2011, 02:10 PM | #3 | ||
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Re: Losing power on hills
Quote:
If lower you have restricted exhaust. Post back gauge readings.
__________________
Remember proper testing gives us the answer to many problems. MT |
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04-24-2011, 06:35 PM | #4 | ||
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Re: Losing power on hills
Quote:
And, I greatly appreciate the input! |
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04-24-2011, 07:03 PM | #5 | |
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Re: Losing power on hills
__________________
Remember proper testing gives us the answer to many problems. MT |
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04-24-2011, 07:57 PM | #6 |
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Re: Losing power on hills
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