jrock782003
New Member
Posts: 4
Registered:
9/30/09
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From: FL
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9/30 7:17p
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i havea 92 ck 1500 with 213977miles on it. i just bought it a few months and had to replace it with a new muffler. i put on a afterburner 3in 3out high flow. the cat was taken out previously. i really didnt notice it much at the time but when i run at idle speed, it surges back n forth and the engine sounds like its loaping. i had the timing checked and it was right. do i have to change the o2 sensor?
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Xcutioner
S-10 Member
Posts: 198
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12/6/08
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From: KY
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10/1 3:12p
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what do you mean by surges back and forth
with the afterburner muffler and no cat you will have a more noticable lope in the sound at idle
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northernchevyman
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Posts: 192
Registered:
8/18/09
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From: BC
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10/1 3:57p
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i had a surging problem and it ended up being the bearing in the A/C compressor
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jrock782003
New Member
Posts: 4
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9/30/09
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From: FL
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10/2 8:28a
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what i meant from surges was that when i get up to speed limit and back of the gas to cruise it starts it surging the rpm raises and drops for a crappy ride. so i have to constantly play with the gas peddle.
the ac thing might be the prob cause it leaks oil out the compressor. i spent $99.95 at a free ac check to have it filled with dye. when i went back they told me what was up $600 to replace it. i really dont care for the ac ne ways. what did you do to fix your prob northern? do u think it could be the o2 sensor or a code?
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sledgehammer 
SS Member
Posts: 2,072
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4/19/06
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From: VD
Truck: 1995 Suburban
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10/2 8:57a
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you can throw out the whole ac compressor and put in a pully so there is just that in its place. you just wont have AC anymore.
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Interceptor1992
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10/31/09
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From: AZ
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11/3 6:46p
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OK if you have the A/C on when your driveing and your engine surgges and then backs off then surges agian every 10 to 30 sec means your low on freon and the A/C compressor is cycling on and off to tell you your low
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GreenGhost
Silverado Member
Posts: 384
Registered:
4/9/06
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From: TX
Truck: 2004 Silverado
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11/3 10:17p
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TPS or IAC sensors
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northernchevyman
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Posts: 192
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8/18/09
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From: BC
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11/3 10:27p
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could be the sensors to. wat i did was unplug it and the clutch doesnt engage so it more or less turns into a free spinning pulley and stopped the surging. the plug is just on top of the compressor. i chose to do this because i didnt want to pay the cost of revamping my system to R-134 from R-12
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northernchevyman
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Posts: 192
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8/18/09
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From: BC
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11/3 10:31p
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it deffinatly wont be the O2 sensor cause even if the are unplugged or filled with junk they will go into closed loop with a preset fuel air mixture and you r engine will run a little junky but nothin serious like the surgin your talkin about. O2 sensor could throw a code though if not workin
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