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Old 12-29-2007, 03:41 PM
 
62 posts, read 299,300 times
Reputation: 40

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Hi all, my 2000 Honda accord is idling at around 500-600 rpm when its warmed up and recently there has been a few times when ive been at a stop and it starts shaking and feels like its about to die out. When its doing this my tach drops down to almost zero. I called honda and was about to bring it into service but the mechanic on the phone told me i might have gotten a bad batch of gas and to try putting some fuel additive in there. But this has happened a few times already with new gas. I dont know much about cars, if anyone can answer this question it would be helpful. Thank you.
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Old 12-29-2007, 03:44 PM
 
Location: in drifts of snow wherever you go
2,522 posts, read 463,958 times
Reputation: 692
bad batch of gas? I think you need a new mechanic.
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Old 12-29-2007, 03:48 PM
miu
 
Location: MA/NH
13,033 posts, read 22,430,472 times
Reputation: 10236
How handy are you? Maybe your IACV (idle air control valve) is dirty and needs be taken out and cleaned.
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Old 12-29-2007, 04:15 PM
 
62 posts, read 299,300 times
Reputation: 40
how do i do this? im no mechanic but ill give it a try.
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Old 12-29-2007, 09:39 PM
miu
 
Location: MA/NH
13,033 posts, read 22,430,472 times
Reputation: 10236
Follow the instructions on this page:
DIY cleaning your IACV
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Old 12-29-2007, 10:24 PM
 
Location: Blankity-blank!
11,441 posts, read 9,210,941 times
Reputation: 6695
Usually it's best to check out the simplest solutions first.
Never underestimate the power of dirt. It's the number 1 cause of problems.
The problem could also be cracked (and leaking vaccum hoses). If old the hoses become dry and crack, not easy to see unless you bend the hose a bit. The cracks are almost microscopic. Auto parts stores sell the hoses by the foot for about 90 per foot. Replacing several is always a good idea. Most imports require about 20-25 feet.
It just might be loose wires. Check various connections.
Possibly air filter element or fuel filter. An air filter bought at any auto parts stores is easy to change. Some fuel filters (costing about $10) are easy to do as well, if they are visible.
If you're motor is dirty and greasy, take it to a self-service car wash. Spray a bit of Gunk Engine Degreaser(available at auto parts stores for about $3/can) on the motor. Leave the motor running as you gently use the pressure spray to wash off all dirt and grease. If, while you're using the pressure spray, the motor starts to idle rough, stop immediately. Remember the area you just sprayed - it may be the problem area.
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Old 12-29-2007, 10:26 PM
 
Location: Vermont / NEK
5,366 posts, read 8,753,164 times
Reputation: 6456
That seems like solid advice - especially if the car runs ok at higher rpms - like when you're going down the road. / good luck!
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Old 12-30-2007, 05:25 AM
 
Location: McKeesport, PA
2,306 posts, read 4,753,629 times
Reputation: 1298
Check your fluid levels (antifreeze and oil). I had a Ford Probe that used to run fine when it was first started. But after the engine "warmed up", it would start to idle low and act like it was going to cut off. I would aid anti-freeze and "ta-da"....problem was gone. Oh, and it didn't have to be crazy low either...I think some sort of sensor was overly-sensitive.
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Old 12-30-2007, 09:31 AM
 
Location: California
9,677 posts, read 10,941,681 times
Reputation: 10854
Is there a check engine light on? It could be a number of things, take it to a shop and have it checked. It could be a bad sensor or dirty injectors, check your air filter it may need replaced, replace it, add a couple jugs of injector cleaner and take it for a long drive but if you have a check engine light it's best to take it in for a check up.
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Old 12-31-2007, 10:55 AM
 
62 posts, read 299,300 times
Reputation: 40
thanks my coolant level is low in the resevoir tank. do you think this is the problem. also does it matter if i add coolant which is not from Honda.
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