Question about 1991 Honda Accord

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Idles real rough worse with a/c on but runs down highway good idles like running on 2 cylinders whats up ???

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  • lunginhole Jul 01, 2009

    checked vaccum hoses no leaks check engine is NOT on

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Have you check for vaccum leaks? is the check engine light on?

Posted on Jun 26, 2009

  • andy_wachter Jul 13, 2009

    try spraying carb cleaner around the intake, you might have a leak there too.

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1 Answer

Rough idle, rough in drive


Is the check engine light on ?
Have you checked the computer for trouble codes ?
You could have one bad spark plug even with only 30k on it.
Problem could also be a dirty injector.

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Idle good when cold, hotter it gets the worst it idles especially when sitting at stop lights


simple test for a vacuum brake booster
star and run the engine at idle without applying the foot brake
if it gets worse when the foot brake is applied , it is a vacuum leak in the booster ( replace the booster )
otherwise check for failed vacuum hoses including under dash control lines , vacuum leak at the manifold or EGR unit

Apr 16, 2017 | Chevrolet Astro Cars & Trucks

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I have a 2002 super duty 7.3 powerstroke. running about 65 mile per hour down the highway and all of a sudden lost power and idles real rough ans has a code p1316 any ideal whats causing the problem


don't know codes but your description is what happened to my truck and it was the fuel pump in my front tank, I used the back tank for awhile.

Mar 05, 2011 | Ford F-250 Cars & Trucks

1 Answer

93' cavalier, very rough running. Missing badly at all speeds and loads, including at idle in park. changed plugs and no change in symptons. Is this an injected motor (4 cyl)?


Yes it is fuel injected. If it runs but has no power there is a good chance that an ignition coil went bad and there would be no spark to two cylinders. Cylinders 1 and 4 are partners on the same coil and 2 and 3 are partners. Usually these cars if an injector goes bad they have an external leak.
You can try to listen to them by holding a screw driver to each on while its running but I don't think
that will be your problem anyway.Another giveaway for the coil could be a gas smell like it is partially flooded. When you changed the plugs were any of them wet with fuel ? There is also a chance that if the engine works ok at highway speeds that the egr valve is stuck open. This causes
rough running at idle and bad hesitation until highway speed is achieved. Hope this helps or let me know and we'll figure it out.

Paul

Dec 28, 2010 | 1993 Chevrolet Cavalier

1 Answer

Have a 2002 Chevy Silverado 5.3 4wd. having engin hesitation problems.... service engine light came on...... Changed plugs (Autolite .040 gap) and wires. Problem continued, got worse Had auto parts...


Try swapping the injector on that cylinder with the one next to it and see if the misfire changes to the other cylinder.If it does then you have a plugged or bad injector.It it still stays on that same cylinder then check compression on the number 6 cylinder.Let me know what you find out.Good luck.

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1990 ford ranger 2.3L running rough at idle and while driving


Hi check all the fuse. fi the fuse are ok . remove the coil pack and reverce if the cly missifire change replace the coil if not chage replace the electronic comtrol module ok.

Apr 20, 2009 | 1990 Ford Ranger SuperCab

1 Answer

P0301 - Cylinder 1 Misfire Detected on a 1998 s-10 idles rough


Sounds like a bad fuel injector. Shop would need to run a contribution test to confirm. I must say, good detective work, good luck.

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1 Answer

Rough idel when cold start


if u have a damaged plug it can be running on 1 less cylinder ,it will idle very rough,change it!

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