Rough idle in "D" gears
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have u changed your pcv valve and oxygen sensor? if it does this all of the time change the pcv valve. i didnt realize when the dealer tuned up my car over the yrs that they never changed that part. i have a 92 4 dr lx and changed the original one last yr. im surprised i didnt blow some oil seals.
if it happens after the car warms up then its probably the 02 sensor. it cycles in an open default mode. this part can last several yrs in hondas. well over 100,000 miles. they get lazy at about 80,000mi. hondas have large ones compared to american made 02 sensors. a bit of a pain to remove too if its the original. im not familiar with a 93 se u may have 2 02 sensors. one on the exhaust manifold and the other farther down in the exhaust.
also does your tach jump. it could be the distributor, coil or ignitor.
if it happens after the car warms up then its probably the 02 sensor. it cycles in an open default mode. this part can last several yrs in hondas. well over 100,000 miles. they get lazy at about 80,000mi. hondas have large ones compared to american made 02 sensors. a bit of a pain to remove too if its the original. im not familiar with a 93 se u may have 2 02 sensors. one on the exhaust manifold and the other farther down in the exhaust.
also does your tach jump. it could be the distributor, coil or ignitor.
No I haven't replace my pcv valve nor the oxygen sensor yet. By the way, whats the pcv valve and where is it located? About the O2 sensor, I think I might have two but I'll check tomorow and let you know about it. Oh yea, my car only does this when it's warm up, not when it's cold. What do you mean by "does my tach jump?"
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It could be a vacuum leak. If you spray small amounts of starter fluid at certain spots and the engine speeds up, you have found the leak.
Check out the idle air valve.
Or it could be the throttle valve sensor sending faulty messages.
Your EGR system could be obstructed. Unplug it and see if the engine improves.
A faulty MAP sensor can have the same consequences.
Bad plugs, wires, cap, and rotor?
Plugged injectors can really cause problems. You can buy reconditioned ones for 1/4 the cost of new ones.
ETC., etc.
I have been going through the same sh** myself.
Check out the idle air valve.
Or it could be the throttle valve sensor sending faulty messages.
Your EGR system could be obstructed. Unplug it and see if the engine improves.
A faulty MAP sensor can have the same consequences.
Bad plugs, wires, cap, and rotor?
Plugged injectors can really cause problems. You can buy reconditioned ones for 1/4 the cost of new ones.
ETC., etc.
I have been going through the same sh** myself.
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From: SW Florida
Spray the starting fluid around the intake manifold, especially by the air plenum and its valves. Best to do it when the car is COLD. 
It could be the "D" sensor for the automatic tranny as well.
Do you have a Haynes manual? You could buy one cheap on eBay. That would show you the location of the EGR valve also. Good luck.
It could be the "D" sensor for the automatic tranny as well.Do you have a Haynes manual? You could buy one cheap on eBay. That would show you the location of the EGR valve also. Good luck.
Last edited by gulfview; Nov 30, 2006 at 05:33 AM.
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From: Washington State
http://www.mycb7.com/T2T013.pdf
That is a link to how to clean out your EGR, it will walk you through the steps. I wouldn't suggest doing this unless you know what you could get yourself into.
That is a link to how to clean out your EGR, it will walk you through the steps. I wouldn't suggest doing this unless you know what you could get yourself into.
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The EGR valve is located on top of the intake manifold. This valve most likely will have a sensor on it. If you have determined it's the EGR valve you must also replace its sensor. A service manual for your particular car is a must. In there you can find topics on different problems of your car and answers to those problems. You could purchase a Haynes or a Helm, Inc. service manual for your Honda vehicle. With regard to rough idling in "D" when hot try clearing the computer according to specifications by pulling out the fuse(s) for the computer. In fact everytime you replace an emission control sensor or device the computer must be cleared. First locate where the fuse box is. It is either in the engine compartment or in the driver's side above the left foot in the passengers' compartment. Another alternative is disconnecting the negative battery cable from the battery. After clearing the computer road-test the vehicle by driving slowly at part throttle until the original performance returns.
Last edited by onthekeyboard; Dec 1, 2006 at 03:41 PM. Reason: More information was entered.
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gulfview,
Where can I get some Starting Fluid and what kind? Also do you know what kind of Carb Spray can I get to clean my IACV?
mycb7com,
Thanks for the info, but after reading the article, I don't think it would be my EGR since it have to do with acceleration. I hope.
Well, I'll try cleaning my IACV after someone could give me some info of what kind to get...
Where can I get some Starting Fluid and what kind? Also do you know what kind of Carb Spray can I get to clean my IACV?
mycb7com,
Thanks for the info, but after reading the article, I don't think it would be my EGR since it have to do with acceleration. I hope.
Well, I'll try cleaning my IACV after someone could give me some info of what kind to get...