Question about 1993 Honda Accord

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My 1993 Honda Accord Idles up and down in Park and neutral. I changed the idle sensor on it. What else could it be???

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An intake gasket vacuum leak can cause this also. Sometimes you can isolate the problem by spraying carburetor cleaner at the head/intake mating surface while the engine is running. The fluid will cause a momentary stable idle when you find the right spot by plugging the leak. Could be a leaking vacuum hose too.

Posted on Dec 31, 2010

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1 Answer

What is the map sensor code for a 1992 honda accord


1. yes a 1992 Honda accord has a map sensor and what accord do you have engine wise ?? because theres different codes 2. it could be a idle air control valve because if they get dirty they can cause the car to rev high low or even stall and cause the car to run crappy.

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In park or neutral, engine idles up to about 3000 rpm then back down. It is a continious up & down.


Sounds like the idle air control valve is bad or not filling up properly with coolant. If you just did a coolant change, there might be air in the system.

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Honda Accord 1993 EX is stuck on Park. It doesn't budge if I start the car and it doesn't budge if i try to shift to N,P,D4,D3


Use your ignition key and stick it straight down into the slot marked shift lock, next to the shifter. That will allow you to shift it into neutral. Leave it there, remove the key from that slot and start the car. You will then be able to shift into drive, from neutral, and be on your way.

Jun 26, 2011 | 1993 Honda Accord

1 Answer

I have a 1993 Honda Accord LX which idles with a "surge" while the car is in park...the "surge" goes away when you put it into gear. Any ideas?


On the throttle body, that's the part where the throttle cable goes on, will be a screw. might have a plastic cap covering it, remove cap, and with screw driver turn screw in there to where it will idle where you want it, that the idle mixture screw.

Aug 26, 2010 | 1993 Honda Accord

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I Have a 1993 honda accord ex.Just Changed the valve cover gasket! Checked the plug wires recently and the had oil all over them.What is the Problem?


When you changed the valve cover gasket, did you also change the seals that go around the spark plug holes? If you did,and theres still oil getting in there, they might have moved when you installed them. If thats the case, hold the seals in place with some RTV black sealant and try it again.

Jun 25, 2009 | 1993 Honda Accord

1 Answer

Idles up and down after warm up


THE COOLANT LEVEL IS LOW

on the older hondas even the newer ones idle speed is coolant temp controlled.

when the engine idles up the electronic coolant temp sensor is submerged in coolant and reads warm, so the engine computer idles the car down. the coolant level if low than drops from around the coolant temp sensor and it says the engine is cold, so the engine computer idles the car up.

which results in the constant rise and fall in engine rpm.

ADD COOLANT TO THE RADIATOR AND WATCH THE CAR MAGICALLY FIX ITSELF.

Apr 10, 2009 | 1993 Honda Accord

1 Answer

Idles up and down after warm, but goes away in reverse and drive. 1993 honda accord


I had the same problem with my honda. On the throttle body there is a screw that controls idle speed. If your idle speed is around 800-1000 rpm in neutral, tighten the screw a quarter turn each try until the idle speed is around 1500 RPM. Did this stop the idle?

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