my car has been having this weird problem since i got it. i jerks alot when its in lower gears/ lower rpms. and sometimes when im at a stop light the idle goes down what looks like low to me.(im new to accords and new to manuels.) i think it goes between 500-700 then back to 1000 but sometimes it goes down almost all the way to the end of the tach.

 

oh its a 1990 accord lx i think the f22a1 and its a fivespeed.

 

your clucth might be sliping and when your sitting still it might not be disengaging all the way and pulling the motor down

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by casper.hughes &raquo;</TD></TR><TR><TD CLASS="quote">your clucth might be sliping and when your sitting still it might not be disengaging all the way and pulling the motor down
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even when its in nutral?

 

is there any codes stored
that eliminates the clucth could be the throttle position sensor

 

it has a cel but the guy i bought it from said it was for the vss. and i dont know how to check codes on an older car like this.

 

look under the dash and there is a two pin connector pull it out of the black box under the passenger side dash and bridge it over and turn the key on and the cel will blink but the vss could be what is wrong with it bc that has a little to do with how much fuel to give it

 

how would i know what the cel was for?

 

this is the code list

ECU Diagnostic Trouble Codes (Generic) retrieve the code

1 O2A - Oxygen sensor #1
2 O2B - Oxygen sensor #2
3 MAP - manifold absolute pressure sensor
4 CKP - crank position sensor
5 MAP - manifold absolute pressure sensor
6 ECT - water temperature sensor
7 TPS - throttle position sensor
8 TDC - top dead centre sensor
9 CYP - cylinder sensor
10 IAT - intake air temperature sensor
12 EGR - exhaust gas recirculation lift valve
13 BARO - atmospheric pressure sensor
14 IAC (EACV) - idle air control valve
15 Ignition output signal
16 Fuel injectors, (Main Relay) - noted by Techauto
17 VSS - speed sensor
19 Automatic transmission lockup control valve
20 Electrical load detector
21 VTEC spool solenoid valve
22 VTEC pressure valve
23 Knock sensor
30 Automatic transmission A signal
31 Automatic transmission B signal
36 traction control found on JDM ecu's
41 Primary oxygen sensor heater
43 Fuel supply system
45 Fuel system too rich or lean
48 LAF - lean air fuel sensor
54 CKF - crank fluctuation sensor
58 TDC sensor #2
61 Primary oxygen sensor
63 Secondary oxygen sensor
65 Secondary oxygen sensor heater
71 random misfire cylinder 1
72 random misfire cylinder 2
73 random misfire cylinder 3
74 random misfire cylinder 4
80 Exhaust Gas Recirculation insufficient flow detected
86 ECT Sensor (Engine Coolant Temperature) circuit range / performance problem
90 Evaporative Emission Control System leak detected in the fuel tank area
91 Fuel Tank Pressure Sensor low input
92 Evaporative Emission Control System insufficient purge flow

 

but how do i know what number it is?

 

also could it have something to do with the negative on the battery terminal coming off?

 

no the altinater will take care of it and when you turn the key on the cel will blink

 

i noticed today that its really sluggish and jerky (like someone is pushing the gas pedal and letting go and pushing and letting go) up untill 3k then it accelerates normaly

 

WOW this sounds exactly like the problem i have, I have a 1994 accord ex. I have been trying to figure this out for over 2 years. guys from honda cant figure it out either. we have replaced pretty much every ignition peace there is because thats what it seems the problem it. we have check every sensor too and they all seem to be fine. I when it sputters at idle it is a rich miss fire. My car will sputter at idle every so often and it will do it if i hold the car at 2200-2800 RPM. It will not sputter or anything if im flooring it or anything. just when held at certain RPM. Cyl #1 spark plug was gettin alot of build up on it and it seemed as tho it was the head gasket going out. so changed head gasket and timing belt and all that stuff. and it still has the same problem. but i think that did fix my problem with the spark plug. The only thing left to do to my car that might fix it is the ECU. I got one off ebay and it is suppose to be here sometime this coming week. if it works i will let you know. Have you tired doing anything to figure out what your problem is?

 

OH one thing i forgot. I have had my car on a scanner and noticed that while car is running, when it should be in closed loop. It will switch from closed to open loop when reving up the car or while driving it will go crazy switching in and out of closed loop. this is why i think the ECU could be bad

 

i didnt think about the spark plugs i should try that. i noticed tho when i turn my ac of my car doesnt idle as bad. i think it has something to do with the car not getting enough fuel or something.

 

or it could be that the car is gettin too much fuel. I had a bad exhaust leak before mt O2 sensor and it was makings my O2 real that i was running lean all the time dumping more fuel in adn causeing a miss fire. but i was only able to notice it at a idle. it was sputter and about die every 2 min or so. and i fixed that and now im just back to my other problem. check to see if you have a exhaust leak. and check to see if your O2S is switching properly

 

yeah idk it could be a hundred different things i just hope i can fix it. it gets really annoying

 

also i forgot to mention i noticed today that if i turn the ac off my idle stays fairly normal but if i turn it on it starts dropping really low.

 

it will the ac clutch pulls the motor down

 

yeah turning your ac on will drop your rpm a lil. its normal. and yes the sputtering problems suck! i have been tryin to figure mine out for two years! i wanna just swap the motor and be done with it

 

i know it happands with ac but with this car it brings my rpms almost all the way down, and it goes up and down up and down

 

oka, so i got my ecu. it fixed mt problem. maybe thats what is wrong with yours. not sayin that for sure because i have not seen in person what is going on with your car. but that could be the answer

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by josh’s_accord &raquo;</TD></TR><TR><TD CLASS="quote">oka, so i got my ecu. it fixed mt problem. maybe thats what is wrong with yours. not sayin that for sure because i have not seen in person what is going on with your car. but that could be the answer</TD></TR></TABLE>

thanks for the info man i might have to try it out. lol thats funny your pretty close to me and have the same problem

 

lol yeah. that fixed one of my problems but i got a few more to fix