So its happening again. It starts to studder after being driven for alittle over 20

minutes. It stopped after I got a routine tune-up, and now it just recently started

doing it again. It only happens in 2nd-5th under 2k rpms. Any help would be

amazing, I just cant pinpoint the problem. Thanks in advance.

 

bump

 

missfiring?

 

yeah you could call it that, it just kinda like jerks until i hit 2k or above

 

when did it start happening? did you add any mods to your car recently??

 

is like bogging? each symptom sounds similar but they all have different causes so you have to be really specific to hit the nail right on the head

 

no the car is completely bone stock, with 151k on it. I don't know really know how to explain it. At idle it seems to like make a barely noticeable little pop., which shakes the car.

 

Yeah, thats a missfire in one or more of your cylinders.

 

how can I go about fixing this?

 

Jumper your Error code connector located in behind the center counsol. It should be a blue tiny blue twin wire connector. The cel might tell you something.

Do you know how to take cel codes?

 

yes by my CEL isnt on, will it show something even when its not on?

 

but yeah, the missfire could be something along the ignition circuit. Check out your spark plugs. Pull them one by one and see what colours they are.

 

you mean your check engine light is NOT on right?
But yeah, you can have errors sometimes with no check engine light.

You should maybe check for cel's

Looking for cylinder missfire error codes when the check engine light flashes.
I don't remember the numbers. You'd have to search that yourself

 

yes, my check engine light isnt on, and where is this little plug located?

 

you stick your head where your gas pedal is. Look right. The center counsol plastic moulding down to the right of your gas pedal is hiding the tiny two wire blue connector. You have to gently pry the plastic moulding back and stick your hand in and feel around for a loose connector thats just floating there not plugged into anything. You than stick a paper clip in one side and jumper it to other side. Turn your igniton key on to accessories don't start it though and watch your check engine light flash. If it doesn't no error codes. If it flashes count how many Long and short flashes there are. After a longer pause it restarts and continues to repeat if you keep ignition turned to on and paper clip in connector.

 

You should get a hanes manual or chilton or an online factory manual.
B4 you do anything yourself to your car you should know everything and have access to drawings ect.

 

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
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

 

Is there anyway someone could post a pic of this, so I could see it done?

 

Well I guess I know now why mine bogs under 2k.

 

to check for cels you mean?

 

Like I know how, but is your check engine light suppse to come up when you first start your car with all the other lights? Because mine hadnt ever come up.

 

bump

 

anyone?

 

Yes the check engine light comes on for a sec or two when you start up

 

so that means mine is out...how do I changed it?