94 civic sedan

LILNETO · 06-28-2008, 10:00 PM

the car starts and idles fine until it gets warm,then it starts missing.Could it be the o2 sensor or the TPS?

djenn434 · 06-28-2008, 10:35 PM

Spark Plugs -
Worn, faulty, fouled or incorrect spark plugs can cause a misfire or rough idle.

Timing Belt -
A misaligned timing belt can cause a misfire or rough idle.

Engine Mechanical -
Mechanical engine problems can cause a misfire or rough idle.

Exhaust Gas Recirculation (EGR) Valve, If Equipped -
An EGR valve that is stuck open can cause a misfire or rough idle.

Overlooked Causes

Grounds -
Poor engine control module (ECM) grounds or sensor grounds can cause the ECM to miscalculate fuel delivery and cause a rich condition resulting in a misfire or rough idle.

A#1 · 07-16-2008, 10:32 AM

how many miles on the car...excessive worn exhaust valves can cause this problem...upon quick excelleration does the engine seem to misfire...if so the exhaust valves would be my first guess....

VP705 · 08-04-2008, 09:20 PM

Maybe posting this in the Civic forum would help you more?

06-28-2008, 10:00 PM	#1 (permalink)
LILNETO Registered User Join Date: Jun 2008 Posts: 1 OS: WINDOWS XP PRO	94 civic sedan the car starts and idles fine until it gets warm,then it starts missing.Could it be the o2 sensor or the TPS?

06-28-2008, 10:35 PM	#2 (permalink)
djenn434 Registered User Join Date: Jun 2008 Location: MN Posts: 1 OS: XP	Re: 94 civic sedan Spark Plugs - Worn, faulty, fouled or incorrect spark plugs can cause a misfire or rough idle. Timing Belt - A misaligned timing belt can cause a misfire or rough idle. Engine Mechanical - Mechanical engine problems can cause a misfire or rough idle. Exhaust Gas Recirculation (EGR) Valve, If Equipped - An EGR valve that is stuck open can cause a misfire or rough idle. Overlooked Causes Grounds - Poor engine control module (ECM) grounds or sensor grounds can cause the ECM to miscalculate fuel delivery and cause a rich condition resulting in a misfire or rough idle.

07-16-2008, 10:32 AM	#3 (permalink)
A#1 Registered User Join Date: Jul 2008 Posts: 47 OS: Windows XP Pro Service Pack 2	Re: 94 civic sedan how many miles on the car...excessive worn exhaust valves can cause this problem...upon quick excelleration does the engine seem to misfire...if so the exhaust valves would be my first guess....

08-04-2008, 09:20 PM	#4 (permalink)
VP705 Registered User Join Date: Jul 2008 Location: Sac, NorCal Posts: 36 OS: WinXPSP2,VistaUltimate My System	Re: 94 civic sedan Maybe posting this in the Civic forum would help you more? __________________ If all else fails, Read the manual.