engine "shudders" when starting from dead stop

**badkuk** · August 9th, 2009 12:21 AM

hi peeps,

i've been noticing this for years now, but it seems to have gotten worse lately. At dead stop, especially when the engine is cold(though nangyayari din after driving for a while), my ride "shudders" before moving forward. Sa napansin ko, it usually disappears when i rev the engine a bit higher.

What could be the cause? Recently lang kasi naayos ung aircon, and i feel that the rpm drops very low at times(something like 400-600 ata); di ko lang napansin kung sabay ba sa low rpm ung pag shudder niya.

Or could there be something wrong with the transmission? (gasp)Sliding clutch?

'89 Corolla XL with the 2e engine po pala ung sasakyan. tia

**Howard Roark** · August 9th, 2009 12:38 AM

check engine support. baka wasak na kaya nararamdaman mo na vibration pag nag engage ang aircon, wherein nadadagdagan ng load ang engine.

**v6dreamer** · August 9th, 2009 05:40 AM

Youll need to look at the idle air accuator located on the throttle body poss clogged due to carbon or simpley quit working.

**jick.cejoco** · August 9th, 2009 05:59 AM

Originally Posted by badkuk

hi peeps,

i've been noticing this for years now, but it seems to have gotten worse lately. At dead stop, especially when the engine is cold(though nangyayari din after driving for a while), my ride "shudders" before moving forward. Sa napansin ko, it usually disappears when i rev the engine a bit higher.

What could be the cause? Recently lang kasi naayos ung aircon, and i feel that the rpm drops very low at times(something like 400-600 ata); di ko lang napansin kung sabay ba sa low rpm ung pag shudder niya.

Or could there be something wrong with the transmission? (gasp)Sliding clutch?

'89 Corolla XL with the 2e engine po pala ung sasakyan. tia

baddcook,
is your car equipped with a variable venturi carburetor?
jick

**badkuk** · August 9th, 2009 02:19 PM

er...sorry, no idea B) stock carb lang po, ung aisin ata ung tatak

**jick.cejoco** · August 9th, 2009 02:28 PM

Originally Posted by badkuk

er...sorry, no idea B) stock carb lang po, ung aisin ata ung tatak

badkuk,
its characteristics are: equipped with a sliding plunger with a needle installed on it, no choke plate, no throttle plate
jick

**speed unlimited** · August 9th, 2009 02:39 PM

Iyong tungkol sa pagbaba ng rpm pag nakabukas air con pa check mo na lang adjustment ng idling para sa aircon . masyado mababa ang idling mo.

**reym** · August 10th, 2009 11:23 AM

You can try to isolate the problem.

Aircon - turn of the aircon then use the vehicle normally. If it doen's shudder then its the aircon.
If it still shudder check the engine and transmission mounts, if no fault is found.
then You might have a dragging clutch (if its manual tranny).

**conzky** · August 10th, 2009 12:38 PM

since, as you mentioned, your car shudders when starting to move forward, check your clutch bro. IMHO, most likely it's the cause of the shuddering.

**badtoy** · August 10th, 2009 05:28 PM

Originally Posted by conzky

since, as you mentioned, your car shudders when starting to move forward, check your clutch bro. IMHO, most likely it's the cause of the shuddering.

same response here. this shudder occurs when you engage the clutch. Worn out na yung clutch release bearing or pressure plate. pag replace nyan sabay sabay na. clutch disc, release bearing and pressure plate.