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JDM Corolla
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Discussion Starter · #1 ·
Hey guys!!! Ive noticed recently that my JDM Corolla sedan idles roughly.Wether or not the A/C is on.The vibration can be felt by everyone in the cabin of the car and I feel it through the steering wheel and brake pedal.Ive have changed 2 engine mounts, had the plug wires, plugs and distributor checked and everything is fine according to my mechanic.Last week I tried some injector cleaner but it hasnt seemed to work.I have also checked the PCV valve and it isnt blocked.What else could it be??? I am almost at my wits end as the rough idling is getting on my nerves!!!! Ive also had the timing checked and it is okay as well. Any help here would be greatly appreciated.My car if you guys remember is a JDM Corolla sedan equipped with the 5AFE engine...here are a couple of pics....








 

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1988 Corolla SR-5
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3,042 Posts
Is your idle RPM higher or lower than before the vibration started?
 

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JDM Corolla
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223 Posts
Discussion Starter · #3 ·
Im not sure.I havent noticed any drop in rpm.....hhhmm....I wonder if the engine needs a tune ot something....what do you think??
 
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Spud said:
Im not sure.I havent noticed any drop in rpm.....hhhmm....I wonder if the engine needs a tune ot something....what do you think??
what does the engine idle at? if its below 750rpm could be your problem. should idle at 750rpm and 800rpm with headlights on.
 

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JDM Corolla
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223 Posts
Discussion Starter · #6 · (Edited)
BLACK said:
When last u had it tuned?? Did your mechanic check the ISC ( Idle Speed Control ) valve??
Idle speed was 800 rpm....Ive never had the engine tuned.
 
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