240sx hesitation help
well i used to own a manual civic..and i can tell the difference between the 2....when i bought the car the hesitation was already present but now its more noticeable....as for sound...when the car accelerates it sound as its suckin in air but the car does not pull...could a fan clutch affect acceleration...cuz i read somewhere that the fan should spin freely when the car is off bu mine barely moves...
If it was the clutch fan you could hear it get really noisy on the street. It makes alot of wind tunnel type of noise, and is really annoying.
If you have an automatic the clutch fan also prevents the auto from shifting and gearing properly.
I remember when my friend recked his auto 95 and it wouldn't shift out of park from all of the low drag from the clutch fan being locked in the radiator support, but trhat had more to do with idle. If you have an auto it can effect the car and make it feel slower due to the added drag of the clutch fan.
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Joined: Aug 2007
Posts: 27
From: MAryland
nope...but the ka only has 60k miles..but yea good point........umm i pulled out my spark plugs and they look white...which means i am running lean...i already replaced my pump and fuel filter...could it be my fuel pressure regulator??...help guys
Well I was just going to say something about that.
i would also check your fuel pressure?? Running pig rich ot super lean will ultimately cause the majority of your lag.
Another lag issue could be caused from the timing chain eating into the coolant passage, but that normally doesn't happen on ka's until an AVG mileage of 120,000m. This causes coolant to run into the oil pan causing hydrostatic lock.
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Registered User
Joined: Aug 2007
Posts: 27
From: MAryland
well nothin changed..i adjusted timing to stock, replaced o2 sensor but nothing....oh and also i bought a used working maf for 50 bucks to see if it was my maf but nothing changed...help guys..the hesitation is really anoying but my idle is fine....could it be a weak coil?...i also noticed i have exhaust leak in my muffler...i have an apexi exhaust. any other suggestions other than my fuel pump(walbro intalled)...would help alot thanks!
Registered User
Joined: Dec 2007
Posts: 31
From: Reno
Check your TPS, fix that exhaust leak and check the fuel pump to make sure its ok. Like you said if the spark plugs are white your running really lean. Running really rich is better than running lean obviously. Hate to see the dimise of a 60k mile KA due to a simple problem. Also reconnect the wire that were cut or replace the sensor just to be sure. Everything is there for a reason.
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