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bad throttle response

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bad throttle response
« on: February 05, 2007, 04:24:42 PM »
theres a dead spot right off idle if i blip the throttle... it drives me crazy.. anyone know how to fix this???     87 samurai  1.3l

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Offline Low Range

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Re: bad throttle response
« Reply #1 on: February 05, 2007, 06:05:45 PM »

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Offline ZukiPower

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Re: bad throttle response
« Reply #2 on: February 05, 2007, 07:59:56 PM »
Use to have exactly the same problem about four years ago.

The cause was a defective throttle position sensor.

That TPS is simply a potentiometer linked to the throttle.  It tell the computer how much throttle is applied at any moment.

Mine have a small crack in is resistive band.  So when the cursor reach that exact point, the TPS send a zero-volt message and the computer react by decreasing the amount of fuel.

I simply change the TPS (take about 3 minutes! It's a modular component with simple solderless plugs) and it run just fine now.  A new TPS worth about 150$ but I manage to find a used one for 50$.

I've seen on some other forums than that particular problem is very common in '90s zukis.
There's a old saying in Quebec who said: "Grosse corvette, p'tite quequette!".  It means "Big cars are for those who have to compensate for a very small wiener".  Therefore, I love my VERY SMALL Zuki!!!

Re: bad throttle response
« Reply #3 on: February 06, 2007, 08:40:41 PM »
Is it carbed? Check acceleratorpump. See if gas squrits out when you push throttle. Check with engine off.