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injector question

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Offline kubik1981

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injector question
« on: October 29, 2008, 06:16:15 PM »
i have my 1990 tracker 8v 5sp with a/c.  The question i have with no accessories running it is quite when i turn on my lights or like today when i turn on my heater it now makes a loud ticking sound. turn it all off it stops. i open my hood and and listen it is loudest at the throttle body.  Any ideas on what this noise could be.
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Offline derekj

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Re: injector question
« Reply #1 on: October 29, 2008, 10:12:22 PM »
Can you touch the t/b and tell where it is coming from? Maybe it's coming from the alt?

Derek
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Offline Rhinoman

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Re: injector question
« Reply #2 on: October 30, 2008, 06:02:31 AM »
Its most probably the Idle Speed Controller (ISC) which will ramp up with electrical load. Check your ground connections.
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2000 Vitara 1.6, 3+3 Lift, 33"MTs, 5:83s, LWB brakes, Winch, Snorkel, Safari Rack
1986 SJ413K PickUp, 1.6L conversion.

OBD1 - Full diagnostics on a PC/Laptop: http://www.rhinopower.org
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Offline kubik1981

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Re: injector question
« Reply #3 on: October 30, 2008, 07:15:36 AM »
if it has a bad ground will it make that noise. Because i know if turn something on and it makes that noise the engine does not kick up the rpm's
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Offline Rhinoman

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Re: injector question
« Reply #4 on: October 31, 2008, 11:48:41 AM »
Quote from: kubik1981 on October 30, 2008, 07:15:36 AM
if it has a bad ground will it make that noise. Because i know if turn something on and it makes that noise the engine does not kick up the rpm's

I don't believe that the idle speed should increase. The ISC is adding more air to increase power and maintain the idle speed. If it has a bad ground it could operate erratically causing it to be noisy. It may be shot.
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2000 Vitara 1.6, 3+3 Lift, 33"MTs, 5:83s, LWB brakes, Winch, Snorkel, Safari Rack
1986 SJ413K PickUp, 1.6L conversion.

OBD1 - Full diagnostics on a PC/Laptop: http://www.rhinopower.org
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Offline kubik1981

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Re: injector question
« Reply #5 on: October 31, 2008, 05:06:46 PM »
not to be stupid but where abouts on the throtle body is that sensor
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