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1.3 FI bouncing idle

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Offline TheLastSamurai

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  • 91' TFI
1.3 FI bouncing idle
« on: August 19, 2015, 12:19:54 AM »
Hello all, I have a 1991 JL and it has a recently rebuilt 1.3 with FI. It starts and idles up just fine and drives smooth. Once its warm however, the idle seems to bounce a little bit, almost like there's a miss but with out actually missing. Has anyone ever experienced this? Any advice appreciated.
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Offline TheLastSamurai

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  • 91' TFI
Re: 1.3 FI bouncing idle
« Reply #1 on: August 21, 2015, 10:42:46 AM »
In case anyone was wondering, I found info that the throttle position sensor or valve may cause this issue. I was told to clean it and recalibrate.
« Last Edit: August 21, 2015, 10:43:56 PM by TheLastSamurai »
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Offline Rhinoman

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Re: 1.3 FI bouncing idle
« Reply #2 on: August 21, 2015, 10:57:46 AM »
First off, check for vacuum leaks all round the hoses, also check that the EGR is working correctly.
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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 TheLastSamurai

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  • 91' TFI
Re: 1.3 FI bouncing idle
« Reply #3 on: August 21, 2015, 10:44:45 PM »
no vacuum leaks, did a spray test, no bad hoses.
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Offline mrdezyne

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Re: 1.3 FI bouncing idle
« Reply #4 on: September 28, 2015, 11:36:18 AM »
Same issue here, looking for answers.  No vacuum leaks and it runs fine otherwise, but when you stop or slow down at a light it starts a pulsing idle... annoying!
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