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ZUKIWORLD Discussion Forum => Technical Discussion - Beginner / Repair => Topic started by: TheLastSamurai on August 19, 2015, 12:19:54 AM

Title: 1.3 FI bouncing idle
Post by: TheLastSamurai 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.

Title: Re: 1.3 FI bouncing idle
Post by: TheLastSamurai 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.

Title: Re: 1.3 FI bouncing idle
Post by: Rhinoman 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.

Title: Re: 1.3 FI bouncing idle
Post by: TheLastSamurai on August 21, 2015, 10:44:45 PM

no vacuum leaks, did a spray test, no bad hoses.

Title: Re: 1.3 FI bouncing idle
Post by: mrdezyne 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!