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ZUKIWORLD Discussion Forum => Technical Discussion - Beginner / Repair => Topic started by: ingler99 on November 05, 2011, 06:09:35 PM

Title: 91 EFI hesitation help
Post by: ingler99 on November 05, 2011, 06:09:35 PM

I have a 91 samurai that has EFI it has a header and the cat has been removed but it is very sluggish when you first take of or when throttle is barely opened. I replaced plugs wires fuel filter and air filter with no noticeable change it also seems worse when it is cold outside but it won't light check engine light so I am at a loss anyone know where to look? ???

Title: Re: 91 EFI hesitation help
Post by: mrfuelish on November 05, 2011, 09:22:36 PM

I would first make sure that it has a 02 sensor and that the connection is good to it and then see if you have a tps and that it is in the right place with a volt-ohm meter.

Title: Re: 91 EFI hesitation help
Post by: ingler99 on November 05, 2011, 11:46:10 PM

it has both so i will check into both for errors thanks

Title: Re: 91 EFI hesitation help
Post by: rbparker on November 06, 2011, 07:15:58 AM

Mass air flow sensor may be another suspect.

Title: Re: 91 EFI hesitation help
Post by: mrfuelish on November 06, 2011, 01:18:05 PM

I Think he has a MAP sensor.