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mikebte · 09-11-2018, 03:23 PM

Still having the issue?
Have you tried hooking up a vacuum gauge and seeing whats it says?

Saw this on another post, may help you get started. Hesitation can be a few things but good to start with a vacuum gauge.

09-11-2018, 03:23 PM	#2
mikebte Registered User Join Date: Oct 2011 Location: Tucson, AZ Posts: 639	Re: OBD code 21 & 87 Still having the issue? Have you tried hooking up a vacuum gauge and seeing whats it says? Saw this on another post, may help you get started. Hesitation can be a few things but good to start with a vacuum gauge. Attached Images __________________ 1959 Chevy Apache 3100/ 283 TBI / 4L60E My YouTube: https://www.youtube.com/mikebtte