LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Question on vacuum readings-BAR-MAP?

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Feb 19, 2004 | 04:49 AM

#1

ead94z28

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Posts: 450

From: Maryland

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Question on vacuum readings-BAR-MAP?

How do I figure out my vacuum reading at idle from these numbers:

IAC-13
MAP-.410/ volts 1.55
Barometer-1.033

I think vacuum=bar-map but it's not making too much sense.

Last edited by ead94z28; Feb 19, 2004 at 05:49 AM.

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Old

Feb 19, 2004 | 05:53 AM

#2

ead94z28

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Posts: 450

From: Maryland

Ok, tell me if i'm right.

Map converted to Hg=11.8
Bar converted to Hg=30

Bar-Map=18.2

Now if that's right, it would seem I have a small vac. leak, correct?

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Old

Feb 19, 2004 | 08:24 AM

#3

96ZRDR

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Joined: Jun 2002

Posts: 537

From: McAllen Tx. USA

Your vaccum is good, but I know i have seem sone hit 20inches at idle, so yes you could have a very small vaccum leak, but probably nothing to arouse much concern

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Old

Feb 19, 2004 | 01:51 PM

#4

ead94z28

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Registered User

Joined: Aug 2003

Posts: 450

From: Maryland

Well, thats good to know. I won't go nuts trying to find it. Thanks.

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