MAP sensor check help

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Feb 23, 2010 | 01:41 PM

flexin91xj

Thread Starter

Senior Member

Joined: Jan 2010

Posts: 613

Likes: 1

From: Westminster Colorado

Year: 1991 (2-door)

Model: Cherokee

Engine: 4.0L

MAP sensor check help

Does anyone know how or have a link to checking the MAP sensor with a volt meter to see if its in spec. Im getting the number 13 check engine light code (No change in MAP from start to run) on my 91 XJ. Ive cleaned it with electrical cleaner and the vacume line to it and Ive checked all the vac lines as well.(no leaks) It also pops the 13 code twice in a row. Does that mean anything special?
Please help...

Thanks

Feb 23, 2010 | 04:33 PM

McRay

Member

Joined: Feb 2009

Posts: 158

Likes: 2

From: Conroe, Tx

Year: 1996 & 2001

Model: Cherokee (XJ)

Engine: 4.0

test map sensor at thermal B with ignition switch on and engine off the output voltage should be 4-5 volts at thermal c should be 4.5 to 5.5 volts A thermal should be ground