Jeep has a reading of Manifold Absolute Pressure senor Voltage High

Asked by Sep 22, 2016 at 07:44 PM about the 1998 Jeep Cherokee 4 Dr Limited 4WD

Question type: Maintenance & Repair

9 Answers


Check the connections to it and all vacuum lines to and around the engine.

2 of 2 people found this helpful.

Listen for vacuum leaks (hiss).

2 of 2 people found this helpful.

The higher the engine vacuum, the lower the voltage reading.

2 of 2 people found this helpful.

Here Below is a url copy & paste it to new browser window its a trouble shooter test for MAP sensor

2 of 2 people found this helpful.

2 of 2 people found this helpful.

Here is another url for it if its the 2.5

1 of 1 people found this helpful.

2 of 2 people found this helpful.

I have a 1998 Jeep Grand Cherokee Limited 5.2 it only stays running for 10 to 15 minutes now!! Broke down when I drove it all the way to Ky. from NC It had been cutting off while driving and would restart when motor cools down!!! It has became changed disturber cap also button, plugs and wires!!! Put in new fuel pump and filter.....Still shutting off when motor heats up!!! Will be checking all the above replies....Thank you for your help.... I'll be sure to let you know if it helped!!!


Now that I have some more information the distributor has a module pick up that can cause these symptoms, It is located below the rotor button and is a small item. Some distributors have to come out to replace it but others do not. It may have a different name but any good sales person at good auto parts store will know it by the "pick up". I had a bad pick up once and those symptoms you state happened to me, I used my snap-on brick and I could not find it with the computer. I changed it out just to rule it out and to my delight it never did it again. Mine just died after warm and after about 30 minutes it would go again for 15-20 minutes and die, I always made it home but took a long time.

2 of 2 people found this helpful.

Your Answer


Looking for a Used Cherokee in your area?

CarGurus has 61,834 nationwide Cherokee listings starting at $2,999.


Jeep Cherokee Experts

  • #1
  • #2
    Daniel Guillen-Pizzorni
  • #3
View All

Related Models For Sale

Used Jeep Grand Cherokee
1,082 Great Deals out of 72,846 listings starting at $1,195
Used Jeep Wrangler
520 Great Deals out of 19,538 listings starting at $1,999
Used Toyota 4Runner
348 Great Deals out of 27,129 listings starting at $1,800
Used Ford Explorer
1,265 Great Deals out of 70,147 listings starting at $1,000
Used Ford F-150
3,299 Great Deals out of 224,480 listings starting at $1,200
Used Honda CR-V
931 Great Deals out of 60,374 listings starting at $1,495
Used Toyota RAV4
841 Great Deals out of 54,445 listings starting at $999
Used Dodge Durango
392 Great Deals out of 24,350 listings starting at $1,500

Used Cars For Sale

2018 Jeep Cherokee For Sale
44,025 listings starting at $14,990
2017 Jeep Cherokee For Sale
72 Great Deals out of 6,017 listings starting at $14,999
2016 Jeep Cherokee For Sale
135 Great Deals out of 3,591 listings starting at $10,900
2015 Jeep Cherokee For Sale
182 Great Deals out of 4,374 listings starting at $10,889
2014 Jeep Cherokee For Sale
145 Great Deals out of 3,300 listings starting at $9,999

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.