What causes high pressure in the engine?

Asked by Mar 03, 2014 at 08:06 PM about the 2002 Jeep Grand Cherokee Laredo

Question type: Maintenance & Repair

We have a brand new radiator, but high pressure caused coolant leak under the radiator
hose clamp. Our mechanic found high pressure, tightened up clamp and checked head
gasket as reason for high pressure, but did not detect any leaking. Car is not overheating.
What could cause high pressure?

1 Answer

58,815

Define "high pressure". Modern cooling systems operate at around 15 PSI at normal operating temperature (195°F). HTH. -Jim

Your Answer

Add photo

Related Questions

  • Oil pressure 7 answers

    what would be normal oil pressure for a Jeep Grand Cherokee Laredo?

    Jeep Grand Cherokee

    -

    Maintenance & Repair

  • Engine oil pressure Sensor 3 answers

    Dear sirs, good day what would be the normal range for the engine oil pressure sensor for jeep 2014 grand Cherokee, service light is on but the oil pressure range 91-100 psi and Diagnostic refer to ...

    2014 Jeep Grand Cherokee Laredo 4WD

    -

    Maintenance & Repair

  • What would cause my oil pressure to go up and down? 7 answers

    When im stopped the pressure is low but when i driving the pressure is normal or just below normal. I have a 95 JGC with the 4.0 I6.

    1995 Jeep Grand Cherokee

    -

    Maintenance & Repair

  • #5 spark plug literally burnt a hole through. What's the cause? 1 answer

    1999 Jeep Grand Cherokee, 4.0 V6 (Laredo) Did a tune up, replaced spark plug, spark plug rail and fuel injectors. Ran fine for about 60 miles and then check engine light came on, lost pressure.

    1999 Jeep Grand Cherokee Laredo 4WD

    -

    Maintenance & Repair

  • Cooling System Pressure Problems 3 answers

    All pertains to a 1985 Jeep CJ7 2.5L 4clylinder: About a month ago 2 leaks broke out in my cooling system. One around the water pump the other was a freezer plug. I replaced the water pump and repla...

    1985 Jeep CJ7

    -

    Maintenance & Repair

Search Jeep Grand Cherokee Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Jeep Grand Cherokee Experts

#1 inuevafreak
inuevafreak
Reputation 1,900
#2 Tom Demyan
Tom Demyan
Reputation 1,690
#3 thejeepdoctor
thejeepdoctor
Reputation 1,560
View All

Related Models For Sale

Used Jeep Cherokee
335 Great Deals out of 52,604 listings starting at $2,200
Used Ford Explorer
1,206 Great Deals out of 71,147 listings starting at $1,000
Used Jeep Wrangler
489 Great Deals out of 17,958 listings starting at $2,950
Used Toyota 4Runner
341 Great Deals out of 20,328 listings starting at $1,250
Used Chevrolet Tahoe
854 Great Deals out of 28,369 listings starting at $1,700
Used Dodge Durango
379 Great Deals out of 22,648 listings starting at $1,500
Used Ford F-150
3,218 Great Deals out of 205,090 listings starting at $1,779
Used Chevrolet Silverado 1500
2,743 Great Deals out of 149,174 listings starting at $1,500
Used BMW X5
472 Great Deals out of 15,345 listings starting at $2,899
Used Jeep Liberty
278 Great Deals out of 8,257 listings starting at $1,000
Used Toyota Highlander
642 Great Deals out of 22,080 listings starting at $2,000
Used Chevrolet Camaro
475 Great Deals out of 39,921 listings starting at $3,499

Used Cars For Sale

2017 Jeep Grand Cherokee Laredo For Sale
2,205 listings starting at $25,990
2016 Jeep Grand Cherokee Laredo For Sale
586 listings starting at $21,275
2015 Jeep Grand Cherokee Laredo For Sale
148 listings starting at $15,500
2014 Jeep Grand Cherokee Laredo For Sale
13 Great Deals out of 204 listings starting at $14,851
2013 Jeep Grand Cherokee Laredo For Sale
9 Great Deals out of 146 listings starting at $13,950