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Anthony, ASE Certified Technician
Category: Jeep
Satisfied Customers: 11808
Experience:  ASE Master Automobile Technician with over 20 years exp. in this field.
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My 01 jeep grand cherokee 4.0 coded p10701 has low vacumm at

Customer Question

My 01 jeep grand cherokee 4.0 coded p10701 has low vacumm at intake and high fuel pressure 60 lbs . new plugs , new fuel pump can't find any vacumm leaks at manifold. also put on new filter .
Submitted: 2 years ago.
Category: Jeep
Customer: replied 2 years ago.
code is p0171 I have 60lbs of fuel pressure at all times ? replaced fuel pump new plugs can't find any vacuum leaks
Customer: replied 2 years ago.
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Expert:  Anthony replied 2 years ago.


Is it blowing black smoke at idle?

Customer: replied 2 years ago.
Customer: replied 2 years ago.
It gas 60 lbs of fuel pressure when you turn key on
Expert:  Anthony replied 2 years ago.

Thats a problem with the bank 1 front O2 sensor. Either its bad or its wiring is shorted.

Customer: replied 2 years ago.
Okay I will try that Only thing I haven't replaced . I'll get back to you soon .
Expert:  Anthony replied 2 years ago.


Check the wiring to the sensor in the front exhaust manifold. It shorts and causes the front section to run rich. Also put in a new sensor.

Expert:  Anthony replied 2 years ago.

Here's the wiring: