Question about 1999 Jeep Grand Cherokee

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1999 Jeep Grand Cherokee.....My check engine light is on - Took it to auto zone, and they said it is error P1494. What is this and how do you fix it. Is it major?

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Check the answer in other post mine: Grand Cherokee Jeep code P1494

Hope helps (remember to rate this).

Posted on Sep 30, 2010

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Check engine light came on code P0505, P0135, P0155, P1494.


kia ora Mark , greetings , sorry bro these code things are beyond me ive been driving around with a p0161. i believe its a bank2 down stream sensor for 2 years , maybe you can help me , 2002 grand cherokee 4.7 Ho , do you know what brand of sensor or part numbers i need , an idea of cost for same . i forgot to mention i am in New Zealand and auto parts are so much more expensive here , no idea at all , much help needed everyone thank you all , hope you get sorted Mark cheers mate

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3 Answers

1999 Jeep Grand Cherokee.....My check engine light came on, I took it to Auto Zone and they said it was code P1494. What is that and how hard is it to fix?


Answer
Hi ,
The code refers to the leak detection pump that is part of the gasoline vapor control system which is for pollution minimization. It says either that the pump switch or mechanical operation is faulty. According to a Chrysler manual I have, you would find the pump, probably on the underside of the vehicle by tracing the hoses related to the vapor recovery tank that may be in the right front corner of the engine compartment (I don't know Jeep designs) and then check to see if the pump starts when you turn the ignition to the run position when the vehicle is cold. Then remove the vacuum hose side of the pump and see if it draws a vacuum. If it does, then the vacuum-detecting switch that detects that the pump operation is OK may be faulty. If the pump doesn't start or doesn't draw a vacuum then the power to the pump, the pump itself, or the vacuum line may be leaky. Finally, the powertrain controller could be at fault.
In any case, that is where the issue is, and it should not be a major issue if it is handled by a knowledgeable mechanic. But you could check it over yourself if you are so inclined. p.s. your best bet is to take it to a jeep dealer to get it fixed hope this helps please dont forget to rate my solution

Sep 30, 2010 | 1999 Jeep Grand Cherokee

1 Answer

My check engine light is on - Took it to auto zone, and they said it is error P1494. What is this and how do you fix it. Is it major?


P1494 is the code for the leak detection pump and or system, which is part of the early evaporative emission system. (Fuel tank fumes)

It's there to allow the computer to run an integrity test of the fuel tank, lines and carbon canister's ability to contain all of the fumes coming from the tank and all line associated with the system.

The code could be set for a number of reasons such as a faulty gas cap, cracked vacuum lines, solenoids & vent valves stuck to the pump itself.
It can be a very difficult fault to cure being it doesn't take a very big leak anywhere in the system to set the code and that's if it's a leak and not an electrical or mechanical fault.

Sep 30, 2010 | 1999 Jeep Grand Cherokee

1 Answer

My check engine light is on. What does it mean? 1998 Jeep Cherokee Sport


take your jeep to the Auto Zone auto part, ask them check that Engine Check light for you. They can tell you what's wrong and what need to be fix.

Apr 12, 2010 | 1998 Jeep Grand Cherokee

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2000 Jeep Grand Cherokee check engine light


You'll need an OBD I code reader or similar reader to pull the codes. You can purchase from autozone or online.

Feb 12, 2010 | 2000 Jeep Grand Cherokee

1 Answer

Codes for durango p0443-0753-1765-1494


danbalue, a code P1765 means Transmission 12V Supply Relay Control Conditions and P1494 means EVAP LDP Pressure Switch Fault Conditions.

I found info on the following codes:
P0443 - http://www.obd-codes.com/p0443
P1494 - http://www.check-engine-light.com/dodge

Good luck.

Sep 05, 2009 | 1999 Jeep Grand Cherokee

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call the jeep dealer with v.i.n. number so you can get the right speed sensor and just install in the rear of your transmission. will only take about 10 min. to change

Jul 09, 2009 | 1999 Jeep Grand Cherokee

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Check Engine Light


Actually, just go to your local auto parts store and check the codes for free. If you go to a dealer, look forward to shelling out a minimum of $75 dollars. Most of the time its a oxygen sensor or something like that.

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1999 Jeep Grand Cherokee Laredo


I had a problem with my Jeep doing the same thing. It turned out to be the Crank shaft senor. It would just turn off even on the highway at 60mph.
If you can change it yourself you will save a lot of money.

Aug 11, 2008 | 1999 Jeep Grand Cherokee

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