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Old 29 Nov 2007, 10:44 am
Fresh Cruiser
 
Join Date: Nov 2007
Location: St. Joseph, MI
Posts: 20
Default New to the PT

First off I just wanted to say hello to everyone. I am a relatively new PT owner and just had a question. I did some searching on this site and others and found partially what I was looking for but now for the question. I got the following codes when my check engine light came on, P1494, P1495 they both have to do with the leak detection pump pressure swith. I was wondering if any others out there have had these codes and what I can expect when trying to fix the problem? Also would it be safe to continue to drive the car with those problems? Thanks in advance for any help you can give.
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Old 29 Nov 2007, 11:31 pm
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Join Date: Nov 2007
Location: St. Joseph, MI
Posts: 20
Default Re: New to the PT

I got the code 1495 cleared but could not get the 1494 cleared. If anyone has some info on what to expect that would be great.
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Old 30 Nov 2007, 07:45 am
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Join Date: Sep 2001
Posts: 27,744
Default Re: New to the PT

When someone new comes along with a code, what I usually do to help them is to do a google search. Type in "Chrysler fault code P1494" to see what others have done with the same code.

Here's some I found......

"P1494 (M) Leak Detection Pump Sw or Mechanical Incorrect input state detected for the Leak Detection Fault Pump (LDP) pressure switch" is the actual 1494 error code.

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 doesnít take a very big leak anywhere in the system to set the code and thatís if itís a leak and not an electrical or mechanical fault.

Start with the easiest, look at your fuel cap. Is the gasket good? Buy a new one, clean where it seats well, put it on making sure it clicks at least 3 times, and see if that solves it. If not you will have to start looking at hoses for hairline cracks. And yes, although it's rare, sometimes the canister itself gets a crack and needs to be replaced. It will be a dealer only item of course.

===================

check the gas cap for signs of rust
check hoses by the purge solenoid.and by the throttlebody on the intake manifold and replace if cracked
per Chrysler/jeep training
a code must not be erased ,rather fix the problem and let the car run 3 good trips.you accomplish this by running vehicle like you normally do(if you do not have a (drb3)(scanner)until the car no longer "sees" the problem on three consecutive self diagnostic tests.the car will then clear the code meaning the problem is solved

================================

On a personal note. My wife's brand new KIA had the engine light come on a full day after I filled it up. There's no way to get the code on a KIA without a scanner. Car was running OK and I called the dealer for an appointment. They said "check the gas cap", and I said SURE, the old gas cap trick. But I did take it off and put it back on making it click shut at least 4 or 5 clicks, and made the appointment anyway. Before the appointment came around, the light went out. I guess it really was the gas cap. Sounds like you might have the same thing.
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Last edited by CREWZIN; 30 Nov 2007 at 07:47 am.
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Old 01 Dec 2007, 02:16 pm
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Join Date: Dec 2003
Location: San Antonio, Texas
Posts: 535
Default Re: New to the PT

You are going to have to replace the Natural Vacum Leak Detection pump. Fairly common problem. The switch inside it has gone bad.
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Old 04 Dec 2007, 09:43 am
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Join Date: Nov 2007
Location: St. Joseph, MI
Posts: 20
Default Re: New to the PT

Thanks for that slartyblarfast. Have you had that problem with your PT? Is it something that you can do or should I take it to a dealer?
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