Question about Jeep Cars & Trucks
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Posted on Jan 02, 2017
SOURCE: jeep codes location of unit
Got me a complete manual for 199 jeep factory model and found location of each individual unit in question. Manual gives u possible solution to each code and repair and or replace. As a mechanic myself testing, trouble shooting and repair was not that difficult. Shift solenoid was very difficult to get to. Located under the head lamp passenger side.
Posted on Nov 19, 2008
the leak detection pump pressurizes the evaporative system to check for leaks. the computer has detected there is a fault somewhere in the cicuit (wiring) that operates the pump.
Posted on Jun 26, 2009
1st try and search for a vaccum leak, due to the fact that these vehicles have had some bad problems with the length of wires and hoses, if there is a vaccum leak in the vehicle somewhere that will trigger other malfunctions in your vehicle. Using a can of starting fluid or Brake cleaner spray lightly spray around our engine til you hear the motor rev-up and the spot you have sprayed will determine where your vaccum leak will be. And then check under your distributor cap for any moisture be sure to take a rag and wipe and residue off. Also check the firing order on your distributor.
Posted on Oct 28, 2009
P0445= Evaporative Emission System Purge Control Valve Circuit Shorted
P1495= Leak detection pump solenoid circuit
both of these codes are just emission codes and are nothing to really worry about if you can live with the engine light being on all the time they won't hurt engine in any way and you won't notice any change in the way the van runs
there really only two reasons to fix this
1. you can't stand engine light being on
2. you live in a state with smog laws that require routine inspections
Posted on Mar 06, 2011
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Aug 10, 2015 | Dodge Caravan Cars & Trucks
Mar 08, 2015 | Dodge Ram 1500 Cars & Trucks
During evaporative system diagnosis, Leak Detection Pumps have mistakenly been replaced. A thorough inspection for pinched, kinked, or disconnected supply vacuum lines (as currently listed in the Powertrain Diagnostic Procedures) is a critical step in diagnosing DTC P1494 (LDP SW OR MECHANICAL FAULT). Additionally, the other evaporative leak faults (DTC P0442 - SMALL LEAK, P0455 - LARGE LEAK, and P0456 - VERY SMALL LEAK) should have the supply vacuum lines examined for pinches or kinks prior to any LDP component replacement.
The supply vacuum lines should be checked from the engine compartment all the way to the fuel tank, including the LDP and purge system.
NOTE: VERIFY ALL RELATED SUPPLY VACUUM LINE ROUTINGS FOR PINCHES, KINKS, OR DISCONNECTION'S BEFORE REPLACING LDP SYSTEM COMPONENTS.
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Apr 16, 2012 | Cars & Trucks
Apr 16, 2012 | Cars & Trucks
Trouble Code: P1494 EVAP Leak Detection Pump Switch Or Mechanical Fault
LDP switch signal circuit is open or shorted to ground LDP switch power circuit is open (test power to Fused Ignition) LDP vacuum hose is clogged, loose or restricted LDP assembly is damaged or has failed (the switch has failed)
Apr 13, 2011 | Jeep Grand Cherokee Cars & Trucks
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Apr 09, 2009 | 2001 Dodge Neon
Mar 04, 2009 | 2002 Jeep Grand Cherokee
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