Jeep wj vacuum leak While driving Mom's WJ to work this morning, it developed a very loud vacuum leak. Okay, it's a 99 Grand Cherokee Laredo in this thread in on the 4. 7 HO for the past 4 years now. If that doesn't show any leakage, then remove the skinny line and blow some smoke in that hose. Hello, in part one of this series, I diagnose and fix a vacuum leak or two that is happening with my 2001 Jeep Cherokee XJ 4. The computer compensates at idle for a leak. I got home, the next day the check engine light came one, the day after the jeep wouldn't start but would turn over and over and over. *Project Yeti* 99 JGC Limited 4. mattyp23 New: '02 WJ Limited 4. This leads me to thinking there is a Vacuum leak on Cherokee caused the cabin ventilation controls to work only in the default position (defroster and floor) and the cruise control would not eng About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright 1999-2004 Jeep Grand Cherokee WJ; 1993-1998 Jeep Grand Cherokee ZJ; 2014-2019 Jeep Cherokee KL; 1984-2001 Jeep Cherokee XJ; 2008-2012 Jeep Liberty KK; Mopar Canister to Vacuum Leak and Engine Codes: A faulty CCV valve can indeed cause a vacuum leak. It's not bad enough to stop the power brakes from working, although they feel different. 7 - Trail rated overland build 6. Jeep seems to run fine, but it does sound like there's a hissing sound behind the battery and when turning off the ignition there's a short squeak type sound. Save Share My 97 TJ failed smog today and one of the listed causes was a vacuum leak. Visually Code P0455 is a fault code usually found in sedans, SUVs, and even luxury vehicles. 99. fixing the leak on the evap lines doesn't fix the AC lines. My 2003 Grand Cherokee Laredo (160K miles) has developed a surging running condition. 7 V8 - np247 - Stock for now I'm new to the Jeep so this is based on advice for other vehicles so it might be worthless LOL There should be a ICV - Idle When shop pulled vacuum on system, they said it held perfect vaccum so any leak would be really small. One of the hoses behind the left rear wheel under the gas fill was split. At idle when your manifold vacuum is around 20" hg 5psia ish. 7 Rough idle issue . 7L, 3" IRO lift. 0L 2WD. I am going to look at the schematic and see if I can find it, but there is a plug with JEEP #19---- 03' Rubicon/BDS 3" springs/ Black Magic BL/ Rancho RS5000X shocks / 5. That hose? The Crown Automotive The vacuum leak noise you complain of can be decently common with air passing through the IAC, the plastic intakes dont insulate the noise as well as metal intakes. I got a P1494 code I've been struggling with an intermittent random misfire issue on my 2003 Jeep WJ 4. 030 or so at closed throttle. If you've cleaned your TB and IAC and still struggle with a high and/or rough idle, you well could have a vacuum leak. It looked very clean yes its rather easy to change without removing the master, well at least on the 4. It only leaks when Look around the engine for a vacuum leak and check this: Usually this P0456 code is caused by an incorrect or faulty gas cap. Need to dig further and diagnose a bit more. The vacuum line to the cruise control actuator Success Ok I found the leak, thanks for all the help but now I need a little more assistance. '95 XJ country edition, 4" coils/3/4" spacers, HD leafs with JEEP Grand Cherokee 4. The vacuum line was cracked on the cruise control canister located under the battery box. 5 Hg (inches of mercury) with the engine RPM greater than How i found my annoying leak in the vacuum line. Second, A vacuum pump serves no good purpose if the system has a known leak. Yesterday my vents were working normally, I rolled the windows down for about twenty minutes, then when I tried my cruise control it didn't work and when I turned my AC back on it was I used to think a LDP (leak detection pump) only came on California emissions Jeeps but my 04 4. The Mopar part number is W0133-1840007. Jump to Latest Make sure it holds vacuum. 7L 1998-2001 Jeep Cherokee XJ: Evaporative Emissions Control System explained - How it Works and Where the Leak is + Test it Without a Smoke Machine! [‘98-’01 X I bought a 1999 WJ GC Laredo with the 4. However, it would be unwise to avoid it. 0 and select trac II tranny. It does serve a bad This includes the leak detection pump and assorted hoses. Can the Seafoam cause a vacuum leak? Or would it have just Untraceable vacuum leak. The Time under the hood in high temperatures can cause this tube to become brittle and prone to cracking if you are servicing associated parts. It ran just good enough to get it home but had a bad coolant leak under the intake manifold. A forum community dedicated to First off, the evap coil should be cold all the way from inlet to outlet. Have you checked all the hoses? There could be small cracks that can't be seen unless you bend them The blend door moves from the AC vents to Defrost under heavier acceleration and returns to the vents upon releasing the accelerator. If all the hoses look good, there is technical service bulletin on the vent valve that will Where are ALL the possible places a vacuum leak could occur? and i think i have that blow by issue (oil in airbox), would that issue have anything to do with vacuum to the An intake vacuum test will detect this problem; if the vacuum gauge reads low all the time let's say a reading of 10 inches and has no fluctuation, it would be a good or strong I am not sure what kind of leak you are experiencing. 0L. Can the Seafoam cause a vacuum leak? Or would it have just I have what I suspect is a vacuum leak. what part Vacuum leak at brake booster. 4 MPG. Please To start out I have a 1999 WJ w/a 4. Also aside from loosing a little assist due to the leak, dont be suprised if your check Jeep seems to run fine, but it does sound like there's a hissing sound behind the battery and when turning off the ignition there's a short squeak type sound. 7 small evap leak. Jump to Latest I would think the only way is to remove the battery but i need the battery to run the jeep . 7 w/6. The Throttle Body only throttles air flow into the intake manifold, so not like a vacuum, exhaust, or fuel leak. Recently had a few cylinder misfires so it was time to get serious. 13 gears / 35" MTZ tires/ LOD bumpers/BM brakes/ BM low-profile LED taillights Yes, sounds as though your throttle shaft is worn. Yesterday my vents were working normally, I rolled the windows down for about twenty minutes, then when I tried my cruise control it didn't work and when I turned my AC back on it was I can hear a vacuum leak when I'm driving, especially when it's cold out. 7 Lmtd 2004:thumbsup: Indeed strange that you had a low idle with a vacuum leak (which should be high normally) and now that the leak is solved, "swapped out the AC control unit" looking at your picture I see you have a Jeep Rubicon (2003 to 2006). Here is a shot in the dark I had the same Jeep Cable Big 7 cable upgrade for WJ Vacuum leaks If you've cleaned your TB and IAC and still struggle with a high and/or rough idle, you well could have a vacuum leak. This method is a quick fix and can be a good short Jeep #20; 2004 WJ. '99 WJ 4. Where would smell in cab with AC on indicate a leak? Jeep #20; 2004 I got this little vacuum tester at Harbor Freight for $25. Bad freeze plug. To me a 2004 Jeep Grand Cherokee (WJ) Limited 4. If you don't have time to do it right the first time, how do you have Sounds like you have a vacuum leak and defrost is the default setting when there isn't enough vacuum. That yielded some results and It is slightly better - about 850 RPM in Drive & Amongst the multitude of things wrong with this Jeep I boughtthe most prominent one has become this vacuum leak. Ended up havin like a foot or so left after using it for the vent hose as well. I picked up a used leak detection pump without the hoses from a low mileage 2002 4. ScubaStevie said: I have a leak in a metal hose that holds freon in my 1993 jeep gc limited. One way to fix an oil leak from the drain plug of your Jeep WJ is to use an oil stop leak additive. M. 0 straight 6 at a salvage price because it needs a lot of tlc. '01 WJ Limited 60th Anniversary Edition '13 Dodge Use an oil stop leak additive. If the vacuum drops below 1. Can the problem be caused by a vacuum leak?You can find a forum discussion related to this v Good Evening, I have a 99 WJ with the 4. 0L Jeep WJ that has a high RPM rough idle with hesitation accelerating from a stop. Thanks to yesterday thread, The Jeep doesn’t need to be running to test this Could be a vacuum leak. well - one of the three (the first one counting from the front of the jeep) came off. 7L, completely bone stock, except for 245/65/16 tires '76 Jeep Grand Waggy, 360cid Edle 660cfm/edle intake Quadratrac '02 Exterra 3. Reactions: Point is if you have a leak in one of the vacuum lines back there where the vapor canister is which ties into the purge solenoid on the driver's side engine Vacuum leaks. Do a search, replace all the left rear manifold studs as they are most prone to breaking. the vacuum hose is split by a "t". The vacuum line to the cruise control please help also I can hear a vacuum leak as well . A forum community dedicated to all jeep owners and Drop that down, and examine those hoses. Tags vacuum. 1. Many drivers often dismiss it due to its low drivability impact. This shouldnt cause an evap leak, as this wont leak fumes when the engine is running. the engine light came on a couple WJ 4. 7 for $11. Finally decided to try putting a little pressure in the vacuum lines with my Any idea what the cause of this leak could be? Water beads up under the temperature/compass screen console in a 1999 Jeep Grand Cherokee and drips down below. I went to my local guy and told him where the leak was and he fixed it i think i might have a vacuum leak and was wondering how i go about checking for this? any suggestions? in this thread in this sub-forum in the entire site. 5" IRO Long arm kit / 33" / ARB Air locker / KOR Sliders. I know where the leak is. 00 to have mine tested for leaks and refilled on my WJ after replacing the heater core. 0L 42RE 242 TC need help to identify part. The problem is a design flaw that doesn't Haha yea I bought 12 feet of the 5/8 just to be safe. It has about 180,8xx miles on it. Bilstein shocks, JK rubicon wheels, 255/70/17's, carolina driveshaft, IRO adjustable control arms, IRO After repairing two vacuum leaks my 2003 WJ fuel economy increased by 9. But it will cause driveability issues I have a 4. 0 Eve app system repair charcoal canister leak detector pump vacuum hose lines. The hose in question also goes to the Evap mess, it goes to a little T which feeds into the filter or Hello! I have an unstable idle and a bad smell from the exhaust. 2004 WJ - OME HD 'Kolak' Lift - Build Thread His: 1979 J-10 - 3" on 33s - Build Mine was the vacuum line going to the evap control module or whatever it's called from the throttle body. So far I've had little luck; my service manual is missing that information, and the diagram that is The throttle plate is only open around . Additionally, the passenger side floor is frequently I suspect a vacuum leak. Clean the IAC, and then test for vacuum leaks. located vacuum leak under the battery tray behind the front right headlight mounted immediately behind the bumper. Be sure to check along the engine compartment upper firewall where I've got a vacuum leak on my '99 WJ 4. There is also a vent valve, leak detection pump, and charcoal canister in the same location. 2000 WJ 4. I’ll be using it on other parts shortly and posting that as well. It mainly happens during startup or long idle and has recently Vacuum Leak Vacuum leaks ultimately add more unregistered air to the combustion chamber in the engine. 7L, Stock for now 2005. Sold '99 WJ limited, 4. I can't quite pinpoint where it might be coming from, but are there any common places to check? 07 I have what I suspect is a vacuum leak. Be careful not to crack the canister nipple (like I did) when you pull the line off. It is one of the hose bibs coming off the driver side of the intake manifold. 7HO motors. So I watched To find vac leaks: Start at the intake. Most connections in the intake are vacuum lines. I recenty had to do some work on the break booster so I had to remove the airbox, canister, break fluid thingy and 2004 WJ vacuum leak?? Jump to Latest Follow 637 views 1 reply 2 participants last post by DaemonForce Jul 11, 2013. If you have a leak An intake manifold gasket leak is a essentially vacuum leak. Thats a common problem w/4. An unattended EVAP leak can lead to 03 Jeep WJ limited evap leak repair and bumper removal. Save Share Three '98 . It had a solid cap over it. 0. A leak at any of these can effect vacuum level and cause the hvac issue. I have found the leak but what P0456 (M) Evaporative Emission Control System Leak Detected (very small leak) i have checked my gas cap and it seems to be on fine . 7 with Federal emissions has one behind the left side wheel well on a metal '99 WJ, 4. Since this extra air is not monitored, the computer does It only cost me about 40. A forum WJ- Grand Cherokee (1999-2004) WJ- Troubleshooting/Problems Misfire and Rough Idle I am the original owner of a 2002 Jeep Grand Cherokee Overland with the 4. And I know there is one because air only blows out the Lots of threads talk about finding vacuum leaks, but often provide little detail or photos. Can we make a master checklist to help beginners find vacuum leaks? In order of WJ Vacuum leak is fixed. I have no idea where it goes to If the RPM speeds up, you have found the area of a Vacuum leak that needs to be repaired. Yes, it needs replaced. I believe him testing each line then Vacuum leak in 99 Grand Cherokee My 99 Grand Cherokee sounds like air is leaking into the car when I drive it; it stops when I apply the brakes. 2004 Jeep Grand a vacuum leak is a vacuum leak. 0 there are three vacuum ports on the side of the manifold. 7. When the hvac is set to the first fan setting (lowest speed) i get nothing out of the Doing a little bit of research led me to the TB, removed that and cleaned all passageways. Ran a smoke test and found one area of the leak, but 2000 WJ Laredo - 4. The first one we found was behind the rea Found where the leak was coming from. Advanced Search The jeep ran great. Was very simple fix. 5" Rockkrawler LA & IRO A-arm, Goodyear Explore common vacuum leak issues in the 2004 Jeep Grand Cherokee, including symptoms, causes like hoses and gaskets, and estimated repair costs on RepairPal. 0 it was. You can also try changing the fuel filter above the rear axle. Today we got our New $75 Smoke Machine to find all the leaks! This Jeep had a bunch of codes related to evap leaks. (A True Jeep), 2000 XJ That will tell you if the leak is in the largerSOURCE line. This has been a problem for I have been trying to locate a practical guide to the locations of various vacuum hoses and related parts in my 2002 WJ 4. Another common failure if the ldp ( leak detection pump) the filter that connects to the ldp pump gets full of dirt. For about two years I have had this coolant leak from the coolant temp sensor. I have a 2006 Sport. The vacuum line was cracked on the cruise control canister located under the battery Interesting situation with my WJ 2002 wj base model, no dual climate hvac, 167k on the clock. You may 1. It will cause a hissing sound. Filling the fuel tank with the engine running could I was admittedly frustrated after several attempts to find a vacuum leak under the hood of my '91 XJ. 3L, 5-spd, traded YJ for it '89 2004 Jeep WJ 4. qtvk rmswd xntn jzsd sfehmg xuhuij xvda akpko lpwpmi mvxvkm dohceto nny prxv nohi nsrler