Ford - Explorer :: Getting Code P1405 Large Vacuum Leak And Alternating Replace Gas Cap
Got 2006 Explorer back fron trans rebuild and probably unrelated but started getting P1405 (Large vacuum leak) and alternating "replace gas cap" errors. When I installed a new gas cap, error went from large vacuum leak -which I checked for on engine and found none using smoke test- to loose gas cap. So next, I changed the emission system valve which is right up front on rt. side of engine looking into engine bay. Now, error has returned to large vacuum leak. So new gas cap and valve. Error does not come back immediately after clearing. Takes about a week and then either get SES light and large vacuum leak error or just picture of gas cap on dash error. Note that when I remove gas cap, I no longer hear the "whooosh" of releasing a vacuum. Assume now it is in back by spare tire where I need to be looking. I note on emission valve that there is a schrader valve for testing vacuum....
View 6 RepliesFord Ranger / B-Series :: Occasional CEL Indicating Code PO442 - Small Leak Detected?
2001 Ranger-4 Liter-169,000 Odometer Miles ... Over the past year I would get an occasional CEL indicating PO442 Leak Detected (small leak). I would simply erase it. Now it's occurring more frequently at approximately 300 odometer miles.
There must be lots a places for a small leak to develop. But, I am thinking that there might be one or two places that are somewhat common.
Ford Aerostar :: Vacuum Leak - Small Crack In The Hose
Searched several times over the winter. Finally tore each hose out one at a time and went carefully over it before returning or replacing.
Turned out to be the long formed semi flexible vac. hose that runs from the gas fumes purge tank control valve group to the throttle body across the top of the engine. Ripped it out, on one of the bends was a small crack all the way thru, apparently would open up wide when stressed and cause problems. Mainly on hill pulls or hard acceleration but not every time. NO hair left after this one.
Replaced, deleted the codes. Runs like a top.
Still amazed at how much power these 4.0L V6 OHV Fords have from low speed on an uphill on ramp drag race.
stirs the old hot rodder blood.
Ford - Explorer :: 2006 4.0 SOHC - Small Vacuum Leak
I'm having a little bit of trouble finding the cause of a minor problem on my 06 Explorer with the 4.0 V6 engine. When the engine is running cold at idle, it runs a bit rough and idle speed is high as well. When fully warm, the engine runs and idles fine. I hooked up a scan tool and there are no pending or stored codes. The live data looks ok except the long term fuel trim which is at about +10% on both banks during idle, indicating a lean condition. Short term fuel is right around zero. The MAF and TPS values seem to respond fine when applying steady throttle.
So I assume there must be a fairly small vacuum leak somewhere that the PCM is able to compensate for since the long term is only at 10. I didn't see anything obviously wrong, the vacuum lines look fine along the passenger side near the firewall. I sprayed a bit of throttle cleaner along the hoses, intake manifold and gasket area, but could not spot any vacuum leaks. Any other common areas to check for leaks on the 4.0 V6? Perhaps there is something I am missing?
Ford - Explorer :: 2003 - Vacuum Leak And CEL On - Air Intake Gasket Replacement
I have a 2003 Explorer with the 4.0 K motor. It has a vacuum leak and the check engine light will come on from time to time. My work buddy has a high end computer and it showed that the driver side bank was running lean. The computer showed the O2 sensors to be working fine, and I replaced the PCV valve. All other vacuum line appear to be in good condition and I tried the spray test with the break cleaner with the motor running. This is leading me to believe the air intake gaskets where due for replacement. Here is my problem, I can not get the last bolt out of the plenum. The one on the driver side up against the fire wall. I tried to remove the cowl in order to get a straight shot at it but I can not get the seem seal to break free.
View 4 RepliesFord - Explorer :: 2002 - Oil Cooler - Coolant Leak On One Of External Line / Hose Bib Elbow
The oil cooler mounted above the oil filter on my 2002 Explorer 4.0L V6 has a major coolant leak on one of the external line/hose bib elbow. I've googled Explorer oil coolers and I've searched this forum with no luck. Can you bypass it without any problems mechanically or electronically (throwing error codes)? I have already purchased a new cooler and the lower oil cooler line. I'm just wondering if I should return the parts and bypass it. If I go through the replacement, I noticed the cooler is mounted by a pass through threaded tube with a hex head molded into it for fastening/loosening purposes. What size hex head socket it is?
View 12 RepliesFord F-150 - 1997-2003 :: Code P0171 And P0174 - Vacuum Leak
I had my fuel system cleaned by the dealership last weekend and I feel like I gained 50hp+ ... Now its throwing a P0171 about a week and a half later. My computer also listed P0174 under the pending codes or whatever the section was.
2003 F150 5.4L ... I cleaned the MAF sensor a couple weeks back which stopped a rough idle and I have put some 300+ miles on it since. about 200 miles since the fuel system cleaning.
I got home and popped the hood and it sounded like a vacuum cleaner. Guess it is a vacuum leak. I might need to stop using this ford house. I swear this is the second time there was a vacuum leak(I think, first time they said it was spark gap issue). I'll be heading back in the morning now.
Ford F-150 - 1997-2003 :: Vacuum Leak On PCV Hosing - P1131 Error Code
I'm getting the p1131 error on my 2000 xlt f150 5.4l. I know it's usually a vacuum leak on the pcv hosing, which I did have at the back and replaced as well as other softer joining sections(3 to be exact lol), but I'm still getting this error. Changed out my plugs and cops(as they needed it) and the back two plugs on both bank 1 and 2(plugs 4&8) were both white! Since this is an obvious indication of a lean burning cylinder can I make the assumption my most likely problem is dirty fuel injectors on those cylinders?
View 13 RepliesFord Super Duty (1999-2016) :: Fault Code P0442 (EVAP) Be Caused By ESOF Vacuum Leak?
I have 2 issues and wonder if they are related. I don't have a CEL but I'm getting a P0442 DTC with my code reader - EVAP system leak detected
Also, my ESOF doesn't work. The hubs will lock manually. Can this be related?
I've already cleared the code and it came back. My ESOF hasn't been working for a while but I just haven't had the time or motivation to look into it until now.
I tried the HVAC Test and there may be a slow leak in the system. I can get the vents to switch from defrost to face vents but it switches halfway back to defrost, both are on at the same time for 20 seconds, then it recovers and goes back to the face vents.
My 4wd relays seem to work as well.
Passat (B5) :: 2000 1.8L - Fault Code / Vacuum Leak Diagnosis
I have a 2000 1.8L that's great. I have seen a reference to Vacuum leak diagnosis. I have a check engine light on and it has been for a while. the car still runs well and gets fine gas mileage. Coed is 1136. Is there a specific hose I should check?
View 7 RepliesGolf IV / Jetta IV :: Fixing Code P1136 - Vacuum Leak?
As title states, I scanned my gti and got P0420 (nothing new here) and P1136. I did some searching and looks like vacuum leak can cause this, however I also read that it'll affect my idle. I replaced MAF 2 years ago with a brand new OEM one, my idle is NOT rough, at all.
View 1 RepliesChrysler - Cirrus :: 2000 - Code P0303 And P0305 / Vacuum Leak
I own a cirrus 2000 which lately have been giving me trouble. I took it to a mechanic for tune up and ended up having a lot of issues. At the moment I am having a lot of rattle or hard driving. The car shakes alot and recently I took it for a diagnostic and the result was P0303 and P0305 and vacuum leak. What causes this problem and how can I get it fixed?
View 5 RepliesPassat (B5) :: 2000 1.8T Vacuum Leak On Cold Start - Emissions Workshop 1 Code Flashing
I have a 2000 Passat 1.8T. When I start it up in the morning I hear a loud obnoxious noise like a vacuum leak from the engine compartment. It lasts for about 1.5 minutes then runs normally. After about a minute it starts up again and only last for about 7 seconds...ish. When I drive it afterwards, less that a half block or so, the CEL light goes on after 1 beep. Also, at that time I get a messages from the instrument panel that says "Emissions Workshop 1". I've read that it could be a simple damaged vacuum hose to the secondary air pump. Definitely a huge price difference to repair.
This morning is was colder outside than usual and the dash kept beeping and flashing the "Emissions Workshop 1" code intermittently.
Ford Ranger / B-Series :: Vacuum Hose Diagram?
Where I might be able to find a vacuum hose routing diagram for a 2.9? I have searched high and low but with no luck.
View 14 RepliesFord Escape / Hybrid :: 2001 V6 - Emergency Vacuum Hose Identification
I simply cannot find a proper and complete vacuum diagram for this 2001 Escape V6. (The sticker has been removed from the car.)
The car is hard to start - very hard, but once warm it manages to run ok. There vacuum hose way down low, on the back of the block and under the starter, impossible to see but if my fingers aren't lying it's very near the knock sensor? This hose is rotten and disconnected at the top - it's just laying there kinda under the throttle body.
For the life of me I cannot a) identify what the hose goes to and b) figure out where to plug it back in. There are no empty ports I can find anywhere within reach of the floppy end of the hose.
Ford Wiring/Electrical :: Revs At 1900 RPM And When Unplug Vacuum Hose To Map Sensor It Idles About 700 RPM
I have a idle problem that happens on and off. with my 89 f250 351, it revs at 1900 rpm and when I unplug the vacuum hose to the map sensor it idles about 700 rpm. I've already replaced the map sensor and it does the same thing. i cant find any vacuum leaks anywhere and when i unplug the connector to the IAC nothing happens it continues to rev high.
View 2 RepliesFord Ranger / B-Series :: Water Temp Sensor Leaking / Missing Vacuum Hose
Was fixing leaking water temp sensor today and noticed the nipple under oil fill cap didn't have hose on it. After further investigation I found open spot on air intake hose with nothing in it. Both places seem to have vacuum, what goes here. BTW it is a 1999 Ranger ext cab with 3.0 flex engine and auto trans. Will try to get picture n post also...
View 8 RepliesPassat (B6) :: Hissing Sound Coming From Driver Side Like Vacuum Hose Is Off
Ok just so I know what the dealer may do to fix it....I have a weird hissing sound coming from the driver side like a vacuum hose is off or something...but when I apply the brakes it goes away...I let go and it comes back...when I shut the car off as well it stays hissing until I hit the brakes again or it just quiets down... What this may be?
View 1 RepliesFord - Explorer :: Rear AC Suction Hose Not Cold
Rear ac suction hose not cold, need diagnosing...
View 4 Replies