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Villager/Quest Knock Sensor

75 messages,  Last post on Oct 25, 2009 at 6:23 PM

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What is this discussion about? Mercury Villager, Auto Repair, Electrical, Engine, Fuel System, Van

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#68 of 75 Re: 1999 Villager LOOSING Power [sickandtired] by svess6652 May 22, 2009 (8:43 pm)
Replying to: sickandtired (Oct 30, 2006 2:38 pm) Ours was the fuel injectors?
#69 of 75 Re: idle trouble [radennis] by efitzgerald May 25, 2009 (4:18 am)
Replying to: radennis (May 22, 2009 3:58 pm) May i suggest reading back 2 years worth of comments, there is a differance between symptoms and causes. Villagers and Quests (older ones) are nortorius for bad distributors as they age. Read past posts.
#70 of 75 1999 Mercury Villager-Knock Sensor Code... by joeallan Jun 04, 2009 (9:14 am)
Hi All,   We are having troubles with our 1999 Mercury Villager. It hesitates and bogs at acceleration, idles roughly while in gear and sometimes dies at intersections, and when in park has overall intermittent high idle. My husband has tested the KS sub-harness and believes that it is running at too high of voltage according to previous posts. The van is also using more fuel than it should. It is running a Knock Sensor/Circuit Fault code, which we have had cleared three times to check for reliability of the code. We are aware that the Knock Sensor code most often is not the actual problem.   We have change the O2 sensors (both), the air filter, the fuel filter, the distributor, the rotor and cap, and the spark plugs and wires, if I'm not forgetting anything. We purchased the Haynes book, but nothing is really standing out right now as to the main issue could be.   Right now we are considering checking grounds off of the computer, but are not sure where they would be located. We are also considering changing the negative battery cable. Any other leads or suggestions would be greatly appreciated! Replies to this message: radennis (Jun 04, 2009 2:04 pm)
#71 of 75 Re: 1999 Mercury Villager-Knock Sensor Code... [joeallan] by radennis Jun 04, 2009 (2:04 pm)
Replying to: joeallan (Jun 04, 2009 9:14 am) we have the same van for the last three months we've had very similar problems had a knock sensor code also. ours never died but started acting like it was'nt going to start would never do the surging or rough idle when we got to the shop almost as if it new what we were trying to do. we did how ever find out that it was the EGR valve. that it was sticking wide open when it got warm. the dealer no longer makes this part they do have some like at auto zone for about $167.00 we also changed fuel filter,plugs,plug wires, cleaned the throttle body and replaced the Throttle position sensor. the guy thats going to fix the egr valve said it could have also been the fuel injectors or the fuel injectors needed to be cleaned and o rings replaced this is not the case with our van but that was his first possible diagnosis. if you go to church you might find someone with a mechanic shop or some one who can help. our church has a car ministry with mechanics that often do some side work which is a blessing. hope this helps
#72 of 75 Re: 1999 Mercury Villager Knock Sensor [mlangali] by snorkelbobby Jun 21, 2009 (9:31 pm)
Replying to: mlangali (Oct 29, 2006 12:27 pm) Do not ever replace a knock sensor. They can not cause any driveability problems. Other things cause the sesnor code to set Replies to this message: amb7 (Jul 07, 2009 6:19 pm)
#73 of 75 Re: 1999 Mercury Villager Knock Sensor [snorkelbobby] by amb7 Jul 07, 2009 (6:19 pm)
Replying to: snorkelbobby (Jun 21, 2009 9:31 pm) snorkelbobby can you help or anyone else? I just purchased a knock sensor at Checkers for my 2000 Mercury Villager. I started having problems yesterday when the traffic was backed up. Lots of stalling, the van dieing on me, lots of hiccups and etc. I immed drove it to Goodyear and they ran a diagnostic and told me it was the knock sensor and that the intake manifold needs to be resealed, and a new valve cover gasket? I drove it again today and the van died six times and took a few attempts to start just driving a 1/4 mile. In between all of that I had a lot of close calls with it dieing. Like I said this all really began yesterday but for the past couple of weeks we would have a slight hestitation every now and then when driving.
#74 of 75 stalls after it warms up by ttiede Aug 27, 2009 (12:09 pm)
k so my van is the 95 villeger. it boggs out like it is running out of gas with a full tank all of this happens at normal running temp and some time i can get it to start back up while im moveing but more often than not it comepletely dies and when trying to start it will start then bog out shortly after it is giving me a big head ache i would like to take it to the salt flats to blow it ski high any suggetions?
#75 of 75 Re: 1999 Mercury Villager Knock Sensor [mlangali] by andyheb02 Oct 25, 2009 (6:23 pm)
Replying to: mlangali (Oct 29, 2006 12:27 pm) Hey guys, I had the exact same issue with my '99 Villager. It would run fine at cold start up but as soon as it would warm up a bit, it would misfire, and chug at idle. It would smooth out somewhat under acceleration but the problem was always there. I tried a new cap, rotor, plugs, cleaned the optical sensor inside the distributor, new EGR valve, a couple of fuel injectors and it didn't help. At times, it would generate a check engine light (random miltiple misfire code) and when I would clear it, sometimes it wouldn't even generate a code for a while, however it would akways run rough. Anyway, it turned out to be the distributor! I pulled out the distributor and there were shavings all over the gear. I did some research and apparently they are known for failing. The heat tends to take a toll on the coil and knock sensor (which are both inside the distributor) and combined with the gear wear, it can cause a misfire code due to excess play. I put in a new distributor and the problem is finally gone and It runs good now! This problem plagued me for a couple of years and even a couple of dealerships couldn't find the problem. Buy one on eBay, because they are not cheap. It sounds like that is your problem as well.

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