Question about 1998 Mercury Mountaineer

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Intermittent start on Mountaineer

This vehicle is a nightmare. I recently had all of the jackshafts and balance shafts replaced in this 4.0 SOHC engine which was previously causing an increased ticking/pinging noise.While this is now fixed I am having a repeated no start issue. The vehicle will start and after a couple minutes of idle and a shutoff will not start again.The engine light has not come on. I have reset the fuel shutoff valve. There is plenty of pressure to the fuel rail as I tested this and also checked oil pressure.The fuel pump is good. I have good spark to all of my plugs and have replaced those as well.The computer is saying that none of the oxygen sensors are reading. I am thinking that there is something wrong in one of the 02 sensors as there are 2 upstream and 2 downstream and I don't know if it can not complete the right circuit and reads that all are bad. I can't find anyone else who is having this problem so any kind of insight would be helpful. I do not want to replace all 4 of these sensors if I don't absolutely have to. Please help!

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5 Suggested Answers

  • 195 Answers

SOURCE: How many upstream and downstream

Hello;
Depending on the engine, there will usually be four o2 sensors. They are easy to identify when you get under the car. Follow the exhaust tube from the exhaust manifold down the pipes. You will see a sensor with leads on it screwed into the pipe.
Thanks;
Rich
RPM Northwest

Posted on Apr 27, 2009

dttech
  • 4803 Answers

SOURCE: I have a 93 mercury topaz 4cyl 2.3L that stalls

It sounds to me like you replaced everything but the most likely cause of a stall while driving...The crank sensor.

Posted on Oct 11, 2009

  • 4369 Answers

SOURCE: Have a code on my Mercury Mountaineer 2003. 02

I would agree with that diagnosis. What was the code number?
P0xxx

Posted on Jul 10, 2010

Testimonial: "Great response.Thanks again."

  • 1 Answer

SOURCE: where are the o2 sensors and are they upstream or

is the O2 sinsor the same as the oxagen sinsor?

Posted on Jun 20, 2011

Mr BrokRench
  • 1623 Answers

SOURCE: 1993 mercury villager check engine on with code 32

After awhile these idle screws don't have a lot of effect, the throttle body & injectors are also probably dirty. The 1.5 turns out from a soft seat is a starting point. Go another 1 to 1.5 turns out to find the sweet spot. Pour a can of Seafoam in with about 1/2 tank of gasoline. That will help clean the injectors & combustion chambers. Clean the throttle body with throttle body cleaner, make sure there is no carbon around the edges of the butterfly and where it seats.
The knocking on starts is most likely from worn bearings. It will knock until oil pressure builds up & is circulating through the journals. I hope this helps.

Posted on Sep 24, 2011

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Spark plug wire dipgram


2000 Mercury Mountaineer 4.0 liter V-6 SOHC VIN "E" and 4.0 liter SOHC V-6 VIN "X" and 4.0 liter SOHC V-6 VIN "K"

Firing Order: 1-4-2-5-3-6


2000 Mercury Mountaineer 5.0 liter SOHC V-8 VIN "P"

Firing Order: 1-3-7-2-6-5-4-8


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Thank you for using Fixya, and have a nice day.

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2001 ford ranger 4.0 engine timing chain replacement


Hi Josiah:
According with the repair guide...4.0L Engine
  1. Before servicing the vehicle, refer to the Precautions section.
  2. Drain the engine oil.
  3. Remove or disconnect the following:
    Negative battery cable Engine from the vehicle Oil pan Engine front cover Cylinder heads
  4. Lock the jackshaft tensioner by installing a pin.
    Jackshaft sprocket and chain assembly Left front cassette retaining bolt Cassette chain and tensioner assembly Rear jackshaft plug from the engine Right rear cassette retaining bolt and spacer Right rear cassette chain and tensioner Timing chain (s)

12_20_2011_4_41_36_pm.gif

Fig. Remove the jackshaft sprocket-4.0L SOHC Engine 2000-2001
Zooming link for Remove the jackshaft sprocket-4.0L SOHC Engine 2000-2001

To install:

  1. Install or connect the following:
    Timing chain(s) Right rear cassette chain, tensioner and sprocket Jackshaft sprocket and chain on the engine and remove the tensioner pin
  2. Torque the jackshaft sprocket bolt in 2 stages:
    1. 32-35 ft. lbs. (43-47 Nm).
    2. Turn an additional 65 degrees.
  3. Install or connect the following:
    Cylinder heads Front cover Oil pan Engine to the vehicle Negative battery cable
  4. Fill the engine with clean oil.
  5. Start the vehicle, check for leaks and repair if necessary.

  1. Before servicing the vehicle, refer to the Precautions section.
  2. With the vehicle in neutral, position it on a hoist.
  3. Remove the intake manifold.
  4. Remove the fuel supply manifold.
  5. Remove the accessory drive belt.
  6. Remove the thermostat housing.
  7. Remove the roller followers.
    NOTE You must retime the LH and RH camshafts when either camshaft is disturbed. Turn the crankshaft clockwise to position the number one cylinder at top dead center (TDC).

    NOTE The special tool must be installed on the damper and should contact the engine block to position the engine at TDC.
  8. Install the special tool.
    NOTE The right-hand camshaft sprocket bolt is a left-hand threaded bolt.
    NOTE If necessary, use camshaft gear torque adapter to loosen the camshaft sprocket bolt.


Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

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Will a d15b7 water pump be compatiable with a d16y8 water pump


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CRXL4 - 1.5L 1493cc type D15B2 - MFI GAS SOHC
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1 Answer

Setting of timing chains


Get Ford timing tool kit, part = otc-6488 (For about $119 USD on eBay)

4 timing chains (3 front including the optional balance shaft chain + 1 back)

2 cam guides (1 front + 1 back)

2 oil tensioners (1 front + 1 back)

1 jackshaft tensioner (1 front)

1 jackshaft guide/cassette (1 front)

1 balance shaft tensioner (1 front) (will probably be ok, so dont replace it)

1 balance shaft guide (1 front) (will probably be ok, so dont replace it)

new sprockets + bolts + gaskets etc.

new spark plugs + throttle body cleaner + lithium grease spray + oil change

head gaskets


some of these parts (the front stuff) can be obtained as a primary timing chain rattle noise kit Part# = 2u3e-6d256-** ab for 4*4 & bb for 2*4.

The kits also have later part numbers for us$ 76 @ http://www.fordpartsonline.com


My parts order (without the balance shaft stuff) was:

$76.04 KIT-TENSIONER TIMING 2u3e-6d256-ab

$47.93 Engine, Camshaft and timing, Timing chain, TIMING CHAIN, Explorer, Mountaineer, Rear - 4.0L SOHC - 4.0L SOHC

$57.36 Engine, Camshaft and timing, Chain guide, CHAIN GUIDE, Explorer, Mountaineer, Jackshaft To Cam - 4.0L SOHC - 4.0L SOHC

$103.22 Engine, Overhaul gasket set, OVERHAUL GASKET SET, Explorer, Mountaineer, Upper (Valve Grind) - 4.0L SOHC - 4.0L SOHC

$28.93 Engine, Camshaft and timing, Tensioner, TENSIONER, Explorer, Mountaineer, Upper - 4.0L SOHC - 4.0L SOHC

Its worth mentioning that this procedure is not enjoyable at all and should be undertaken with at least 8 full days to completion (I recon you could do it in half the time the second time).

It is basically on entire engine re-build with both heads off and the engine out of the vehicle.

It is not possible to do the rear chain or sprocket with the engine in the car as the flywheel needs to come off + at least 1 head, but it is possible to do the front primary chain and or front cam chain with the engine in the car.

You will be a ford exploder and timing expert after you do this - the main reason should be the love of your American built vehicle. Its a solid car - except for the plastic guides!

Disclaimer Note: This is how i successfully did the job, but i am not a ford mechanic and don't hold me responsible if this does not work for you.
Timing Overview

A Small Sprocket on the crank turns a larger (2 to 1 ratio) jackshaft sprocket that is in turn connected front & back to the 2 camshafts.

Thus a 360o turn of the crank will turn both the camshafts 180o.

Firing order is 1-4 2-5 3-6, Right side numbers 1,2,3. Left Side = 4,5,6.

At TDC pistons 1 & 5 are fully raised, thus 1 is about to spark & 5 is evacuated.

The engine will turn freely (no piston to valve contact) with the cams 180o out, it will even run (roughly) with 1 out 180o, any other settings may cause major damage to the valves.

The 2 cam shafts come with timing markings, "yes" real timing marks that anyone can use (even without special tools) to ensure correct timing.

The way to time it is to ensure both the off centre cam shaft slits are level/flat with the head.

With the engine at TDC both the cams need to have the off centre slot in the same position either up and level or down and level.

It is super critical that both the camshafts are 100% in sink with each other, i.e. not a few degrees off, the engine computer can compensate for crank timing but not engineering failure.

Be warned the camshafts can turn easily fast & hard by themselves as a few springs are compressed at TDC, I got my finger jammed and its still healing + if the engine is not at TDC you may damage a valve.

Now heres the hard thing that you will need special tools for - if you need to change the timing, you will need to be able to undo the cam sprocket bolt on both cams & these are done up real tight.

There is a tool that you attach that has 2 pencil thick shafts that fit into the sprocket and prevent it from turning - then you need to put about 90Nm of force on the bolt (remember the rear one if LHT)

For the $money$, its well worth getting yourself the tool kit - it will save you hours in the long run. Search eBay for otc-6488 should be US $119 - then sell them again for say $100.

There is also a tool version of the oil tensioner in the kit that screws right in and puts the correct amount of force on the chain + guide, to enable you to do up the cam bolt with the chain and sprocket in the right spot on the cam.


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1 Answer

Firing diagram for a 1999 mountainer


For the 1999 Mercury Mountaineer:
I do not know if you have the 4.0L SOHC V6 or the 5.0L SOHC V8; however I have included both below:

For the 4.0L SOHC V6:
Firing Order:

1-4-2-5-3-6
Cylinders:
........(back)........
|...3...|.......|...6...|
|...2...|.......|...5...|
|...1...|.......|...4...|
.........(front)
Ignition Coil Connections:
..(back)
1...2...3
5...6...4- This is correct!
..(front)

For the 5.0L SOHC V8:
Firing Order:
1-3-7-2-6-5-4-8
Cylinders:
.......(back).......
|..4..|.........|..8..|
|..3..|.........|..7..|
|..2..|.........|..6..|
|..1..|.........|..5..|
........(front)
Ignition Coil Connections:
.........(back).........
|..4..7..|.....|..3..5..|
|..8..2..|.....|..6..1..|
..........(front)

Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!

Apr 18, 2010 | 1999 Mercury Mountaineer

1 Answer

97 explorer - sohc engine how can i tell if the


the dots line up at top dead center(point to each other) and you wound have a harmonic balancer.

Dec 06, 2009 | 1998 Ford Explorer

1 Answer

Can anyone help with an intermittent starting issue with a '98 mercury mountaineer?


If the motor turns over, but not start. Have the "crank shaft sensor" checked/replaced Ford part# 184768 $27.98 parts $230.00 labor). I chased this problem for several years. The crank sensor finally failed completely and the mechanic was able to find the problem.
Good luck

Jan 12, 2009 | 1998 Mercury Mountaineer

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