04 Navi wont accelerate past 60-65mph

[BDog21]

Hey guys, ive got a 2004 Navigator Ultimate with just over 120k miles and im having a few issues with it. First off, the transmisson has really delayed, hard shifts most of the time. Ive done a little digging around online and am starting to suspect the shift solenoids are sticking and need replaced, as that seems to be a fairly common problem on these 4R100 transmssions. Is there an easy way to test weather or not its the solenoids?

My 2nd problem, as the title says, It will not accelerate above about 60-65mph. I not sure if this is related to the transmission problem, or if its something with the engine i cant really tell. But once i get up to that speed, it will be at about 3500-4000rpm and just sounds like its giving it everything its got, but just will not accelerate. This is even more pronounced when going up a hill.

Some things i have done so far is replaced the spark plugs, cleaned the MAF sensor with specific MAF sensor cleaner, checked transmission fluid it seems to be at the correct level and looks pretty new its not dark or burnt at all. Any ideas what could be the cause of these 2 problems?

 

[bbf2530]

Hey guys, ive got a 2004 Navigator Ultimate with just over 120k miles and im having a few issues with it. First off, the transmisson has really delayed, hard shifts most of the time. Ive done a little digging around online and am starting to suspect the shift solenoids are sticking and need replaced, as that seems to be a fairly common problem on these 4R100 transmssions. Is there an easy way to test weather or not its the solenoids?

My 2nd problem, as the title says, It will not accelerate above about 60-65mph. I not sure if this is related to the transmission problem, or if its something with the engine i cant really tell. But once i get up to that speed, it will be at about 3500-4000rpm and just sounds like its giving it everything its got, but just will not accelerate. This is even more pronounced when going up a hill.

Some things i have done so far is replaced the spark plugs, cleaned the MAF sensor with specific MAF sensor cleaner, checked transmission fluid it seems to be at the correct level and looks pretty new its not dark or burnt at all. Any ideas what could be the cause of these 2 problems?

Hi BD. In a situation like this, having the car checked out by a good shop/tech would probably be your best course of action. Also, is the tranmission running through all the gears?

Blind Internet guessing would say that if you are turning 3,500-4,000 rpm at 60-65 mph (more specific numbers would help), it would seem the transmission is not shifting into high gears/overdrive.

However, if you want to try to fix this yourself, this is what I would recommend: First, while I realize you stated that you "...checked transmission fluid it seems to be at the correct level and looks pretty new its not dark or burnt at all", you do not mention if it has ever been changed.

So...How long have you owned this vehicle? Has the transmission fluid ever been changed? If you do not know... or if you know it has never been changed, you might want to start with a proper, professional flush/fill of the transmission fluid.

Try that first, then we can advise from there.

Let us know how you make out and good luck.

 

[BDog21]

Hi BD. In a situation like this, having the car checked out by a good shop/tech would probably be your best course of action. Also, is the tranmission running through all the gears?

Blind Internet guessing would say that if you are turning 3,500-4,000 rpm at 60-65 mph (more specific numbers would help), it would seem the transmission is not shifting into high gears/overdrive.

However, if you want to try to fix this yourself, this is what I would recommend: First, while I realize you stated that you "...checked transmission fluid it seems to be at the correct level and looks pretty new its not dark or burnt at all", you do not mention if it has ever been changed.

So...How long have you owned this vehicle? Has the transmission fluid ever been changed? If you do not know... or if you know it has never been changed, you might want to start with a proper, professional flush/fill of the transmission fluid.

Try that first, then we can advise from there.

Let us know how you make out and good luck.

I just got this car about a month ago,and when. I checked the trans fluid while test driving it, it looked like brand new fluid. And yes it seems to be going through all gears. Usually when it's working really hard like that I'm pretty sure it always downshifts, from 4 to 3 because I'm giving it gas trying to accelerate, and that's when it won't accelerate.

I don't have a check engine light, but I just checked codes and there's quite a few, most of them related to the instrument cluster. I'll just copy and paste the results on the next post here

 

[BDog21]

===TPM DTC B2477===
Code: B2477 - Module Configuration Failure

Module: Tire Pressure Monitor

Diagnostic Trouble Code details

Module Configuration Failure


===END TPM===

===OBDII DTC ===
Successful DTC reading, no error codes found

Module: On Board Diagnostic II
===END OBDII===

===IC DTC U2235===
Code: U2235 - 4x4 Mode Status Invalid

Module: Instrument Cluster

Diagnostic Trouble Code details

4x4 Mode Status Invalid

Operator Action

Run self test.

All CMDTCs

Fix all relevant DTCs then clear codes and retest.

Note:

DTCs that start with 'U' are faults which occur during module-to-module communication.

Modules should never be replaced based only on a 'U' code. These codes do not always indicate a problem, and can be caused by normal diagnostic functions, carried out on the vehicle.


===END IC===

===IC DTC U1041===
Code: U1041 - Vehicle Speed Data Invalid

Module: Instrument Cluster

Diagnostic Trouble Code details

SCP invalid or missing data for function read vehicle speed


===END IC===

===IC DTC U1059===
Code: U1059 - Transmission Position Data Invalid

Module: Instrument Cluster

Diagnostic Trouble Code details

At some time in the past a corrupt message was received from the PCM. Try clearing the DTC to see if this DTC re occurs. If it does then carefully check the SCP wiring and run the PCM diagnostic.


===END IC===

===IC DTC U2013===
Code: U2013 - The compass module is not responding.

Module: Instrument Cluster

Diagnostic Trouble Code details

The compass module is not responding.

Operator Action

Run self test.

All CMDTCs

Fix all relevant DTCs then clear codes and retest.

Note:

DTCs that start with 'U' are faults which occur during module-to-module communication.

Modules should never be replaced based only on a 'U' code. These codes do not always indicate a problem, and can be caused by normal diagnostic functions, carried out on the vehicle.


===END IC===

===IC DTC B1318===
Code: B1318 - The battery voltage level is too low.

Module: Instrument Cluster

Diagnostic Trouble Code details

The battery voltage level is too low.

Possible causes are:

Battery voltage line - open or short

Blown EPS fuse

Poor battery condition

EPS CM malfunction

Poor connection of each connector

Control Module


===END IC===

===IC DTC B1352===
Code: B1352 - Ignition key in circuit fault

Module: Instrument Cluster

Diagnostic Trouble Code details

Ignition key in circuit fault

--- Possible Causes --------
This DTC can be generated by:

-Open Key-In Ignition Switch circuit
- Battery short Key-In Ignition Switch circuit
- Battery short Ignition Switch RUN/ACCY circuit
- Suspect Ignition Switch
- Suspect Lighting Control Module.


===END IC===

===IC DTC U1262===
Code: U1262 - SCP Data Link Fault

Module: Instrument Cluster

Diagnostic Trouble Code details

SCP Data Link Fault

Operator Action

Run self test.

All CMDTCs

Fix all relevant DTCs then clear codes and retest.

Note:

DTCs that start with 'U' are faults which occur during module-to-module communication.

Modules should never be replaced based only on a 'U' code. These codes do not always indicate a problem, and can be caused by normal diagnostic functions, carried out on the vehicle.


===END IC===

===IC DTC U1950===
Code: U1950 - UBP Communication Bus Fault.

Module: Instrument Cluster

Diagnostic Trouble Code details

UBP Communication Bus Fault.

Operator Action

Run self test.

All CMDTCs

Fix all relevant DTCs then clear codes and retest.

Note:

DTCs that start with 'U' are faults which occur during module-to-module communication.

Modules should never be replaced based only on a 'U' code. These codes do not always indicate a problem, and can be caused by normal diagnostic functions, carried out on the vehicle.


===END IC===

===ABS DTC ===
Successful DTC reading, no error codes found

Module: Antilock braking system
===END ABS===

===PCM DTC P1000===
Code: P1000 - On-Board Diagnostic (OBD) Systems Readiness Test Not Complete

Module: Powertrain Control Module

Diagnostic Trouble Code details

Check of all systems is not complete since last memory clear.

--Possible Causes--
- The vehicle is new from the factory and has not yet been through a complete OBD Drive Cycle.
- The battery or PCM has been disconnected.
- An OBD monitor failure had occurred prior to completion of an OBD Drive Cycle.
- The PCM DTCs have been cleared as part of a service process.

Note: The only way P1000 can be cleared (removed) from memory is when all of the OBD monitors have been successfully completed during normal vehicle operation.

P1000 cannot be cleared from the PCM when: 1. The thermostat is stuck open and a DTC is not generated. 2. There is an open VSS circuit and a DTC is not generated. 3. If the vehicle has a Power Take Off (PTO), the circuit is shorted to VPWR or B+, or the PTO is ON during Self-test.

The purpose of the Diagnostic Trouble Code DTC P1000 is to indicate that not all of the On Board Diagnostics OBD monitors have yet been successfully completed. You may also refer to the OBD Drive Cycle defined under the Powertrain Control/Emission Diagnosis Manual-Diagnostic Methods or the Owner's Manual.

Remember: It is not necessary to remove P1000 from the Powertrain Control Module PCM by driving the vehicle.


===END PCM===

===RCM DTC ===
Successful DTC reading, no error codes found

Module: Restraint Control Module
===END RCM===

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[BDog21]

well today i was on the highway, and it didnt want to accelerate above 55mph, then the temp gauge went all the way up and it said "decreased engine power" on the dash info center. so i immediately pulled over, and my coolant reservior was completely full. i vented off the pressure and then there was hardly anything in the reservior. when i squeezed the upper radiator hose there was no pressure in it, which makes me think the thermostat isnt opening up. but i dont think this is the same reason as it usually wont go above ~60mph cuz ususally it wont accelerate above that but the temp gauge stays where its supposed to be no matter how long i drive it like that. im thinking this is a seperate issue and im hoping its just a thermostat or radiator cap, cuz also the cap is not venting off pressure like it should, so im gonna start with those 2 things and see if that fixes the overheating issue

 

[BDog21]

Anybody have any ideas what would be causing these problems?or what I should check/replace next?

 

[bbf2530]

Anybody have any ideas what would be causing these problems?or what I should check/replace next?

Hi BD. So if I understand correctly, you bought the Navigator a month ago, and it had ~120,00 miles on it. You "checked" the transmission fluid befoe you purcahsed, and "it looked new". However, you do not know if/when it was ever changed by the previous owner? Correct?

I don't want to leave you hanging, but I do not think there is much I can do to help.

I truly believe you need a shop/tech to find the problem here. Perhaps one of the Lincoln Forums techs will jump in and be able to diagnose this and help you over the Internet. Unfortunately, it may be more likely you will need to take your vehicle to a shop or tech that you can trust. Otherwise, this will be one of those throwing-parts-at-an-ongoing-problem situations. And that can be more costly and far more frustrating than having a shop/tech fix it right.

Sorry I could not help more. Keep us updated and good luck.

 

[BDog21]

Hi BD. So if I understand correctly, you bought the Navigator a month ago, and it had ~120,00 miles on it. You "checked" the transmission fluid befoe you purcahsed, and "it looked new". However, you do not know if/when it was ever changed by the previous owner? Correct?

I don't want to leave you hanging, but I do not think there is much I can do to help.

I truly believe you need a shop/tech to find the problem here. Perhaps one of the Lincoln Forums techs will jump in and be able to diagnose this and help you over the Internet. Unfortunately, it may be more likely you will need to take your vehicle to a shop or tech that you can trust. Otherwise, this will be one of those throwing-parts-at-an-ongoing-problem situations. And that can be more costly and far more frustrating than having a shop/tech fix it right.

Sorry I could not help more. Keep us updated and good luck.

i appreciate your replies. I actually went to school for auto repair i have an associates degree in automotive technology but i have not been working in the field. Im just having a hell of a time diagnosing this one. But yes, the trans fluid looked brand new, like it had just been flushed right before i test drove it.

a little more info i guess, this problem is much more pronounced when going up a hill and trying to accelerate. the transmission will shift into all 4 gears, and when i come to a hill , it does downshift like it should, but thats when it basically just raps out and sputters when trying to accelerate, at about 3500-4000 rpm. after it sputters for a little while it will ding at me and flash the check engine light, i got a code for a bank 1 too rich, so i cleared it and drove it for a few days (while the problem still persists) and finally decide to take it up to speed again, same outcome except this time it throws a bank 2 too lean code. ive also somewhwer in there got a random cylinder misfire code, but it doesnt come back very often, if it all. if drive it normal and dont let it sputter when its trying to accelerate it doesnt give me any codes. kinda stumped here

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[BDog21]

oh and i also found out hooking the ford scan tool to it, the IC computer says that this vehicle has 198k miles, not the 120k that the dash says, or that the dealer said it had