Won't climb hill after it gets hot

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ciakow

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Hi guys,

This is quite an old post, but I have the same problems with my ´94 FSB XLT. Engine has been overhauled (from 85-92 psi to 170) tranny redone (not the torque converter).

Codes: doesnt give any, but neither when I pull the MAF (most sensors redone). On the dyno it gives me 209.9HP and 475Nm. (like new and better than new).

On the planes it shifts as smooth as butter (still a lot slower than my ´82 Bronco) but when it gets hot, it will hardly climb a hill. Any hill 4%, 5%, etc. Only if I really hit the accelerator will she shift back and rev like crazy (nothing really happens) and shifts up just to fall back again. 20-25Mph... Getting overtaking by freaking 1liter sowing machines with 4 people in them! (doing 7.8 miles to the gallon)

I´ve changed almost everything and have no clue what to do next: Torque converter?

The dyno was when the car wasn´t really hot but there is a wait-time so no way I can try it when it´s really hot.

Oh yeah: original diff, 32" 70% street tires.

Anyone?

Thanks in advance,

Jaco

P.S: Really love her, but it´s getting to a point where it´s so embarassing going to the airport or just to friends (uphill) that I´ve recently considered giving her up...

 

miesk5

96 Bronco 5.0
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Yo,

In code test, do you see a 111 pass code?

or Scan Tool Won't Initiate Self-Test Due to Poor Grounds, Corroded Wiring, etc.

by Jeremy M (Big '92, jermil01)

poor-ground.jpg

***

Diagnostic Routines Symptom Flow Charts — Chart 13 from 94 PCED BY FORD

Symptom

Lack/Loss of Power

Acceleration

Cruise

Look at first block in upper left

http://www.thedieselstop.com/faq/9497faq/maint/vra/images/a16280b.gif

Check vacuum lines and vacuum operated components.. see my vacuum leak test in post #20 @ http://broncozone.com/topic/23994-90-58l-getting-continuous-code-33-and-running-code-44/?p=125535

Is the overdrive on/off switch led light blinking?

Any transmission fluid leaks from vent at top or around torque converter dust plug area of the E4OD?

Fluid level ok? Is it red and no burnt toast aroma?

Adjust fluid to proper level

Perform torque converter operation test.

http://www.diesel-dave.com/vehic/manual/stj/stj71a21.htm

 
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ciakow

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Hi all,

Thanks for your replies. It's been giving some codes every now and then, but nothing in particular that could explain it.

After changing discs, tq converter, solenoid (2x) etc. I've found a friend willing to lend me his E40D. And all problems are gone!

Transmission was connected with only 2 (!!) bolds (bolts?). The mechanic clearly was getting fed up with my car.

Looking at the transmission, the (< 5K km) discs were burnt. the oil was shot (less than 1K) so clearly something is wrong that they can't seem to fix.

Any ideas? (Going up quite steep hills without a problem, do have to get it into low gearing, but that is to be expected with hills this steep (about 24%!!)

Regards and happy NY!

Jaco

 

miesk5

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Yo Jaco,

Can you post the codes found?

Without the codes, this is by Ford;

Poor Vehicle Performance

Possible Component Reference/Action

253 — ELECTRICAL ROUTINE

Powertrain Control System

Perform torque converter operation test. See below.

****

Electrical inputs/outputs, vehicle wiring harnesses, powertrain control module, other engine related items, torque converter clutch solenoid, throttle position sensor, transmission range (TR) sensor, transmission fluid temperature sensor****

Did the codes found relate to any of the above?****

Throttle Position Sensor (TPS) Test by Ryan M @ http://www.fuelinjectedford.com/page30.html

Run On-Board Diagnostics. ***miesk5 note, this is the code test***...Refer to Powertrain Control/Emissions Diagnosis Manual for diagnosis. Perform Service Manual Pinpoint Tests B, C and D using Rotunda Transmission Tester 007-00085, Cable and Overlay 007-00107 and the Transmission Range (TR) Sensor Cable "B" (MLPS Manual Lever Position Sensor Tester Cable) 007-00086 or equivalent as outlined in this section. Service as required. Clear codes, road test and rerun On-Board Diagnostics.

353 — HYDRAULIC/MECHANICAL ROUTINE

Shift Linkage (Internal/External) or Cable

Damaged, misadjusted

Inspect for damage. Service as required. Verify linkage adjustment as outlined.

Transmission Shift Control Cable and Bracket

From inside the vehicle, place the gearshift lever (7210) in the DRIVE position (C6) or the OVERDRIVE position (4R70W and E4OD). Hang a three-pound weight on the gearshift lever.

Raise vehicle on a hoist and position suitable safety stands under vehicle.

Remove the shift cable from the transmission lever ball stud.

Pull down the lock tab on the shift cable body.

Position the gearshift lever in the DRIVE position (C6) or the OVERDRIVE position (E4OD). This is three detents from the front-most lever position with the first position counting as one.

Connect the cable end fitting to the transmission lever ball stud.

Push up on the lock tab to lock the cable in the correctly adjusted position.

Remove safety stands and lower vehicle from hoist. Remove the three-pound weight from the gearshift lever.

CAUTION: Under no circumstances should the cable be adjusted in any position other than D (drive) for the C6 automatic transmission or (D) (overdrive) for the E4OD automatic transmission.

After making the adjustment, check for park engagement. Check the gearshift lever in all detent positions with the engine (6007) running to make sure correct detent/transmission actions. Readjust if necessary.

http://www.diesel-dave.com/vehic/manual/stj/images/d9966c.gif

Item Part Number Description

1 — Three-Pound Weight (to Be Improvised in Shop)

2 7210 Gearshift Lever

3 3514 Steering Column

4 7B229 Transmission Shift Cable Bracket

5 7E395 Cable Assembly, Transmission Shift

6 56137-S100 Bolt, 3/16-16 x .62 Hex ****** Head

Shift Cable, Automatic Transmission, F-150, F-250, F-350, F-Super Duty and Bronco

After servicing linkage, verify that the transmission range (TR) sensor is properly adjusted. Refer to In-Vehicle Service in this section.

Manual Lever Position/Transmission Range (MLP/TR) Sensor Test @

http://ww2.justanswer.com/uploads/paynlessauto/2009-08-28_021637_222222.pdf

Shift Scheduling

Perform Shift Point Road Test procedure as outlined in this section.

Shift Point Road Test

This test verifies that the shift control system is operating properly.

Bring engine and transmission up to normal operating temperature.

Operate the vehicle with the gearshift selector lever in (D) range.

Apply minimum throttle and observe the speeds at which the upshift occurs and the torque converter engages. (Refer to Automatic Transmission Special Specification Bulletin FPS-12180-96 for actual speed.)

E4OD APPLICATIONS SHIFT SPEEDS — APPROXIMATE* MPH

Throttle Opening Range Shift Vehicle Speed (1)

Light Throttle (D), D

(D), D

(D)

(D)

(D), D

(D), D 1-2

2-3

3-4

4-3

3-2

2-1 8-15

16-24

32-49

28-45

12-20

5-15

Wide-Open Throttle (D), D

(D), D

(D)

(D)

(D), D

(D), D 1-2

2-3

3-4

4-3

3-2

2-1 20-43

37-74

54-110

51-103

31-71

17-38

*(1) Nominal shift speed at sea level is shown. Actual shift speed will depend on tire brand, size and axle ratio. Refer to Automatic Transmission Special Specification Bulletin FPS-12180-96 for actual speeds.

D is the same as (D) with the transmission control switch actuated (light on).

With the vehicle in OVERDRIVE (fourth gear), depress the transmission control switch. The transmission should downshift to third gear. Remove foot from accelerator pedal; engine braking should occur.

Press accelerator pedal to floor (wide-open throttle). Transmission should shift from 3rd to 2nd gear, or 3rd to 1st depending on vehicle speed. Torque converter clutch should disengage and then reapply.

With vehicle (D) range above 80 km/h (50 mph) and less than half throttle, move the transmission gearshift selector lever from (D) range to manual 2 range and remove foot from accelerator pedal. The transmission should immediately downshift into second gear. With the vehicle remaining in manual 2 range, move transmission gearshift selector lever into manual 1 range, and release accelerator pedal. Transmission should downshift into 1st gear at speeds BELOW 48-56 km/h (30-35 mph).

If transmission fails to upshift/downshift or torque converter clutch does not apply and release, refer to Diagnosis by Symptom Index under Diagnosis by Symptom in the Diagnosis and Testing portion of this section for concern diagnosis.

Torque Converter Operation Test

This test verifies the torque converter clutch control system and the torque converter are operating properly.

Perform Quick Test as stated in the Powertrain Control/Emissions Diagnosis Manual OBDI or OBDII. Check for a code 628, 629, 652. Refer to Pinpoint Tests in the Diagnosis and Testing portion of this section for diagnosis.

Connect a tachometer to the engine.

Bring engine to normal operating temperature by driving the vehicle at highway speeds for approximately 15 minutes in (D) range.

After normal operating temperatures are reached, maintain a constant vehicle speed of about 80 km/h (50 mph), and tap the brake pedal (2455) with the left foot.

Engine rpm should increase when the brake pedal is tapped, and decrease about five seconds after the brake pedal is released. If this does not occur, refer to Torque Converter Operation Concerns in the Diagnosis by Symptom Index under Diagnosis by Symptom in the Diagnosis and Testing portion of this section.

If the vehicle stalls in (D) at idle with the vehicle at a stop, move the gearshift selector lever to the manual 1 position. If the vehicle stalls, the cause may be the converter control valve in the pump. Service as required. If the vehicle doesn't stall in manual 1, refer to the Electrical Diagnosis in the Powertrain Control/Emissions Diagnosis Manual OBDI or OBDII for powertrain control module (PCM) (12A650) and Vehicle Harness Diagnosis.

Converter Clutch Always Applied

Go to routine No. 341.

341 — HYDRAULIC/MECHANICAL ROUTINE

Improper Pressures

Low line pressures

Check line pressure at line tap. Perform Line Pressure and Stall Speed Tests. Refer to Pressure Chart No. 401 for specification.

Main Controls

Bolts not tightened to specification

Retighten bolts to specification.

Torque converter clutch solenoid malfunction

Refer to Electrical Routine No. 241.

Gaskets damaged

Inspect for damage and replace.

Pump Assembly

Bolts not tightened to specification

Retighten bolts to specification.

Converter clutch control valve misassembled, stuck, damaged

Inspect for damage. Service as required.

Porosity/cross leaks

Inspect for porosity/leaks, valve damaged, replace pump as required.

Gaskets damaged

Inspect for damage and replace.

Excessive pump gear end clearance

Perform pump gear end clearance check as outlined in this section.

Torque Converter Assembly

End play (NONE)

Perform End Play Check as outlined in this section.

Piston plate damaged/stuck to cover

Inspect for damage. Service as required.

Inspect transmission cooling system for proper **** flow. Follow the procedures in this section.

Converter One-Way Clutch

Damaged

Go to Torque Converter Checks in this section. When internal wear or damage has occurred in the transmission, metal particles, clutch plate material, or band material may have been carried into the torque converter (7902) and transmission fluid cooler (7A095). These contaminants are a major cause of recurring transmission troubles and MUST be removed from the system before the transmission is put back into service.

Whenever a transmission has been disassembled to replace worn or damaged parts or because the valve body valves stick repeatedly from foreign material, the torque converter, transmission fluid cooler and transmission fluid cooler tubes and hoses MUST be cleaned by using a mechanically agitated cleaner, such as Rotunda Torque Converter/Oil Cooler Cleaner 014-00028 or equivalent.

NOTE: Mineral spirits used to clean the torque converter must be fresh, non-chlorinated and non-halogenated.

Flush the torque converter of the remaining solvent using this procedure.

Thoroughly drain remaining solvent through the drain plug.

 
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ciakow

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Wauw Al, this is great stuff.

I will chechk the things I can check myself and keep you updated!

 

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