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337 Posts
Discussion Starter #1
Yes I know, this has been covered many times. So go ahead and bitch at me, just leave some good info behind it :thumbup

Anyways.. My transmission has this problem of shifting to early. It's not constant, it only happens after I go a little hard on it for like 5 minutes.

After of driving like an a-hole it wants to shift from first to second at about 2,500 rpms max, even if I floor it. It will hit 2,500 and pretty much go out of gear until it hits second, then it drops to 1k rpms. Then shift into third even if I'm cruising in low rpms. It even shifts into 4th when I'm still at like 1,500 rpms.

I'm thinking it could be the tps because it only happens after WOT a few times.

Then this problem persists until I baby it for about a week. Then alls good and I drive nice and easy on it until the weekend and happens all over again.

Anyone ever fix something like this.. I'm about to drop 150 for a diagnosis at ford because I'm too lazy to figure it out. But if anyone can tell me if a tps will do this let me know :toothless
 

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yo Stone,
This is by Ford in;

96 Bronco-F-Series Workshop Manual (PARTIAL)
Same as most earlier years exc. for OBD II in 96, 4WABS (93-96); ABS (87-92); Air Bag (94-96); 3 Screw Automatic Locking Hubs (Built from May 95 through 96); Spark Plug Wire Routing & Firing Order (The firing order for 1987-1993 5.0Ls is 1-5-4-2-6-3-7-8. The firing order for 1994- 96 5.0Ls & all 5.8Ls is 1-3-7-2-6-5-4-8.);
2-piece Spindle Rolling Diaphragm Seal (RDS) used on 5/95 to 96 Broncos & F Series 1/2-ton 4WD
and a few other items that I still need to research



Section 07-01A: Transmission, Automatic, E4OD
DIAGNOSIS AND TESTING
Diagnosis by Symptom
Shift Concerns: Shift Timing — Early/Late (Some/All)
Possible Component

Reference/Action

211 — ELECTRICAL ROUTINE
Powertrain Control System •Perform Shift Point Road Test.

•Electrical inputs/outputs, vehicle wiring harnesses, powertrain control module, throttle position sensor, transmission fluid temperature sensor, vehicle speed sensor, shift solenoid 1, shift solenoid 2
•Run On-Board Diagnostics. This a self-test for Codes; see this Self Test for Diagnostic Trouble Codes (DTC)s by my pal, BroncoJoe19
Service as required. Clear codes, road test and rerun On-Board Diagnostics.

Other Electrical Concerns
•No power to powertrain control module, Keep Alive Memory erased from powertrain control module
•Restore memory by performing Transmission Drive Cycle Test.

••Speedometer gear change (model dependant)
•Refer to this service manual for programmable speedometer/odometer module diagnostic and programming procedures.

311 — HYDRAULIC/MECHANICAL ROUTINE
Other
•Tire size change
•Refer to the specification decal on door panel and verify that vehicle has original equipment. Changes in tire size or axle ratio may affect shift timing

•Axle ratio change

Power/Engine Performance — Poor Engine Performance
•Refer to Routine No. 253/353.

Main Controls (Valve Body)
•Valves, accumulators, stuck or damaged
Inspect for damage, contamination. Service as required.

•Gaskets damaged
Inspect for damage and replace.

•Bolts not tightened to specification
Retighten bolts to specification.
 

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Registered
Joined
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337 Posts
Discussion Starter #3
yo Stone,

This is by Ford in;



96 Bronco-F-Series Workshop Manual (PARTIAL)

Same as most earlier years exc. for OBD II in 96, 4WABS (93-96); ABS (87-92); Air Bag (94-96); 3 Screw Automatic Locking Hubs (Built from May 95 through 96); Spark Plug Wire Routing & Firing Order (The firing order for 1987-1993 5.0Ls is 1-5-4-2-6-3-7-8. The firing order for 1994- 96 5.0Ls & all 5.8Ls is 1-3-7-2-6-5-4-8.);

2-piece Spindle Rolling Diaphragm Seal (RDS) used on 5/95 to 96 Broncos & F Series 1/2-ton 4WD

and a few other items that I still need to research







Section 07-01A: Transmission, Automatic, E4OD

DIAGNOSIS AND TESTING

Diagnosis by Symptom

Shift Concerns: Shift Timing — Early/Late (Some/All)

Possible Component



Reference/Action



211 — ELECTRICAL ROUTINE

Powertrain Control System •Perform Shift Point Road Test.



•Electrical inputs/outputs, vehicle wiring harnesses, powertrain control module, throttle position sensor, transmission fluid temperature sensor, vehicle speed sensor, shift solenoid 1, shift solenoid 2

•Run On-Board Diagnostics. This a self-test for Codes; see this Self Test for Diagnostic Trouble Codes (DTC)s by my pal, BroncoJoe19

Service as required. Clear codes, road test and rerun On-Board Diagnostics.



Other Electrical Concerns

•No power to powertrain control module, Keep Alive Memory erased from powertrain control module

•Restore memory by performing Transmission Drive Cycle Test.



••Speedometer gear change (model dependant)

•Refer to this service manual for programmable speedometer/odometer module diagnostic and programming procedures.



311 — HYDRAULIC/MECHANICAL ROUTINE

Other

•Tire size change

•Refer to the specification decal on door panel and verify that vehicle has original equipment. Changes in tire size or axle ratio may affect shift timing



•Axle ratio change



Power/Engine Performance — Poor Engine Performance

•Refer to Routine No. 253/353.



Main Controls (Valve Body)

•Valves, accumulators, stuck or damaged

Inspect for damage, contamination. Service as required.



•Gaskets damaged

Inspect for damage and replace.



•Bolts not tightened to specification

Retighten bolts to specification.

Once again. Awesome info. Appreciate it!
 
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