5.0L Trouble
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From: Franklin
5.0L Trouble
Hey guys.
So I recently traded my Little honda civic for my beauty and beast 94 F150XLT 5.0 with the Aode auto tranny in it. I love the truck but there are a few issues with it that I can't seem to figure out. I have been a mechanic for the past 6 years so stuff like this doesn't generally take this long.
heres the trouble i'm having. It runs fine but if I take a turn or going up a hill it feels like the tranny wont downshift and I lose almost all fuel pressure. Say the truck is in 3rd, when I hit a hill it won't downshift to 2nd to get me up the hill and the truck goes into a lub,lub,lub,lub mode with no power to it. if feels like i'm towing a diesel filled with bricks.
Any suggestions as to what it may be?
I have already replaced the plugs and wires.
I've been told so far it's either a vacuum leak, my alternator, fuel pressure, or my tranny going out.
I can't find a vacuum leak, according to the last owner a new transmission was just put in it 50k ago.
I do know my rear main seal is leaking
So I recently traded my Little honda civic for my beauty and beast 94 F150XLT 5.0 with the Aode auto tranny in it. I love the truck but there are a few issues with it that I can't seem to figure out. I have been a mechanic for the past 6 years so stuff like this doesn't generally take this long.
heres the trouble i'm having. It runs fine but if I take a turn or going up a hill it feels like the tranny wont downshift and I lose almost all fuel pressure. Say the truck is in 3rd, when I hit a hill it won't downshift to 2nd to get me up the hill and the truck goes into a lub,lub,lub,lub mode with no power to it. if feels like i'm towing a diesel filled with bricks.
Any suggestions as to what it may be?
I have already replaced the plugs and wires.
I've been told so far it's either a vacuum leak, my alternator, fuel pressure, or my tranny going out.
I can't find a vacuum leak, according to the last owner a new transmission was just put in it 50k ago.
I do know my rear main seal is leaking
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You can test the TPS with a multimeter. Grab a shop manual or chiltons manual for the right voltages. Should be .9 vdc at idle if I remember right. Intake air charge temp sensor will cause loss of power too. Can't help with the tranny!
Fleet Owner
Joined: Oct 2005
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From: Kentucky
What is that code by number please?
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From: Franklin
@Encho you seem to have the exact same truck as me, How do I check to see if my tranny is the Aode or Eo4d?
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Fleet Owner
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From: Kentucky
Your memory is failing you. Anything between 0.6-1.0 VDC is acceptable for the closed throttle TPS voltage.
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From: Franklin
P0705 Transmission Range Sensor out of Self-Test Range or Shorted to Ground
I had never seen it before and the master tech I work under as well as the parts house guy both said to replace the tranny speed sensor
I had never seen it before and the master tech I work under as well as the parts house guy both said to replace the tranny speed sensor
Fleet Owner
Joined: Oct 2005
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From: Kentucky
And the reference to Transmission Range Sensor is most likely the Manual Lever Position Sensor (MLPS) on the driver side of the transmission.
Fleet Owner
Joined: Oct 2005
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From: Kentucky
Trans. Code E is an E4OD (No transmission speed sensor)
Trans. Code U is a 4R70W/AODE
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From: Franklin
[QUOTE=rla2005;12539241]You have a 1994 F150 giving OBD-II codes. I don't think so. Your truck should have 3 digit OBD-I codes.
And the reference to Transmission Range Sensor is most likely the Manual Lever Position Sensor (MLPS) on the driver side of the transmission.
OBD1 code 653.
And the reference to Transmission Range Sensor is most likely the Manual Lever Position Sensor (MLPS) on the driver side of the transmission.
OBD1 code 653.
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From: Franklin
In the picture above I replaced the sensor on the top. not the one the cable is connected to