Anyone Experience This Problem?
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Freshman User
Joined: Apr 2006
Posts: 29
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From: channahon, Il
Anyone Experience This Problem?
Anyone Experience This Problem
<HR style="COLOR: #ffffff" SIZE=1><!-- / icon and title --><!-- message -->I have a 95" F150 supercab with a 302 and auto trans. Its is freshly tuned and up to snuff maint wise.
My problem is while driving down the highway and cruise on and going up a slow upgrade the rpms will drop 100 and then I notice the timing drop down to 6 deg. Then the TC will unlock and rpms go up 400 and the timing stays the same or drop to 4 deg. It still cant keep speed so the trans drops to 3rd and rpms go to 3000 and timing stays at 6 to 8 deg. It has no torque to climb the hill due to no timing. When the motor is at 3000 in third it is just reving and no torque. It is not the trans slipping (new rebuilt and new TC 3000 miles ago).
Anyone have this problem or know how to get around this issue? I know my mpg would climb too due to this lack of torque. I am steady at 13.5 mpg now on the highway.
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<HR style="COLOR: #ffffff" SIZE=1><!-- / icon and title --><!-- message -->I have a 95" F150 supercab with a 302 and auto trans. Its is freshly tuned and up to snuff maint wise.
My problem is while driving down the highway and cruise on and going up a slow upgrade the rpms will drop 100 and then I notice the timing drop down to 6 deg. Then the TC will unlock and rpms go up 400 and the timing stays the same or drop to 4 deg. It still cant keep speed so the trans drops to 3rd and rpms go to 3000 and timing stays at 6 to 8 deg. It has no torque to climb the hill due to no timing. When the motor is at 3000 in third it is just reving and no torque. It is not the trans slipping (new rebuilt and new TC 3000 miles ago).
Anyone have this problem or know how to get around this issue? I know my mpg would climb too due to this lack of torque. I am steady at 13.5 mpg now on the highway.
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FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
What you describe is pretty typical behavior for a 302 powered truck IMO.. the motor doesn't make enough TQ to climb grades at HWY speeds without downshifting in most cases. But I too am interested in finding out how you know what the timing advance is doing realtime. Do you have a tuner on this truck?
Senior User
Joined: Dec 2006
Posts: 237
Likes: 0
From: churchville, ny
How do you know this? Little guy under the hood with timing light?
Last edited by str8racing; Jun 20, 2008 at 04:58 PM. Reason: added text.
Elder User
Joined: Feb 2004
Posts: 553
Likes: 0
From: North Bend Washington
wouldn't a Diagnostics tool (code reader) for that year and newer be able to give you that info while driving?
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Posting Guru
Joined: Jan 2001
Posts: 2,358
Likes: 3
From: Nebraska
A good scan tool should be able to tell you that info. This makes me curious, I might have to try the one at work on my truck and see what it does.
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