CEL flashing on acceleration
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Cross-Country
Joined: Feb 2018
Posts: 52
Likes: 8
CEL flashing on acceleration
Truck shudders a bit at cruise, around 55mph. Sometimes surges at idle. Otherwise runs fine... Can anyone tell if it's actually flashing a code or not? Pulled an EGR and TPS code with the engine off.
Lead Driver
Joined: Jan 2019
Posts: 5,070
Likes: 863
From: N.W. Alabama
Do you know how to test for codes, Innova 3145, is the easy button, or count flashes see links below
Fuel Injection Technical Library » How To Run a Self-Test
(16) How to read a check engine light code on a Ford 1983-1995 EEC 4 system - YouTube
Fuel Injection Technical Library » How To Run a Self-Test
(16) How to read a check engine light code on a Ford 1983-1995 EEC 4 system - YouTube
Tuned
Joined: Dec 2005
Posts: 399
Likes: 56
From: Saskatchewan
My truck does something similar. I don't remember the codes I pulled, but the CEL will flash when accelerating, but tends to not flash while coasting, or at steady throttle. I know I'm only running on 7 cylinders, so I believe the misfire is flashing the light. I think the flashing is telling you that there is something happening at that time and it may set a code, it is detecting an error and letting you know. Pull the codes and see what it tells you.
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Thread Starter
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Cross-Country
Joined: Feb 2018
Posts: 52
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My truck does something similar. I don't remember the codes I pulled, but the CEL will flash when accelerating, but tends to not flash while coasting, or at steady throttle. I know I'm only running on 7 cylinders, so I believe the misfire is flashing the light. I think the flashing is telling you that there is something happening at that time and it may set a code, it is detecting an error and letting you know. Pull the codes and see what it tells you.
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Thread Starter
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Cross-Country
Joined: Feb 2018
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I have tested them. Tried going through this on another thread until the keyboard mechanics on this forum decided to somehow turn it into a "what is a C6 transmission" thread. Would rather throw money at it and figure it out myself than waste my time repeating myself over and over here.
Senior User
Joined: Jul 2018
Posts: 229
Likes: 32
From: New York
Your timing is too far advanced and your vehicle has officially entered a realm called "Limp Mode"...Take pics of how you have your distributor set and post them........
Turn the distributor back to 10* BTDC then reset timing limits by pulling spout connector starting truck bringing up to operating temps while under a load then turn off load shutdown engine reinstall spout connector restart truck and drive easy 10 miles before you fry your ringlands..
Youll also have to do an EEC bleed down by disconnecting the battery for 20 minutes aswell before you introduce a load to do a load calibration doing a 2min idle with everything turned on and to the max to sync sensors to the eec aswell and then turn off all load turned on to introduce load to go out and moderately drive your truck 10 miles to set spark and fuel tables in the EEC......
You may need to replace the TFI module or the distributor due to faulty halls effect pickup too from being compromised from being thermally overloaded........
Good Luck
Turn the distributor back to 10* BTDC then reset timing limits by pulling spout connector starting truck bringing up to operating temps while under a load then turn off load shutdown engine reinstall spout connector restart truck and drive easy 10 miles before you fry your ringlands..
Youll also have to do an EEC bleed down by disconnecting the battery for 20 minutes aswell before you introduce a load to do a load calibration doing a 2min idle with everything turned on and to the max to sync sensors to the eec aswell and then turn off all load turned on to introduce load to go out and moderately drive your truck 10 miles to set spark and fuel tables in the EEC......
You may need to replace the TFI module or the distributor due to faulty halls effect pickup too from being compromised from being thermally overloaded........
Good Luck
Hotshot
Joined: Jun 2015
Posts: 12,819
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Based on what? Did you see or read something in this thread that I haven’t?
Senior User
Joined: Nov 2003
Posts: 105
Likes: 0
I have tested them. Tried going through this on another thread until the keyboard mechanics on this forum decided to somehow turn it into a "what is a C6 transmission" thread. Would rather throw money at it and figure it out myself than waste my time repeating myself over and over here.
Lead Driver
Joined: Jan 2019
Posts: 5,070
Likes: 863
From: N.W. Alabama
Hey, I'll take blame on the drag off topic-->1988 302 surging at idle and cruise - Ford Truck Enthusiasts Forums,
my, bad. Dont start firing the parts cannon at it, these new china made parts are no good straight out of box sometimes, test yours first,
my, bad. Dont start firing the parts cannon at it, these new china made parts are no good straight out of box sometimes, test yours first,
Thread Starter
|
Cross-Country
Joined: Feb 2018
Posts: 52
Likes: 8
Your timing is too far advanced and your vehicle has officially entered a realm called "Limp Mode"...Take pics of how you have your distributor set and post them........
Turn the distributor back to 10* BTDC then reset timing limits by pulling spout connector starting truck bringing up to operating temps while under a load then turn off load shutdown engine reinstall spout connector restart truck and drive easy 10 miles before you fry your ringlands..
Youll also have to do an EEC bleed down by disconnecting the battery for 20 minutes aswell before you introduce a load to do a load calibration doing a 2min idle with everything turned on and to the max to sync sensors to the eec aswell and then turn off all load turned on to introduce load to go out and moderately drive your truck 10 miles to set spark and fuel tables in the EEC......
You may need to replace the TFI module or the distributor due to faulty halls effect pickup too from being compromised from being thermally overloaded........
Good Luck
Turn the distributor back to 10* BTDC then reset timing limits by pulling spout connector starting truck bringing up to operating temps while under a load then turn off load shutdown engine reinstall spout connector restart truck and drive easy 10 miles before you fry your ringlands..
Youll also have to do an EEC bleed down by disconnecting the battery for 20 minutes aswell before you introduce a load to do a load calibration doing a 2min idle with everything turned on and to the max to sync sensors to the eec aswell and then turn off all load turned on to introduce load to go out and moderately drive your truck 10 miles to set spark and fuel tables in the EEC......
You may need to replace the TFI module or the distributor due to faulty halls effect pickup too from being compromised from being thermally overloaded........
Good Luck