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Old 08-02-2018, 06:35 AM   #1
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Check Engine light

Can anyone with Check Engine warning light experiences tell me what the most common cause is? My warning light comes on after a climb but only stays on about 10 seconds, then doesn't come on again for a couple hills. The engine is a Ford 460. I have taken it to the local shop to check the codes but nothing shows up.
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Old 08-02-2018, 06:40 AM   #2
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When is the last time the fuel filter was changed?
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Old 08-02-2018, 06:51 AM   #3
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I bought the rv two years ago, it hasn't been changed in that time. I will try that. Thanks!
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Old 08-02-2018, 10:05 AM   #4
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A light that self clears could be any number of things.....

I bought one of the wifi - ODBII converters, then run the app "Tporque" on my phone. Its great for reading real time.. You might need to do this.
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Old 08-02-2018, 10:40 AM   #5
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Quote:
Originally Posted by Bob Waggoner View Post
Can anyone with Check Engine warning light experiences tell me what the most common cause is? My warning light comes on after a climb but only stays on about 10 seconds, then doesn't come on again for a couple hills. The engine is a Ford 460. I have taken it to the local shop to check the codes but nothing shows up.
Check engine, yellow, lights are emission related, IE O2 sensors the like. Fuel filter is a good bet as has been mentioned above. If an O2 sensor is loose or is failing it might also cause what you are experiencing.

Keep us posted please
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Old 08-02-2018, 02:07 PM   #6
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The #1 cause for a check engine light is the gas cap, although that doesn't sound like your issue. I agree with the others. Change the fuel filter just because it's overdue and purchase an inexpensive ODBII code reader.
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Old 08-03-2018, 12:00 AM   #7
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Originally Posted by Waiter21 View Post
A light that self clears could be any number of things.....

I bought one of the wifi - ODBII converters, then run the app "Tporque" on my phone. Its great for reading real time.. You might need to do this.
Quote:
Originally Posted by vito.a View Post
The #1 cause for a check engine light is the gas cap, although that doesn't sound like your issue. I agree with the others. Change the fuel filter just because it's overdue and purchase an inexpensive ODBII code reader.
The OP has a 460 engine it has OBD I, not OBD II. Hopefully the shop he takes it too knows the difference
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Old 08-03-2018, 12:50 AM   #8
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Old 08-03-2018, 01:44 AM   #9
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The #1 cause for a check engine light is the gas cap, although that doesn't sound like your issue. I agree with the others. Change the fuel filter just because it's overdue and purchase an inexpensive ODBII code reader.
The gas cap / tank pressure is calibrated out of heavy vehicles. Page 3.
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Old 08-03-2018, 06:42 AM   #10
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The OP has a 460 engine it has OBD I, not OBD II. Hopefully the shop he takes it too knows the difference
I wasn't sure what year they went to OBDII.. Anyway. the manual that SpiderRV referred to is also on my web site.. This gives a very good description and explanation of each ODBII code, how its set, what the criteria is for the test, etc, etc, etc.. Great reading if you have one of these codes set..

If its an ODB-I, The codes can be read by counting the blinking of the CEL light. To get the light to blink the codes, short pins "A" and "B" together on the ALDL connector...
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Old 08-03-2018, 06:55 AM   #11
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The OP has a 460 engine it has OBD I, not OBD II. Hopefully the shop he takes it too knows the difference
Here's some info on this

1996 5.8L Over 8500 GVW & 7.5L Over 14,000 GVW, 49 States & 7.5L Super Duty 50 States were OBD 1.

1997 7.5L (49 States Or Super Duty) were OBD 1. 1997 7.5L California, Except Super Duty were OBD 2.

1998 there were no OBD 1 trucks. The F53 sold in 1998 was a 1997 with an OBD 1 system. If it had a 460 (7.5L) engine in it in 1998 it was a 1997 with OBD 1.

Ford stopping selling/offering the 7.5L in 1998.
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Old 08-04-2018, 08:13 AM   #12
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Once again iRV2 and it's members prove to be invaluable! Thanks for everyone's help with my "Check Engine light" question. Going back to the shop for a fuel filter change and I will buy a code reader.
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Old 08-05-2018, 08:59 AM   #13
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Quote:
Originally Posted by Waiter21 View Post
If its an ODB-I, The codes can be read by counting the blinking of the CEL light. To get the light to blink the codes, short pins "A" and "B" together on the ALDL connector...

That ALDL connector is for General Motor products, he has an EECIV Ford.


Similar to this http://www.irv2.com/forums/f23/locat...53-258440.html
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Old 08-05-2018, 11:46 AM   #14
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If the light comes on then turns off, to me it sounds like a misfire code as most codes will leave the light illuminated until the condition is corrected.

Was the light flashing? That is telltale misfire.
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