1999 miss-fire question?
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Senior User
Joined: Mar 2006
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1999 miss-fire question?
My 99 recently started a miss under loads. I have changed all the boots(non were cracked) and the fuel filter. The biggest problem is no codes. I cant get a check engine (service engine) light.
It idles and revs smooth, just under load it sputters.
Help me, It seems obvious but becuase it intermitent it must not send a fault.
It idles and revs smooth, just under load it sputters.
Help me, It seems obvious but becuase it intermitent it must not send a fault.
Senior User
Joined: Apr 2008
Posts: 365
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From: Round Rock, TX
You've already done good by replacing the fuel filter. That would be the first thing I would look at. I would test the coil packs if I were you. Typically when they start to go it will be under heavy load.
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Joined: Jul 2002
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From: Long Island USA
Sounds like a bad COP. Or maybe clean the MAF first before doing anything else.
As for WHY the CEL won't come on:
https://www.ford-trucks.com/forums/5...t-come-on.html
As for WHY the CEL won't come on:
https://www.ford-trucks.com/forums/5...t-come-on.html
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
Sounds like a bad COP. Or maybe clean the MAF first before doing anything else.
As for WHY the CEL won't come on:
https://www.ford-trucks.com/forums/5...t-come-on.html
As for WHY the CEL won't come on:
https://www.ford-trucks.com/forums/5...t-come-on.html
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
P1000 is "readiness tests not completed" or some such.
My 2001 V10 ALWAYS returns that code because it hasn't completed the OBD-II readiness test - but then, it's not supposed to either.
https://www.ford-trucks.com/forums/5...t-come-on.html
My 2001 V10 ALWAYS returns that code because it hasn't completed the OBD-II readiness test - but then, it's not supposed to either.
https://www.ford-trucks.com/forums/5...t-come-on.html
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
P1000 is "readiness tests not completed" or some such.
My 2001 V10 ALWAYS returns that code because it hasn't completed the OBD-II readiness test - but then, it's not supposed to either.
https://www.ford-trucks.com/forums/5...t-come-on.html
My 2001 V10 ALWAYS returns that code because it hasn't completed the OBD-II readiness test - but then, it's not supposed to either.
https://www.ford-trucks.com/forums/5...t-come-on.html
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I have now replaced the COP's one at a time, done the boots and plugs. It still misses, Im ready to trade for a deisel, they have no plugs.
The truck has pinged from day one, now it just doesnt run right.
The truck has pinged from day one, now it just doesnt run right.
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What plugs did you put in it? If you put bosch anything in, replace them.
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Just some plugs I had laying arounsd in the garage............you think I'm an idiot.
Everything is OE/motorcraft.
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But it will do the following;
1. Cost you 2+ times more to service
2. Fail. Like most do. Usually due to an egr cooler, head gasket, or turbo. All of which will drain your pocketbook more that this problem you are having.
1. Cost you 2+ times more to service
2. Fail. Like most do. Usually due to an egr cooler, head gasket, or turbo. All of which will drain your pocketbook more that this problem you are having.
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Senior User
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I tow a 10000lb trailer at least twice monthly and would use it more if I was comfortable with my TV.
My BIL is a deisel mechanic by trade so repairs are about a wash.
Now it will go to my other mechanic who just recently spent several days doing diagnoistic check up with a laptop pluged into tje OBD port, driving around town. he just did the same on a friends identical truck.
