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Jan 28, 2011 | 11:50 PM

diehardfordtruck

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From: north georgia

Spark Knock

I have purchased a 97 T Bird with a 4.6 I want to use it for a engine transplant.in a 74 pickup. the engine spark knocks continuous when the engine gets running tempeture no matter what octane fuel you use. I thought knock sensor but no parts store shows that it has one...any sugestions.....thanks
Charles

Jan 29, 2011 | 11:45 AM

LxMan1

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From: Louisville,Ky.

Sounds like either a very lean fuel mixture, clogged cats, or a timing issue. Are you getting any codes at all? Tried unhooking the battery for an hour or two to reset the pcm?

Jan 31, 2011 | 07:32 AM

Johnny Langton

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From: SE Texas

Quote:

Originally Posted by diehardfordtruck

Tbirds did not use a knock sensor.
You have something seriously wrong with that engine if it's knocking like that.
JL

Jan 31, 2011 | 11:31 PM

diehardfordtruck

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From: north georgia

The check engine light hasn't been on,but I realized the light isn't working at all,so I'm going to check the codes tomorrow and see whats going on with it.maybe it will shed some light on whats going on...I'm goona pull the battery cable off after i check the codes to see if it might reset the computer....thanks for the advise I'll post up what codes it got and see if anyone got an idea....
thanks Charles

Jan 31, 2011 | 11:38 PM

diehardfordtruck

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From: north georgia

Johnnny what may I ask have you done to your Tbird to get it to run 12.16@111.78..

Feb 7, 2011 | 06:38 AM

hodges710

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From: New Hampshire

Quote:

Originally Posted by Johnny Langton

Tbirds did not use a knock sensor.
You have something seriously wrong with that engine if it's knocking like that.
JL

Well that is some learning, never had a Tbird but I thought just about all vehicles with a pcm had a knock sensor.

Feb 7, 2011 | 07:25 AM

Johnny Langton

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From: SE Texas

Quote:

Originally Posted by diehardfordtruck

Johnnny what may I ask have you done to your Tbird to get it to run 12.16@111.78..

Listed in this post:

https://www.ford-trucks.com/forums/8...ml#post7849986
JL

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Feb 7, 2011 | 07:24 PM

diehardfordtruck

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From: north georgia

I have been real busy and haven't had time to check the codes,but it is pinging not knocking,I'll try to get the codes tomorrow,I have never heard that a dirty maf would cause it to ping either so learned something new today....

Feb 7, 2011 | 07:49 PM

#10

guitar maestro

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Quote:

Originally Posted by diehardfordtruck

Oh, absolutely. When the maf meter is dirty, it cannot do it's very important job of reporting the actual airflow into the engine, and this is where the air:fuel ratio gets all out of whack. Quite common on "aged" cars.

TCCoA Tech Articles

Feb 8, 2011 | 08:09 PM

#11

diehardfordtruck

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From: north georgia

Finally got the codes from the Tbird and it has a lot...
P1443B Evap Ctrl System/ac System
P0401 Insufficient EGR Flow Detected
P0402 Exessive EGR Flow
P0420B Bank#1 Cat Effcy Below Limit
P0430 Bank#2 Cat Effcy Below Limit
P0171 Too Lean Bank 1
P0174 Too Lean Bank 2
No wonder it barely runs,
What a nightmare....Anybody got any ideas???

Feb 8, 2011 | 10:46 PM

#12

guitar maestro

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Clean the maf. Repair broken vacuum lines. Check EGR system. Replace evap solenoid and vavle. Change plugs, plug wires, fuel filter.

Feb 9, 2011 | 05:47 AM

#13

diehardfordtruck

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From: north georgia

Whats good to clean the MAF with,and I know this sounds kinda dumb,I might know it by a differant name but...what is the evap solenoid and valve? I'm sure that is the correct name for it I'm just blank on that one this morning....thanks for the help.

Feb 9, 2011 | 07:03 AM

#14

hodges710

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From: New Hampshire

MAF cleaner is the best and can be found at your choice of auto parts store. In most cases there is no dumb question but by some people at given times, there are dumb answers/responces. There seems to be a selected few in here that have ego issues or think they know it all and whats worst is when two or more of them get together.

Feb 9, 2011 | 07:17 AM

#15

Johnny Langton

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Joined: Oct 2006

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From: SE Texas

Quote:

Originally Posted by diehardfordtruck

There are several things that can be used to clean the MAF. I use and have always used brake cleaner. The easiest way to do it is to get a set of tamperproof bits,and remove the sensor from the housing where you can get to it easily.
JL