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Old 10-16-2011, 11:24   #1 (permalink)
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1993 Crown Vic Computer Light comes on

I have a computer light which indicates there is an EGR problem. The EGR valve is working okay but I have been told that there is no flow and that the throttle valve etc would have to be removed and all the carbon etc cleaned out. Has anyone run into this problem and done the work himself? How much work is it to remove the throttle valve etc and cure this problem. The light only comes on after the engine heats up for about 5 or 6 miles. Engine runs okay otherwise.
Lee
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Old 10-16-2011, 11:46   #2 (permalink)
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Re: 1993 Crown Vic Computer Light comes on

This may help.
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Old 10-17-2011, 07:46   #3 (permalink)
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Re: 1993 Crown Vic Computer Light comes on

Hello Autonut:

I may have missed it in the video, but a couple of points should be emphasized. They are simple, but can be problems if ignored.

#1 Do not drop any bolts/nuts; invariably, they will fall through the intake manifold and into the "valley" and you will have to fish around with a magnet, or remove the intake manifold to recover them.
#2 Do not clean the throttle body with anything abrasive! WD 40 and a soft shop towel is all that's needed.
#3 Don't forget to plug the intake with a shop rag and vacuum the carbon out after cleaning the EGR grooves. Carbon is hard and might score your cylinder walls.
#4 Check your EGR tube for carbon buildup, and clean as necessary (as well as the channel machined into the intake manifold).

This is an easy job, not complicated at all, just take your time and be methodical.

Last edited by Bajarider; 10-17-2011 at 07:47. Reason: forgot word
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Old 10-17-2011, 08:51   #4 (permalink)
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Re: 1993 Crown Vic Computer Light comes on

Quote:
Originally Posted by Bajarider View Post
Hello Autonut:

I may have missed it in the video, but a couple of points should be emphasized. They are simple, but can be problems if ignored.

#1 Do not drop any bolts/nuts; invariably, they will fall through the intake manifold and into the "valley" and you will have to fish around with a magnet, or remove the intake manifold to recover them.
#2 Do not clean the throttle body with anything abrasive! WD 40 and a soft shop towel is all that's needed.
#3 Don't forget to plug the intake with a shop rag and vacuum the carbon out after cleaning the EGR grooves. Carbon is hard and might score your cylinder walls.
#4 Check your EGR tube for carbon buildup, and clean as necessary (as well as the channel machined into the intake manifold).

This is an easy job, not complicated at all, just take your time and be methodical.
x2^
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