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Registered
2003 Cadillac DeVille DHS
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20 Posts
Discussion Starter #1
585973
Is that build-up or is that supposed to be like that?
2003 Cadillac Deville DHS, North Star 32 valve V8, throttle body to intake manifold...
 

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Super Moderator
2003 Deville Base
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5,261 Posts
Looks a serious need for TB cleaning. While you're at it, clean the MAF and IAC.
 

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Super Moderator
2010 DTS
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87,297 Posts
That's pretty normal, especially if it has been neglected. Use an old toothbrush and TB cleaner to clean it up. The first time will take a bit of scrubbing, but if you do it once a year, it will be a simple spray and wipe job.
 

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Registered
2000 deville
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59 Posts
Mine was similarly filthy, and after cleaning the TB the IAC and replacing the MAF it ran like a new car. Very smooth. Use a toothbrush and plenty of towels for clean up. Well worth the effort.
 

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Registered
2003 Cadillac DeVille DHS
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20 Posts
Discussion Starter #5
Thanks everyone. Wow was it a pill to clean! I hadn't realized just how neglected my engine really was.
 

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Registered
96 FWB
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1,026 Posts
Goodness gracious, you're not going to pass up a perfect before-after photo op now are you?
 
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