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Author
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Topic: Detonation what the hell
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89SC50
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Member # 6248
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posted
 
 
since converting to 5spd from aod I have detonation proplems at stock timining with premium feul. it was not a problem with 18* advance with the aod never did it once. It is a stock motor with bolt-ons just put in a9l didnt help, are there any other reasons for this the advance comes from the ecu right?
Posts: 185 | From: santa rosa | Registered: Nov 2005
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89SC50
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Member # 6248
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posted
or could there be a sensor gone bad that is giving the ecu bad data and causing it to do somthing like advance it to much?
Posts: 185 | From: santa rosa | Registered: Nov 2005
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50DADDY
CAFords OG
Member # 3076
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posted
18 degrees ![[Eek!]](eek.gif)
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"Im not stupid,i just act that way so i dont make you dummies uncomfortable."
"Old age and treachery shall overcome youth and skill."
Posts: 4827 | From: Suckramento | Registered: Jul 2003
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92stangLX
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Member # 3252
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posted
quote:
Originally posted by 50DADDY:
18 degrees
Yeah no shit Set the timing at 14 degrees and see if it still detonates. If it does then keep retarding the timing.
Are you running 91 octane?
Posts: 5302 | From: San Francisco | Registered: Sep 2003
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89SC50
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Member # 6248
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posted
at 10* it detonates with premium.
Posts: 185 | From: santa rosa | Registered: Nov 2005
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92stangLX
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Member # 3252
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posted
quote:
Originally posted by 89SC50:
at 10* it detonates with premium.
Did you pull the distributor recently? It sounds like your timing is off.
Posts: 5302 | From: San Francisco | Registered: Sep 2003
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89SC50
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Member # 6248
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posted
The distributor was pulled a while back at a shop, is there a way I can tell that it is off by looking at it or how can I test it? thanks for the help I am going crazy.
Posts: 185 | From: santa rosa | Registered: Nov 2005
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89SC50
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Member # 6248
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posted
The distributor was pulled a while back at a shop, is there a way I can tell that it is off by looking at it or how can I test it? thanks for the help I am going crazy.
Posts: 185 | From: santa rosa | Registered: Nov 2005
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Curt
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Member # 6254
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posted
pull the plug outta number 1 (its the first on the passengers side) and put a pipe cleaner in there, or a straw, and have somebody crank it, when the pipecleaner is at its highest point have them stop and look at the number one position on the dist, if its not pull it out adjust it
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'90 GT
'94 Toyota 4wd "It have problem"
'56 F100 5.8 AFR185's Vortech SC S-trim
Posts: 866 | From: Monterey/Rocklin | Registered: Nov 2005
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88gt
Custom
Member # 579
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posted
You will need a timing light to know for sure what your timing is. In the meantime, are you running 91 gasoline?
Posts: 1482 | From: Santa Clara/Bay area | Registered: Nov 2001
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