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97 suburben 454 check engine light on after new cam instal..

  
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bobzilla71

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Since: Sep 28, 2005
Posts: 3



(Msg. 1) Posted: Wed Sep 28, 2005 9:32 pm
Post subject: 97 suburben 454 check engine light on after new cam install
Archived from groups: alt>autos>gm (more info?)
I just installed a new ISKY cam shaft and all new lifters in this 454.
After this was done the check engine light came on . The read out says its
"on board computer controlled ignition /missfire" ? The cam is a high
performance cam but was told that no other mods were needed for this cam
application.I also replaced the cap,roter and plugs.
I did fail to replace the spark plug wires though? DUH.. And the were
pretty dry and cracking.
Any sugestions before i take it to the dealer would be helpfull..
Other then the light on it seems to be runningv fine. THANKS BOB...

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Steve Mackie

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Since: Jul 27, 2005
Posts: 200



(Msg. 2) Posted: Wed Sep 28, 2005 10:55 pm
Post subject: Re: 97 suburben 454 check engine light on after new cam inst [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
You'd really have to get the codes to find out what the problem is.

"bobzilla71" <callofduty.DeleteThis@cox.net> wrote in message
news:c86505d70843d00f4ced94c751331d63@localhost.talkaboutautos.com...
> I just installed a new ISKY cam shaft and all new lifters in this 454.
> After this was done the check engine light came on . The read out says its
> "on board computer controlled ignition /missfire" ? The cam is a high
> performance cam but was told that no other mods were needed for this cam
> application.I also replaced the cap,roter and plugs.
> I did fail to replace the spark plug wires though? DUH.. And the were
> pretty dry and cracking.
> Any sugestions before i take it to the dealer would be helpfull..
> Other then the light on it seems to be runningv fine. THANKS BOB...
>

 >> Stay informed about: 97 suburben 454 check engine light on after new cam instal.. 
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bobzilla71

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Since: Sep 28, 2005
Posts: 3



(Msg. 3) Posted: Wed Sep 28, 2005 11:37 pm
Post subject: Re: 97 suburben 454 check engine light on after new cam inst [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
Will the reader at the auto zone get the codes i need, because that is
what i did when it said"on board computer controlled ingnition/missfire" .
I thought that was what they read on the devise they pluged in under the
dash? Should i go back and do it again and ask for the codes? THANKS
BOB.
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Steve Mackie

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Since: Jul 27, 2005
Posts: 200



(Msg. 4) Posted: Thu Sep 29, 2005 8:55 am
Post subject: Re: 97 suburben 454 check engine light on after new cam inst [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
Description is nice, but the actual code(s) is better.

"bobzilla71" <callofduty DeleteThis @cox.net> wrote in message
news:45e2fa333b10fd7c41070698ac54cc93@localhost.talkaboutautos.com...
> Will the reader at the auto zone get the codes i need, because that is
> what i did when it said"on board computer controlled ingnition/missfire" .
> I thought that was what they read on the devise they pluged in under the
> dash? Should i go back and do it again and ask for the codes? THANKS
> BOB.
>
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bobzilla71

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Since: Sep 28, 2005
Posts: 3



(Msg. 5) Posted: Thu Sep 29, 2005 7:32 pm
Post subject: Re: 97 suburben 454 check engine light on after new cam inst [Login to view extended thread Info.]
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Thanks steve i got the code it is p1345 thanks for the help!!!! Bob..
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Steve Mackie

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Since: Jul 27, 2005
Posts: 200



(Msg. 6) Posted: Thu Sep 29, 2005 8:55 pm
Post subject: Re: 97 suburben 454 check engine light on after new cam inst [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
Makes sense now Here's a few things to check:

Loose or missing distributor hold down bolt
Loose CMP sensor caseing a variance in the sensor signal
Incorrectly installed distributor, possibly one tooth off in either
direction.
Loose distributor rotor.
Excessive freeplay in timing chain and gear assembly.

Steve

"bobzilla71" <callofduty.DeleteThis@cox.net> wrote in message
news:bbdd2ea3f3c1cfdd80261edeb2aeba7b@localhost.talkaboutautos.com...
> Thanks steve i got the code it is p1345 thanks for the help!!!! Bob..
>
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