Re: 97 ZJ V8 JGC Wont idle when cold - Solved
 

Thanks,
I got the truck in 2000, its a 97, i figured a new IAC motor wasnt to
gross an indulgance.
How long a drill bit?

I will look up the Idle bypass port/Jet screw in the shop
manual/Alldata.
I am not a mechanic so things take a little longer:-)

thx,
james

Will Honea wrote:
> You could probably have saved $80 by cleaning the old IAC and the
> passages. As one last tweek, there is an idle bypass port with an
> adjustment screw under one of those "tamper proof" covers. When I got
> this Jeep, it was so plugged I had to look close to find the top of
> the hole! That one took a long drill bit and nearly a can of cleaner
> to open up - it runs all the way down into the manifold and you have
> to remove the jet screw (count the turns!) to get all the way down
> from the top of the throttle body.
>
> On Wed, 25 Oct 2006 17:23:31 UTC "jamest" <jamest@sympatico.ca> wrote:
>
> > billy ray is the man!! - Thanks
> >
> > $10 - Poured in a bottle of fuel system/injector cleaner into a full
> > tank of gas .
> > Seemd a little better...
> > $10 - Sprayed in TB cleaner and took it out for run on the freeway.
> > Better yet...
> > $80 - Picked up a new IAC Motor and changed it ( the old one was carbon
> > city ).
> > Sprayed a little TB cleaner in the IAC air passage and wiped out a lot
> > of carbon from there.
> > WOW..
> >
> > It didnt run this smooth the day I bought it. Amazing, best $100 i ever
> > spent on it.
> >
> > Thanks Again
> > jamest
> >
> > billy ray wrote:
> > > Excerpt from the '96 ZJ manual engine diagnosis 'Rough Idle"
> > >
> > > http://i112.photobucket.com/albums/n...JRoughIdle.jpg
> > >
> > >
> > > While not required a thorough cleaning of the throttle body assemble, Idle
> > > air passages, fuel system and injectors wouldn't hurt and only costs $12-$20
> > > depending on brands and how thorough you need or want to clean.
> > >
> > >
> > > "jamest" <jamest@sympatico.ca> wrote in message
> > > news:1161444065.150595.311440@e3g2000cwe.googlegro ups.com...
> > > > Greetings,
> > > >
> > > > My 1997 ZJ will not idle when cold.
> > > >
> > > > It happened 2 weeks ago and we cleaned the battery terminals, checked
> > > > grounds, and it all seemed good. After the cleaning truck ran fine. it
> > > > has about 75,000 miles on it an i take good care of it.
> > > >
> > > > But this morning it was about 37 degrees, and it wont idle unless you
> > > > run it at about 1500 RPM.
> > > >
> > > > After warming up , engine would idle normally. Have checked the
> > > > alternator
> > > > voltage, no codes appear other than the 55 code.
> > > >
> > > > Any pointer appreciated, regards,
> > > >
> > > > james
> > > >
> >
>
>
> --
> Will Honea

Re: 97 ZJ V8 JGC Wont idle when cold - Solved
 

Thanks,
I got the truck in 2000, its a 97, i figured a new IAC motor wasnt to
gross an indulgance.
How long a drill bit?

I will look up the Idle bypass port/Jet screw in the shop
manual/Alldata.
I am not a mechanic so things take a little longer:-)

thx,
james

Will Honea wrote:
> You could probably have saved $80 by cleaning the old IAC and the
> passages. As one last tweek, there is an idle bypass port with an
> adjustment screw under one of those "tamper proof" covers. When I got
> this Jeep, it was so plugged I had to look close to find the top of
> the hole! That one took a long drill bit and nearly a can of cleaner
> to open up - it runs all the way down into the manifold and you have
> to remove the jet screw (count the turns!) to get all the way down
> from the top of the throttle body.
>
> On Wed, 25 Oct 2006 17:23:31 UTC "jamest" <jamest@sympatico.ca> wrote:
>
> > billy ray is the man!! - Thanks
> >
> > $10 - Poured in a bottle of fuel system/injector cleaner into a full
> > tank of gas .
> > Seemd a little better...
> > $10 - Sprayed in TB cleaner and took it out for run on the freeway.
> > Better yet...
> > $80 - Picked up a new IAC Motor and changed it ( the old one was carbon
> > city ).
> > Sprayed a little TB cleaner in the IAC air passage and wiped out a lot
> > of carbon from there.
> > WOW..
> >
> > It didnt run this smooth the day I bought it. Amazing, best $100 i ever
> > spent on it.
> >
> > Thanks Again
> > jamest
> >
> > billy ray wrote:
> > > Excerpt from the '96 ZJ manual engine diagnosis 'Rough Idle"
> > >
> > > http://i112.photobucket.com/albums/n...JRoughIdle.jpg
> > >
> > >
> > > While not required a thorough cleaning of the throttle body assemble, Idle
> > > air passages, fuel system and injectors wouldn't hurt and only costs $12-$20
> > > depending on brands and how thorough you need or want to clean.
> > >
> > >
> > > "jamest" <jamest@sympatico.ca> wrote in message
> > > news:1161444065.150595.311440@e3g2000cwe.googlegro ups.com...
> > > > Greetings,
> > > >
> > > > My 1997 ZJ will not idle when cold.
> > > >
> > > > It happened 2 weeks ago and we cleaned the battery terminals, checked
> > > > grounds, and it all seemed good. After the cleaning truck ran fine. it
> > > > has about 75,000 miles on it an i take good care of it.
> > > >
> > > > But this morning it was about 37 degrees, and it wont idle unless you
> > > > run it at about 1500 RPM.
> > > >
> > > > After warming up , engine would idle normally. Have checked the
> > > > alternator
> > > > voltage, no codes appear other than the 55 code.
> > > >
> > > > Any pointer appreciated, regards,
> > > >
> > > > james
> > > >
> >
>
>
> --
> Will Honea

Re: 97 ZJ V8 JGC Wont idle when cold - Solved
 

Thanks,
I got the truck in 2000, its a 97, i figured a new IAC motor wasnt to
gross an indulgance.
How long a drill bit?

I will look up the Idle bypass port/Jet screw in the shop
manual/Alldata.
I am not a mechanic so things take a little longer:-)

thx,
james

Will Honea wrote:
> You could probably have saved $80 by cleaning the old IAC and the
> passages. As one last tweek, there is an idle bypass port with an
> adjustment screw under one of those "tamper proof" covers. When I got
> this Jeep, it was so plugged I had to look close to find the top of
> the hole! That one took a long drill bit and nearly a can of cleaner
> to open up - it runs all the way down into the manifold and you have
> to remove the jet screw (count the turns!) to get all the way down
> from the top of the throttle body.
>
> On Wed, 25 Oct 2006 17:23:31 UTC "jamest" <jamest@sympatico.ca> wrote:
>
> > billy ray is the man!! - Thanks
> >
> > $10 - Poured in a bottle of fuel system/injector cleaner into a full
> > tank of gas .
> > Seemd a little better...
> > $10 - Sprayed in TB cleaner and took it out for run on the freeway.
> > Better yet...
> > $80 - Picked up a new IAC Motor and changed it ( the old one was carbon
> > city ).
> > Sprayed a little TB cleaner in the IAC air passage and wiped out a lot
> > of carbon from there.
> > WOW..
> >
> > It didnt run this smooth the day I bought it. Amazing, best $100 i ever
> > spent on it.
> >
> > Thanks Again
> > jamest
> >
> > billy ray wrote:
> > > Excerpt from the '96 ZJ manual engine diagnosis 'Rough Idle"
> > >
> > > http://i112.photobucket.com/albums/n...JRoughIdle.jpg
> > >
> > >
> > > While not required a thorough cleaning of the throttle body assemble, Idle
> > > air passages, fuel system and injectors wouldn't hurt and only costs $12-$20
> > > depending on brands and how thorough you need or want to clean.
> > >
> > >
> > > "jamest" <jamest@sympatico.ca> wrote in message
> > > news:1161444065.150595.311440@e3g2000cwe.googlegro ups.com...
> > > > Greetings,
> > > >
> > > > My 1997 ZJ will not idle when cold.
> > > >
> > > > It happened 2 weeks ago and we cleaned the battery terminals, checked
> > > > grounds, and it all seemed good. After the cleaning truck ran fine. it
> > > > has about 75,000 miles on it an i take good care of it.
> > > >
> > > > But this morning it was about 37 degrees, and it wont idle unless you
> > > > run it at about 1500 RPM.
> > > >
> > > > After warming up , engine would idle normally. Have checked the
> > > > alternator
> > > > voltage, no codes appear other than the 55 code.
> > > >
> > > > Any pointer appreciated, regards,
> > > >
> > > > james
> > > >
> >
>
>
> --
> Will Honea