I think he does not know. I'm working on the idea that he tried to move it
by hand and it would not move, not that he looked inside and discovered it
was closed.

And, I played with the intake on my Dad's Ranger yesterday and unplugged
hoses while it was idling. Without additional gas to go along with the extra
air, the fuel mixture became lean, and the engine ultimately died.

You may be right, I'm not arguing your point. All I'm saying is that if the
throttle won't move and there is full throttle operation as soon as the
engine starts, I suspect the throttle is held full open, not full close.
This would give lots of gas and air, any other condition would give lots of
air but not much gas.




"Mike Romain" <romainm@sympatico.ca> wrote in message
news:47090ecf$0$11332$9a6e19ea@unlimited.newshosti ng.com...
>I believe the OP was implying the throttle plate was 'not open at all'. not
>that it 'couldn't' open at all.
>
> Mike
>
> Jeff Strickland wrote:
>> STOP
>>
>> He said that the throttle does not open. I think we have to make sure it
>> is not full open already before we go looking for leaks and other
>> gremlins.
>>
>> I happen to agree with the leak diagnosis, but since it is reported that
>> the throttle won't even open, I have to think the throttle is actually
>> Full Open already, and the fact that it doesn't budge needs to be
>> addressed before we start looking to gaskets and disconnected hoses.
>>
>>
>>
>>
>> "Mike Romain" <romainm@sympatico.ca> wrote in message
>> news:4708ee41$0$22717$9a6e19ea@unlimited.newshosti ng.com...
>>> That usually means you forgot to hook up a vacuum line. You have an air
>>> leak into the intake someplace likely.
>>>
>>> Mike
>>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>>> 88 Cherokee 235 BFG AT's - Gone to the rust pile...
>>> Canadian Off Road Trips Photos: Non members can still view!
>>> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
>>> (More Off Road album links at bottom of the view page)
>>>
>>> Glenn wrote:
>>>> Hi all, was trying to be a good brother today doing a major service
>>>> and repairing the cracked exhaust manifold on my sisters 99XJ.
>>>> Repairing the exhaust manifold obviously entails taking of the inlet
>>>> manifold, unplugging all the wires, fuel line off the fuel rail etc.
>>>> Everything went back together ok but when I fired it up, the engine
>>>> raced to max revs instantly, pretty sure it would rev till blew up
>>>> from the sound of it if I didn't switch it off. I can't understand how
>>>> it could do this, particularly since the throttle butterfly does not
>>>> open at all. I tried resetting the computer, no luck, I'm out of ideas
>>>> at the moment other than towing it to the nearest Jeep dealer, Any
>>>> idea's anyone???
>>>>
>>

 

On Sun, 07 Oct 2007 18:01:52 GMT, "Jeff Strickland"
<crwlr@verizon.net> wrote:

>I think he does not know. I'm working on the idea that he tried to move it
>by hand and it would not move, not that he looked inside and discovered it
>was closed.
>
>And, I played with the intake on my Dad's Ranger yesterday and unplugged
>hoses while it was idling. Without additional gas to go along with the extra
>air, the fuel mixture became lean, and the engine ultimately died.

Apples and oranges. Trying to prove your "theory" about a Jeep by
experimenting on a Ford really doesn't make much sense. The Ford
(assuming fairly late model and fuel injected) has a mass airflow
system and the Jeep has a speed density system. Two different ways of
calculating how much air is coming into the engine. The mass airflow
system gets lean. The speed density system adds fuel to go with the
additional air.

>
>You may be right, I'm not arguing your point. All I'm saying is that if the
>throttle won't move and there is full throttle operation as soon as the
>engine starts, I suspect the throttle is held full open, not full close.
>This would give lots of gas and air, any other condition would give lots of
>air but not much gas.

The OP just removed the intake and replaced the exhaust manifold.
While he's probably nowhere near as smart as you, I'd bet he can look
at the throttle plate and know if it was open or closed...

>
>
>
>
>"Mike Romain" <romainm@sympatico.ca> wrote in message
>news:47090ecf$0$11332$9a6e19ea@unlimited.newshost ing.com...
>>I believe the OP was implying the throttle plate was 'not open at all'. not
>>that it 'couldn't' open at all.
>>
>> Mike
>>
>> Jeff Strickland wrote:
>>> STOP
>>>
>>> He said that the throttle does not open. I think we have to make sure it
>>> is not full open already before we go looking for leaks and other
>>> gremlins.
>>>
>>> I happen to agree with the leak diagnosis, but since it is reported that
>>> the throttle won't even open, I have to think the throttle is actually
>>> Full Open already, and the fact that it doesn't budge needs to be
>>> addressed before we start looking to gaskets and disconnected hoses.
>>>
>>>
>>>
>>>
>>> "Mike Romain" <romainm@sympatico.ca> wrote in message
>>> news:4708ee41$0$22717$9a6e19ea@unlimited.newshosti ng.com...
>>>> That usually means you forgot to hook up a vacuum line. You have an air
>>>> leak into the intake someplace likely.
>>>>
>>>> Mike
>>>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>>>> 88 Cherokee 235 BFG AT's - Gone to the rust pile...
>>>> Canadian Off Road Trips Photos: Non members can still view!
>>>> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
>>>> (More Off Road album links at bottom of the view page)
>>>>
>>>> Glenn wrote:
>>>>> Hi all, was trying to be a good brother today doing a major service
>>>>> and repairing the cracked exhaust manifold on my sisters 99XJ.
>>>>> Repairing the exhaust manifold obviously entails taking of the inlet
>>>>> manifold, unplugging all the wires, fuel line off the fuel rail etc.
>>>>> Everything went back together ok but when I fired it up, the engine
>>>>> raced to max revs instantly, pretty sure it would rev till blew up
>>>>> from the sound of it if I didn't switch it off. I can't understand how
>>>>> it could do this, particularly since the throttle butterfly does not
>>>>> open at all. I tried resetting the computer, no luck, I'm out of ideas
>>>>> at the moment other than towing it to the nearest Jeep dealer, Any
>>>>> idea's anyone???
>>>>>
>>>

 

On Sun, 07 Oct 2007 18:01:52 GMT, "Jeff Strickland"
<crwlr@verizon.net> wrote:

>I think he does not know. I'm working on the idea that he tried to move it
>by hand and it would not move, not that he looked inside and discovered it
>was closed.
>
>And, I played with the intake on my Dad's Ranger yesterday and unplugged
>hoses while it was idling. Without additional gas to go along with the extra
>air, the fuel mixture became lean, and the engine ultimately died.

Apples and oranges. Trying to prove your "theory" about a Jeep by
experimenting on a Ford really doesn't make much sense. The Ford
(assuming fairly late model and fuel injected) has a mass airflow
system and the Jeep has a speed density system. Two different ways of
calculating how much air is coming into the engine. The mass airflow
system gets lean. The speed density system adds fuel to go with the
additional air.

>
>You may be right, I'm not arguing your point. All I'm saying is that if the
>throttle won't move and there is full throttle operation as soon as the
>engine starts, I suspect the throttle is held full open, not full close.
>This would give lots of gas and air, any other condition would give lots of
>air but not much gas.

The OP just removed the intake and replaced the exhaust manifold.
While he's probably nowhere near as smart as you, I'd bet he can look
at the throttle plate and know if it was open or closed...

>
>
>
>
>"Mike Romain" <romainm@sympatico.ca> wrote in message
>news:47090ecf$0$11332$9a6e19ea@unlimited.newshost ing.com...
>>I believe the OP was implying the throttle plate was 'not open at all'. not
>>that it 'couldn't' open at all.
>>
>> Mike
>>
>> Jeff Strickland wrote:
>>> STOP
>>>
>>> He said that the throttle does not open. I think we have to make sure it
>>> is not full open already before we go looking for leaks and other
>>> gremlins.
>>>
>>> I happen to agree with the leak diagnosis, but since it is reported that
>>> the throttle won't even open, I have to think the throttle is actually
>>> Full Open already, and the fact that it doesn't budge needs to be
>>> addressed before we start looking to gaskets and disconnected hoses.
>>>
>>>
>>>
>>>
>>> "Mike Romain" <romainm@sympatico.ca> wrote in message
>>> news:4708ee41$0$22717$9a6e19ea@unlimited.newshosti ng.com...
>>>> That usually means you forgot to hook up a vacuum line. You have an air
>>>> leak into the intake someplace likely.
>>>>
>>>> Mike
>>>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>>>> 88 Cherokee 235 BFG AT's - Gone to the rust pile...
>>>> Canadian Off Road Trips Photos: Non members can still view!
>>>> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
>>>> (More Off Road album links at bottom of the view page)
>>>>
>>>> Glenn wrote:
>>>>> Hi all, was trying to be a good brother today doing a major service
>>>>> and repairing the cracked exhaust manifold on my sisters 99XJ.
>>>>> Repairing the exhaust manifold obviously entails taking of the inlet
>>>>> manifold, unplugging all the wires, fuel line off the fuel rail etc.
>>>>> Everything went back together ok but when I fired it up, the engine
>>>>> raced to max revs instantly, pretty sure it would rev till blew up
>>>>> from the sound of it if I didn't switch it off. I can't understand how
>>>>> it could do this, particularly since the throttle butterfly does not
>>>>> open at all. I tried resetting the computer, no luck, I'm out of ideas
>>>>> at the moment other than towing it to the nearest Jeep dealer, Any
>>>>> idea's anyone???
>>>>>
>>>

 

On Sun, 07 Oct 2007 18:01:52 GMT, "Jeff Strickland"
<crwlr@verizon.net> wrote:

>I think he does not know. I'm working on the idea that he tried to move it
>by hand and it would not move, not that he looked inside and discovered it
>was closed.
>
>And, I played with the intake on my Dad's Ranger yesterday and unplugged
>hoses while it was idling. Without additional gas to go along with the extra
>air, the fuel mixture became lean, and the engine ultimately died.

Apples and oranges. Trying to prove your "theory" about a Jeep by
experimenting on a Ford really doesn't make much sense. The Ford
(assuming fairly late model and fuel injected) has a mass airflow
system and the Jeep has a speed density system. Two different ways of
calculating how much air is coming into the engine. The mass airflow
system gets lean. The speed density system adds fuel to go with the
additional air.

>
>You may be right, I'm not arguing your point. All I'm saying is that if the
>throttle won't move and there is full throttle operation as soon as the
>engine starts, I suspect the throttle is held full open, not full close.
>This would give lots of gas and air, any other condition would give lots of
>air but not much gas.

The OP just removed the intake and replaced the exhaust manifold.
While he's probably nowhere near as smart as you, I'd bet he can look
at the throttle plate and know if it was open or closed...

>
>
>
>
>"Mike Romain" <romainm@sympatico.ca> wrote in message
>news:47090ecf$0$11332$9a6e19ea@unlimited.newshost ing.com...
>>I believe the OP was implying the throttle plate was 'not open at all'. not
>>that it 'couldn't' open at all.
>>
>> Mike
>>
>> Jeff Strickland wrote:
>>> STOP
>>>
>>> He said that the throttle does not open. I think we have to make sure it
>>> is not full open already before we go looking for leaks and other
>>> gremlins.
>>>
>>> I happen to agree with the leak diagnosis, but since it is reported that
>>> the throttle won't even open, I have to think the throttle is actually
>>> Full Open already, and the fact that it doesn't budge needs to be
>>> addressed before we start looking to gaskets and disconnected hoses.
>>>
>>>
>>>
>>>
>>> "Mike Romain" <romainm@sympatico.ca> wrote in message
>>> news:4708ee41$0$22717$9a6e19ea@unlimited.newshosti ng.com...
>>>> That usually means you forgot to hook up a vacuum line. You have an air
>>>> leak into the intake someplace likely.
>>>>
>>>> Mike
>>>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>>>> 88 Cherokee 235 BFG AT's - Gone to the rust pile...
>>>> Canadian Off Road Trips Photos: Non members can still view!
>>>> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
>>>> (More Off Road album links at bottom of the view page)
>>>>
>>>> Glenn wrote:
>>>>> Hi all, was trying to be a good brother today doing a major service
>>>>> and repairing the cracked exhaust manifold on my sisters 99XJ.
>>>>> Repairing the exhaust manifold obviously entails taking of the inlet
>>>>> manifold, unplugging all the wires, fuel line off the fuel rail etc.
>>>>> Everything went back together ok but when I fired it up, the engine
>>>>> raced to max revs instantly, pretty sure it would rev till blew up
>>>>> from the sound of it if I didn't switch it off. I can't understand how
>>>>> it could do this, particularly since the throttle butterfly does not
>>>>> open at all. I tried resetting the computer, no luck, I'm out of ideas
>>>>> at the moment other than towing it to the nearest Jeep dealer, Any
>>>>> idea's anyone???
>>>>>
>>>

 

On Sun, 07 Oct 2007 18:01:52 GMT, "Jeff Strickland"
<crwlr@verizon.net> wrote:

>I think he does not know. I'm working on the idea that he tried to move it
>by hand and it would not move, not that he looked inside and discovered it
>was closed.
>
>And, I played with the intake on my Dad's Ranger yesterday and unplugged
>hoses while it was idling. Without additional gas to go along with the extra
>air, the fuel mixture became lean, and the engine ultimately died.

Apples and oranges. Trying to prove your "theory" about a Jeep by
experimenting on a Ford really doesn't make much sense. The Ford
(assuming fairly late model and fuel injected) has a mass airflow
system and the Jeep has a speed density system. Two different ways of
calculating how much air is coming into the engine. The mass airflow
system gets lean. The speed density system adds fuel to go with the
additional air.

>
>You may be right, I'm not arguing your point. All I'm saying is that if the
>throttle won't move and there is full throttle operation as soon as the
>engine starts, I suspect the throttle is held full open, not full close.
>This would give lots of gas and air, any other condition would give lots of
>air but not much gas.

The OP just removed the intake and replaced the exhaust manifold.
While he's probably nowhere near as smart as you, I'd bet he can look
at the throttle plate and know if it was open or closed...

>
>
>
>
>"Mike Romain" <romainm@sympatico.ca> wrote in message
>news:47090ecf$0$11332$9a6e19ea@unlimited.newshost ing.com...
>>I believe the OP was implying the throttle plate was 'not open at all'. not
>>that it 'couldn't' open at all.
>>
>> Mike
>>
>> Jeff Strickland wrote:
>>> STOP
>>>
>>> He said that the throttle does not open. I think we have to make sure it
>>> is not full open already before we go looking for leaks and other
>>> gremlins.
>>>
>>> I happen to agree with the leak diagnosis, but since it is reported that
>>> the throttle won't even open, I have to think the throttle is actually
>>> Full Open already, and the fact that it doesn't budge needs to be
>>> addressed before we start looking to gaskets and disconnected hoses.
>>>
>>>
>>>
>>>
>>> "Mike Romain" <romainm@sympatico.ca> wrote in message
>>> news:4708ee41$0$22717$9a6e19ea@unlimited.newshosti ng.com...
>>>> That usually means you forgot to hook up a vacuum line. You have an air
>>>> leak into the intake someplace likely.
>>>>
>>>> Mike
>>>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>>>> 88 Cherokee 235 BFG AT's - Gone to the rust pile...
>>>> Canadian Off Road Trips Photos: Non members can still view!
>>>> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
>>>> (More Off Road album links at bottom of the view page)
>>>>
>>>> Glenn wrote:
>>>>> Hi all, was trying to be a good brother today doing a major service
>>>>> and repairing the cracked exhaust manifold on my sisters 99XJ.
>>>>> Repairing the exhaust manifold obviously entails taking of the inlet
>>>>> manifold, unplugging all the wires, fuel line off the fuel rail etc.
>>>>> Everything went back together ok but when I fired it up, the engine
>>>>> raced to max revs instantly, pretty sure it would rev till blew up
>>>>> from the sound of it if I didn't switch it off. I can't understand how
>>>>> it could do this, particularly since the throttle butterfly does not
>>>>> open at all. I tried resetting the computer, no luck, I'm out of ideas
>>>>> at the moment other than towing it to the nearest Jeep dealer, Any
>>>>> idea's anyone???
>>>>>
>>>

 

The intake is not seated on the head, loosen the bolts and rock it into
place, and re-torque.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

"Glenn" <jeepthing66@hotmail.com> wrote in message
news:1191757548.916842.97010@50g2000hsm.googlegrou ps.com...
> Hi all, was trying to be a good brother today doing a major service
> and repairing the cracked exhaust manifold on my sisters 99XJ.
> Repairing the exhaust manifold obviously entails taking of the inlet
> manifold, unplugging all the wires, fuel line off the fuel rail etc.
> Everything went back together ok but when I fired it up, the engine
> raced to max revs instantly, pretty sure it would rev till blew up
> from the sound of it if I didn't switch it off. I can't understand how
> it could do this, particularly since the throttle butterfly does not
> open at all. I tried resetting the computer, no luck, I'm out of ideas
> at the moment other than towing it to the nearest Jeep dealer, Any
> idea's anyone???
>



--
Posted via a free Usenet account from http://www.teranews.com

 

The intake is not seated on the head, loosen the bolts and rock it into
place, and re-torque.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

"Glenn" <jeepthing66@hotmail.com> wrote in message
news:1191757548.916842.97010@50g2000hsm.googlegrou ps.com...
> Hi all, was trying to be a good brother today doing a major service
> and repairing the cracked exhaust manifold on my sisters 99XJ.
> Repairing the exhaust manifold obviously entails taking of the inlet
> manifold, unplugging all the wires, fuel line off the fuel rail etc.
> Everything went back together ok but when I fired it up, the engine
> raced to max revs instantly, pretty sure it would rev till blew up
> from the sound of it if I didn't switch it off. I can't understand how
> it could do this, particularly since the throttle butterfly does not
> open at all. I tried resetting the computer, no luck, I'm out of ideas
> at the moment other than towing it to the nearest Jeep dealer, Any
> idea's anyone???
>



--
Posted via a free Usenet account from http://www.teranews.com

 

The intake is not seated on the head, loosen the bolts and rock it into
place, and re-torque.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

"Glenn" <jeepthing66@hotmail.com> wrote in message
news:1191757548.916842.97010@50g2000hsm.googlegrou ps.com...
> Hi all, was trying to be a good brother today doing a major service
> and repairing the cracked exhaust manifold on my sisters 99XJ.
> Repairing the exhaust manifold obviously entails taking of the inlet
> manifold, unplugging all the wires, fuel line off the fuel rail etc.
> Everything went back together ok but when I fired it up, the engine
> raced to max revs instantly, pretty sure it would rev till blew up
> from the sound of it if I didn't switch it off. I can't understand how
> it could do this, particularly since the throttle butterfly does not
> open at all. I tried resetting the computer, no luck, I'm out of ideas
> at the moment other than towing it to the nearest Jeep dealer, Any
> idea's anyone???
>



--
Posted via a free Usenet account from http://www.teranews.com

 

The intake is not seated on the head, loosen the bolts and rock it into
place, and re-torque.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

"Glenn" <jeepthing66@hotmail.com> wrote in message
news:1191757548.916842.97010@50g2000hsm.googlegrou ps.com...
> Hi all, was trying to be a good brother today doing a major service
> and repairing the cracked exhaust manifold on my sisters 99XJ.
> Repairing the exhaust manifold obviously entails taking of the inlet
> manifold, unplugging all the wires, fuel line off the fuel rail etc.
> Everything went back together ok but when I fired it up, the engine
> raced to max revs instantly, pretty sure it would rev till blew up
> from the sound of it if I didn't switch it off. I can't understand how
> it could do this, particularly since the throttle butterfly does not
> open at all. I tried resetting the computer, no luck, I'm out of ideas
> at the moment other than towing it to the nearest Jeep dealer, Any
> idea's anyone???
>



--
Posted via a free Usenet account from http://www.teranews.com

 

"bllsht" <nospam@dot.net> wrote in message
news:haeig39i876dc6o7jd4cj28ipa92iusfh0@4ax.com...
> On Sun, 07 Oct 2007 18:01:52 GMT, "Jeff Strickland"
> <crwlr@verizon.net> wrote:
>
>>I think he does not know. I'm working on the idea that he tried to move it
>>by hand and it would not move, not that he looked inside and discovered it
>>was closed.
>>
>>And, I played with the intake on my Dad's Ranger yesterday and unplugged
>>hoses while it was idling. Without additional gas to go along with the
>>extra
>>air, the fuel mixture became lean, and the engine ultimately died.
>
> Apples and oranges. Trying to prove your "theory" about a Jeep by
> experimenting on a Ford really doesn't make much sense. The Ford
> (assuming fairly late model and fuel injected) has a mass airflow
> system and the Jeep has a speed density system. Two different ways of
> calculating how much air is coming into the engine. The mass airflow
> system gets lean. The speed density system adds fuel to go with the
> additional air.
>

Really!? It can add enough fuel to blow up the motor when it should be at
idle? That would make a very dangerous condition on the trail. Lose a vac
line while rock crawling and immediately suffer full throttle operation in
Low Range. That could be a serious problem, don't you think? I'm not sure my
CJ's brakes can stop in full throttle and low range, 1st or 2nd gear.

Put an inexperienced driver in a situation where a vac leak might come about
and the engine goes to full throttle operation as a result, and there can
easily be lives in the balance.

I'm pretty sure that while there might be a slight increase in idle speed, I
would not expect a condition where one would be concerned with blowing an
engine at what is expected to be an idling situation.



>>
>>You may be right, I'm not arguing your point. All I'm saying is that if
>>the
>>throttle won't move and there is full throttle operation as soon as the
>>engine starts, I suspect the throttle is held full open, not full close.
>>This would give lots of gas and air, any other condition would give lots
>>of
>>air but not much gas.
>
> The OP just removed the intake and replaced the exhaust manifold.
> While he's probably nowhere near as smart as you, I'd bet he can look
> at the throttle plate and know if it was open or closed...
>

You're right, I completely clueless -- except for the part where I converted
my Jeep from the crappy BBD carburator to full Multi Port Fuel Injection. I
have no idea.

The OP is not clear that he looked, or simply noticed that the linkage would
not move by hand.

Murphy's Law states that the simplist thing to fix is the most likely
problem. Assuming that is true, all I'm saying is that the linkage needs to
be checked to be sure the throttle is not already full open when it is
expected to be full closed.