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Next: 93 525i radiator problem
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External
Since: Aug 17, 2006
Posts: 3
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(Msg. 1) Posted: Thu Aug 17, 2006 8:50 pm
Post subject: new long block=low idle speed, rough idle
Archived from groups: alt>trucks>chevy (more info?)
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Can anyone give me some input. I just put a new 350 long block in my
1993 chevy K1500 PU. I had the intake manifold cleaned at a machine
shop, New distrebutor, cap, rotor, wires, plugs, o2 sensor, fuel
filter, thourghly cleaned TBI carburator, every thing tourqed to spec.
Has plenty of power and no noticible hesatation when cruising at any
speed. Fuel pump was changed about 1 1/2 years ago. Starts right up.
BUT does not idle worth a #@!&* . Bad in park, worse in gear. very bad
when first stated in morning. Has been timed and re timed, all vacuume
hoses checked and rechecked, idle speed control valve checked and
cleaned. Please help with where to go from here. |
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External
Since: Oct 16, 2005
Posts: 9
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(Msg. 2) Posted: Thu Aug 17, 2006 9:44 pm
Post subject: Re: new long block=low idle speed, rough idle [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"arcwlf" wrote in message
> Can anyone give me some input. I just put a new 350 long block in my
> 1993 chevy K1500 PU. I had the intake manifold cleaned at a machine
> shop, New distrebutor, cap, rotor, wires, plugs, o2 sensor, fuel
> filter, thourghly cleaned TBI carburator, every thing tourqed to spec.
>
> Has plenty of power and no noticible hesatation when cruising at any
> speed. Fuel pump was changed about 1 1/2 years ago. Starts right up.
> BUT does not idle worth a #@!&* . Bad in park, worse in gear. very bad
> when first stated in morning. Has been timed and re timed, all vacuume
> hoses checked and rechecked, idle speed control valve checked and
> cleaned. Please help with where to go from here.
>
Crossed plug wire? |
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External
Since: Aug 11, 2004
Posts: 659
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(Msg. 3) Posted: Fri Aug 18, 2006 3:55 pm
Post subject: Re: new long block=low idle speed, rough idle [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"arcwlf" wrote in message
> Can anyone give me some input. I just put a new 350 long block in my
> 1993 chevy K1500 PU. I had the intake manifold cleaned at a machine
> shop, New distrebutor, cap, rotor, wires, plugs, o2 sensor, fuel
> filter, thourghly cleaned TBI carburator, every thing tourqed to spec.
>
> Has plenty of power and no noticible hesatation when cruising at any
> speed. Fuel pump was changed about 1 1/2 years ago. Starts right up.
> BUT does not idle worth a #@!&* . Bad in park, worse in gear. very bad
> when first stated in morning. Has been timed and re timed, all vacuume
> hoses checked and rechecked, idle speed control valve checked and
> cleaned. Please help with where to go from here.
>
what are the vacuum readings" How did you adjust the valves?
Whitelightning >> Stay informed about: new long block=low idle speed, rough idle |
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External
Since: Aug 17, 2006
Posts: 3
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(Msg. 4) Posted: Sat Aug 19, 2006 6:52 am
Post subject: Re: new long block=low idle speed, rough idle [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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klutz wrote:
> "arcwlf" wrote in message
>
> > Can anyone give me some input. I just put a new 350 long block in my
> > 1993 chevy K1500 PU. I had the intake manifold cleaned at a machine
> > shop, New distrebutor, cap, rotor, wires, plugs, o2 sensor, fuel
> > filter, thourghly cleaned TBI carburator, every thing tourqed to spec.
> >
> > Has plenty of power and no noticible hesatation when cruising at any
> > speed. Fuel pump was changed about 1 1/2 years ago. Starts right up.
> > BUT does not idle worth a #@!&* . Bad in park, worse in gear. very bad
> > when first stated in morning. Has been timed and re timed, all vacuume
> > hoses checked and rechecked, idle speed control valve checked and
> > cleaned. Please help with where to go from here.
> >
> Crossed plug wire?
No, I checked that possiblity . thanks. >> Stay informed about: new long block=low idle speed, rough idle |
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External
Since: Aug 17, 2006
Posts: 3
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(Msg. 5) Posted: Sat Aug 19, 2006 6:57 am
Post subject: Re: new long block=low idle speed, rough idle [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Whitelightning wrote:
> "arcwlf" wrote in message
>
> > Can anyone give me some input. I just put a new 350 long block in my
> > 1993 chevy K1500 PU. I had the intake manifold cleaned at a machine
> > shop, New distrebutor, cap, rotor, wires, plugs, o2 sensor, fuel
> > filter, thourghly cleaned TBI carburator, every thing tourqed to spec.
> >
> > Has plenty of power and no noticible hesatation when cruising at any
> > speed. Fuel pump was changed about 1 1/2 years ago. Starts right up.
> > BUT does not idle worth a #@!&* . Bad in park, worse in gear. very bad
> > when first stated in morning. Has been timed and re timed, all vacuume
> > hoses checked and rechecked, idle speed control valve checked and
> > cleaned. Please help with where to go from here.
> >
>
> what are the vacuum readings" How did you adjust the valves?
>
> Whitelightning
will do vacuum readings today. valves were adjusted at the factory and
all looked good when rotating the engine. No clater when runing but
will add that to my list as I run out of other possible solutions. >> Stay informed about: new long block=low idle speed, rough idle |
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External
Since: Aug 19, 2006
Posts: 1
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(Msg. 6) Posted: Sat Aug 19, 2006 11:55 am
Post subject: Re: new long block=low idle speed, rough idle [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Check EGR solenoid and valve. Either leaking by will make for a lousy idle.
Had a leaking solenoid on a '91 GMC 454 that ran great but idled lousy,
especially when cold. Try blocking off the EGR temporarily to see if idle
improves. If so, I would replace the solenoid first. BTW, blocking off the
valve or defective solenoid should set a code.
"arcwlf" wrote in message
>
> Whitelightning wrote:
>> "arcwlf" wrote in message
>>
>> > Can anyone give me some input. I just put a new 350 long block in my
>> > 1993 chevy K1500 PU. I had the intake manifold cleaned at a machine
>> > shop, New distrebutor, cap, rotor, wires, plugs, o2 sensor, fuel
>> > filter, thourghly cleaned TBI carburator, every thing tourqed to spec.
>> >
>> > Has plenty of power and no noticible hesatation when cruising at any
>> > speed. Fuel pump was changed about 1 1/2 years ago. Starts right up.
>> > BUT does not idle worth a #@!&* . Bad in park, worse in gear. very bad
>> > when first stated in morning. Has been timed and re timed, all vacuume
>> > hoses checked and rechecked, idle speed control valve checked and
>> > cleaned. Please help with where to go from here.
>> >
>>
>> what are the vacuum readings" How did you adjust the valves?
>>
>> Whitelightning
>
>
> will do vacuum readings today. valves were adjusted at the factory and
> all looked good when rotating the engine. No clater when runing but
> will add that to my list as I run out of other possible solutions.
> >> Stay informed about: new long block=low idle speed, rough idle |
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