Vehicle make/model = Oldsmoble / Silhouette
Year = 2001
Mileage = 209,000
Engine size = 3.4
dash lights = None
codes = None
work done prior = Pressure Regulator,thermostat at 200,000 miles,new
plugs at 190,000 Miles, fuel pump at 175,000
work done to repair = Just started to research
How found us = google
tip/donation yes
tech = ?JK,MW,KK,SF? Not sure who.
question = Starts then will die. If started and the throtle is slightly
press down it will stay running. If I release on the pedal the rpm
drops to 500 then lower and dies. While driving and coming to a stop
light at 20mph the rpm again will drop below 500 and die. Slowly releasing
the pedal below 1000 rpm and above 500 rpm. Trying to hold it steady it
will start to search.
With the amount of miles I am guessing it might be the TPI. Anyhelp
would be great.
JK:
Thank you for the tip / donation. A couple of things to look for.
Make sure the air duct between the air filter and the engine throttle body
are tight. If loose, this can cause your problem. Also check the breather
tube from the top of the duct to were it attaches to the top of the rear valve
cover under the ignition coils assembly. Never real tight in the v/cover, but
snug. Also check for vacuum leaks. These things could cause this problem,
as well as possibly setting a lean oxygen sensor code.
The other possibility is the Idle Air Control (IAC) valve is carboned up. It is
on the back side if the throttle body- -4 wire connector, 2 TORX screws hold
it on. Suggest remove the valve and clean carbon from valve and its bore,
as well as cleaning the throttle body plate and bore. Do not move the IAC
valve in and out as this may cause it to bind and not function, just clean it.
Low speed coolant fan wont come on until about 226 degrees.
I will send a resistance chart in a few moments for the coolant sensor.....
Year = 2001
Mileage = 209,000
Engine size = 3.4
dash lights = None
codes = None
work done prior = Pressure Regulator,thermostat at 200,000 miles,new
plugs at 190,000 Miles, fuel pump at 175,000
work done to repair = Just started to research
How found us = google
tip/donation yes
tech = ?JK,MW,KK,SF? Not sure who.
question = Starts then will die. If started and the throtle is slightly
press down it will stay running. If I release on the pedal the rpm
drops to 500 then lower and dies. While driving and coming to a stop
light at 20mph the rpm again will drop below 500 and die. Slowly releasing
the pedal below 1000 rpm and above 500 rpm. Trying to hold it steady it
will start to search.
With the amount of miles I am guessing it might be the TPI. Anyhelp
would be great.
JK:
Thank you for the tip / donation. A couple of things to look for.
Make sure the air duct between the air filter and the engine throttle body
are tight. If loose, this can cause your problem. Also check the breather
tube from the top of the duct to were it attaches to the top of the rear valve
cover under the ignition coils assembly. Never real tight in the v/cover, but
snug. Also check for vacuum leaks. These things could cause this problem,
as well as possibly setting a lean oxygen sensor code.
The other possibility is the Idle Air Control (IAC) valve is carboned up. It is
on the back side if the throttle body- -4 wire connector, 2 TORX screws hold
it on. Suggest remove the valve and clean carbon from valve and its bore,
as well as cleaning the throttle body plate and bore. Do not move the IAC
valve in and out as this may cause it to bind and not function, just clean it.
Low speed coolant fan wont come on until about 226 degrees.
I will send a resistance chart in a few moments for the coolant sensor.....
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