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PLEASE HELP!! 95 Grand Prix Issues
- 06-14-2012
- audioman24
June 14, 2012, 11:52 am
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I have a 95 grand prix se 3.1 and i have put a new radiator, water pump,
power steering pump and lines, new radiator hoses, thermostat,(but temp
doesnt show on dash even though i put a new cluster)and other little
things it recently had a head gasket change.Ok my issue is its overheating
while in park but not when driving and the fans dont come on also it
hesitates to start sometimes but when it does it will high rev up to 2.5
then slowly go down sometimes.also when i go to hit the gas it will
sputter like it isnt getting gas maybe fuel fiter??? anyways its giving me
trouble i usually do all the work on my vehicle im a quick learner im in
college doing collision repair so i need to save as much as possible all
advice and help will be greatly appreciated and not took for granted can
somebody walk me through this i have 3 kids this car is our life!!! God is
with me but i need some mechanic help i just drained the radiator fluid
and put 50/50 dex cool i put the plug back,.. opened the bleeder valve on
the upper radiator hose to make sure no air until fluid came out then
filled the resivoir till cold mark,... left radiator cap off started it,..
it went down so i put more fluid till it reached the base of the neck of
radiator. put the cap back on then felt the hose get hot is that right??
please help with any info about this vehicle. thank you for your time. God
bless you
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Re: PLEASE HELP!! 95 Grand Prix Issues
It sounds like the fans or fan control circuit are faulty. If the
engine coolant sensor is not functioning the fan will never come on.
Unlike the 3.8, the 3.1 only has one fan.
The wires to the coolant sensor should be black and yellow. The black
is the sensor ground. The yellow should have 5 volts with the
connector disconnected. The sensor should read 1365 ohms at 100
degrees F and 55 ohms at 260 F.
Shorting the temp sensor should turn on the fan - but better to use a
resistor - a 56, 62, 68, or 75 ohm 1/4 or 1/2 watt will do the job and
ensure you don't damage anything. With the resistor in place and the
ignition on (engine running or not) you should hage 12 volts on the
blue wire at the fan.
If you do and the fan does not run, try "hotwiring" the fan. If it
runs then, the ground is the problem - and it is controlled by the
computer and the air conditioning. Just bypassing the black wire to
ground will stop the overheating.
If no power on the blue wire, check the fan relay. Terminal 85 on the
relay should be "hot" with the ignition on, ( from the ignition fuse)
and terminal 87 should be hot at all times. The computer grounds
Terminal86, energizing the coil which puts power to terminal30. In a
pinch you can put a switch across 87 to 30 to turn the fan on and
off. If no power on terminal 87 you have a bad connection to the
battery - possibly a bad fusible link (connects to the starter
solenoid).
After you've gone through that if you have not found the problem or
fixed it, let me know and we can dig deaper.
Re: PLEASE HELP!! 95 Grand Prix Issues
http://www.motorsforum.com/pontiac/please-help-95-grand-prix-issues-22555-.htm
audioman24 wrote:
clare wrote:
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Re: PLEASE HELP!! 95 Grand Prix Issues
http://www.motorsforum.com/pontiac/please-help-95-grand-prix-issues-22555-.htm
audioman24 wrote:
clare wrote:
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Thank you so much but i need to hear you say this thing about the fans is
there any way you can call me 17319282342 im getting a diagnostics today
but the fans still dont work and sometimes when i barely push the gas its
like it pauses before it takes off..maybe a vaccum??? but the oil just got
changed the radiator just got drained and new fluid added. how could i get
my temp to work its hooked in to the thermostat what colors are the wires
can i rig tht or??? i do better at listening than reading lol but if not
please respond in detail thank you and god bless you
Re: PLEASE HELP!! 95 Grand Prix Issues
http://www.motorsforum.com/pontiac/please-help-95-grand-prix-issues-22555-.htm
audioman24 wrote:
clare wrote:
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