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1999 Pontiac Grand Am GT with PO 134 code reading

Won't idle, stalls ...changed idle air valve and throttle positioning sensor....still won't idle properly and stalls out.....ran good for 24 hours after changing parts

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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Papa Chan
  • 56 Answers

SOURCE: 1997 buick lasabre custom

It sounds like you have a vacuum leak or intake gaskets leaking. Try this. Start the engine and let it reach the idle it want to go to. Get you a can of Brake Clean and spray it around the intake manifold (it on the top center of the engine, you may have to removed a plastic cover) If the engine idle changes up or down then the intake gaskets are leaking hence your vacuum leak. I hope this will help you.

Posted on Jan 04, 2009

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johnsmith992
  • 37 Answers

SOURCE: Replace heater core in Pontiac Grand Am GT 3.4l

ram a sharp chissel or pointed head centre punch through the core and prise it out .,than tap the new one in place ,,,there u go bobs ure uncle

Posted on Jan 29, 2009

davidg65
  • 26 Answers

SOURCE: 2002 Pontiac Grand Prix Thermostat

as you face the engine the thermostat bell is on the right (drivers side) Follow the radiatoe hose. Remove the two bolts and raise the bell still attatched to the hose. the thermostat is there with the rubber seal. You can gently pry the thermostat out with a screwdriver or something similar. Put in new thermostat be sure it is the same as the old one, and then replace or change the seal (be sure it is the smae size and thickness as the old one as I got the wrong size from Napa) Then replace the bell, and tighten, but not over tighten. I hope this helps!

Posted on Jan 31, 2009

kad19692000
  • 5 Answers

SOURCE: l transmission fluid on a 2000 Pontiac Grand Am GT

Through dipstick tube if auto, pipe plug on side of trans. if manual transaxle

Posted on Mar 09, 2009

lastech
  • 408 Answers

SOURCE: my 1995 c220 benz air mass sensor, throttle valve

hello,try to clean your throttle valve actuator,sometimes the flap get sticky because of fumes of fuel,ty

Posted on Apr 16, 2009

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1 Answer

What does error codes 40 and 41 mean on my 1999 mitsubishi eclispe mean


11 Oxygen sensor fault.
12 Airflow sensor fault.
13 Intake air temp sensor fault.
14 Throttle position sensor (TPS) fault.
15 Idle speed control (ISC) motor position sensor fault.
21 Coolant temp sensor fault.
22 Crankshaft position (CKP) sesnor fault.
23 Camshaft position (CMP) sensor fault.
24 Vehicle speed sensor (VSS) fault.
25 Barometric (BARO) pressure sensor fault.
31 Knock sensor fault.
32 MAP sensor faulty.
36 Ignition timing adjustment signal fault.
39 Oxygen (O2) sensor fault.
41 Injector(s) fault
42 Fuel pump fault.
43 EGR fault.
44 Ignition coil (cylinders #1 & #4) fault.
52 Ignition coil (cylinders #2 & #5) fault.
53 Ignition coil (cylinders #3 & #6) fault.
55 Idle air control (IAC) valve position sensor fault.
59 Rear Oxygen (O2) sesnor fault.
61 Transaxle control module torque reduction signal fault.
62 Variable Induction control (VIC) valve position sensor fault.
71 Traction control (TC) vacuum valve solenoid fault.
72 Traction Control (TC) vent valve solenoid fault.

Sep 26, 2014 | 1999 Mitsubishi Eclipse

1 Answer

2000 jeep grand cherokee 4.0 stalls when brakes are applied.


definately a vacuum problem, try changing your pvc valve its under $5.00 and easy

Feb 04, 2013 | 2000 Jeep Grand Cherokee

2 Answers

Why does my 99 pontiac grand prix gtp supercharge keep stalling


I would check the idle air control valve before replacing anything.
The computer regulates the idle speed by controlling the amount of air entering the intake thru the throttle body.
The valve could be faulty, or the throttle body can be gummed up.
Is the check engine light on ?

Sep 22, 2012 | 1999 Pontiac Grand Prix

1 Answer

Where can i find the mass air senor on a 1990 pontiac grand prix please help!!!!!!!


This car doesn't use a Mass Airflow Sensor, it uses another way of measuring the air entering the engine.
The problem you have is likely caused by the problem listed below.

ngine stalling issue at low speeds

This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve. Buy a can of throttle valve cleaner from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control



Jun 11, 2012 | 1990 Pontiac Grand Prix

1 Answer

98 Grand Am GT 3.1 engine Very high idle when started. Sometimes you can shut it off and restart it and it will idle fine. Also using lots of gas. Have changed TPS, Iac, and EGR valve. No vacuum leaks can...


MASS AIR FLOW CAN CAUSE PROBLEMS IF ITS DIRTY OR SKEWED .YOUR IDLE AIR INLET PASSAGES OR THROTTLE BORE IS DIRTY OR FULL OF DEPOSITS.BESURE REPLACE EGR VALVE GASKET THE OLD GASKET WILL LEAK.CHECK FOR THROTTLE PLATE THROTTLE SHAFT OR LINKAGE IS DAMAGED OR STICKING.

Dec 30, 2010 | 1998 Pontiac Grand Am

1 Answer

My 1999 grand am gt 3400 h.o hesitates from idle and stalls if i stop or park on a hill and will do it over and over till i power break it to get out? It starts right back up but is very irritating? Have...


Sounds like a dirty mass air flow sensor but the hill thing is strange...Is the tank full when this happens? Could be a filter and would not hurt to change it (often neglected).

Jul 16, 2009 | 1999 Pontiac Grand Am GT

1 Answer

1998 Pontiac Grand AM GT motor revs


it would not be an O2 sensor, period, they would never cause a high idle, have u had this checked for trouble codes? A sticking idle speed control air bypass can cause this problem as well as a throttle position sensor, but run the codes, Kragen does it for free was well as other parts stores.

Mar 10, 2009 | 1998 Pontiac Grand Am

1 Answer

Poor idle on my 2000 grand am gt


egr valve,or throttle position sensor

Jul 07, 2008 | 2000 Pontiac Grand Am GT

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