Question about 1992 Pontiac Firebird

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My intake valve isnt opening

Why isn't my intake valve opening?

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  • xwithloadedg Nov 16, 2009

    its a v6 and its the first cylinder on the left side of the motor
    i believe its the the 2nd

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  • Master
  • 7,353 Answers

On all cylinders ? Timing chain? Can you explain what you are trying to fix? V6, V8?????

Posted on Nov 16, 2009

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1 Answer

What is wrong when the manifold valve isnt closing?


manifold valve. Intake or exhaust. i guess intake.
where are you exactly ,
the 2009 , which engine?
the intake on some engines have many valves.
intake runner.
main throttle is an air valve.
VSV valves , for EVAP system, that too is an intake valve.

why not post symptoms
and if you see a valve acting funny, send a photo or tell
exactly it connection, locations.
or login to alldata.com and just look.

Jun 06, 2014 | 2009 Jeep Compass

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Quest code p1136


P1136 NISSAN - Intake Valve Timing Control Solenoid Valve Circuit Bank 2
Possible causes- Intake valve timing control solenoid valve bank 2 circuit is open or shorted.
- Intake valve timing control solenoid valve bank 2 circuit connectors
- Intake valve timing control solenoid valve bank 2 Tech notes Since the Intake valve timing control solenoid valve uses oil flow to control timing, dirty oil can cause the valve to stuck open or close. Before replacing the valve, change engine oil and filter and reset engine code.

Aug 29, 2012 | 2005 Nissan Quest

1 Answer

Nissan code p1136 p1124


P1136 NISSAN - Intake Valve Timing Control Solenoid Valve Circuit Bank 2

Possible causes- Intake valve timing control solenoid valve bank 2 circuit is open or shorted.
- Intake valve timing control solenoid valve bank 2 circuit connectors
- Intake valve timing control solenoid valve bank 2
P1124 NISSAN - Throttle Control Motor Relay Circuit Short

Possible causes- Throttle Control Motor relay harness is open or shorted
- Throttle Control Motor relay circuit poor electrical connection
- Fualty Throttle Control Motor relay

Aug 29, 2012 | 2005 Nissan Quest

1 Answer

Saab 9-3 trouble code p1343


Hi:

DTC P1343 - Misfire Cylinder 1 With Fuel Cut-off
I would start looking at the air intake for leaks first. Make sure the intake boot isn't torn anywhere, inspect it throroughly around all grooves for cracks. Also check the crankcase for excessive vacuum by removing the oil cap with it running, listen for idle speed change, and excessive vacuum entering with the cap off.

This would indicate the crankcase vent valve has failed under the intake.

It can be replaced without removing the intake, it's kind of a pain. You will need the valve and the attaching hoses since they will need to be broken to remove the valve, and they get brittle with age.


The valve is located under the intake, slightly forward of the throttle body. I wouldn't try do do it unless you're really mechanically inclined, its kind of tough.

Hope this helps.

Mar 07, 2012 | 2006 Saab 9-3 1.8i

1 Answer

2006 Saab 9-3 trouble code P1343


DTC P1343 - Misfire Cylinder 1 With Fuel Cut-off
I would start looking at the air intake for leaks first. Make sure the intake boot isn't torn anywhere, inspect it throroughly around all grooves for cracks. Also check the crankcase for excessive vacuum by removing the oil cap with it running, listen for idle speed change, and excessive vacuum entering with the cap off.

This would indicate the crankcase vent valve has failed under the intake.

It can be replaced without removing the intake, it's kind of a pain. You will need the valve and the attaching hoses since they will need to be broken to remove the valve, and they get brittle with age.


The valve is located under the intake, slightly forward of the throttle body. I wouldn't try do do it unless you're really mechanically inclined, its kind of tough.

Hope this helps.

Mar 02, 2012 | 2006 Saab 9-3 1.8i

1 Answer

I have a 1989 Honda civic just had a rebuild what i thought was a blown head gasket turned out to be holes burned into 2 valves.since the rebuild it soots up the spark plugs bad it flashes codes 1 then 10...


Code 1 Oxygen Content-
Code 10 Intake Air Temperature (IAT)
Code 14 Idle Air Control (IAC) valve
Sounds like the oxygen sensor (code 1) is recieving more fuel content (or unburned fuel) than it can measure...
The intake air temperature sensor isn't reading within range because...
The Idle air control valve (basically an electronic choke) isn't opening up to allow enough air into the engine to create a clean fuel burn, creating burned valves (probably intake valves) from unburned fuel.

Aug 30, 2011 | 1990 Honda Civic

1 Answer

I just replaced the egr valve in my 1997 dodge caravan 2 days ago. The service engine light came back on, and I got the same p0401 code. What should I look for now?


it may help to tell what engine you have. P0401 doesnt mean the egr valve was bad, it means the egr isnt opening for some reason OR not flowing. Egr valves rarely are "bad" check if all vacuum lines are connected and clear. the egr vacuum solenoid is famous for being bad. als make sure the passage from the egr valve to the intake manifold is clean and flowing. Its like flushing a toilet thats clogged.. All the valves are working, but its not flowing.

Aug 03, 2011 | Dodge Caravan Cars & Trucks

1 Answer

When i start my 1998 honda , the idle rmp goes up and down btw 2 and 1. then when i put it in park it shuts off. i changed the spark plugs and the car started better. but right now it cant hold its rmp...


98 Honda well a model type willl be great and even a 4cyl or 6cyl. But it doesnt matter we will trouble shoot who control this flucuation FIRST CHECK THE AIR FILTER it may be plugged .IF IT ISNT THEN DO THIS. All 1998 hondas wether its 4 or 6 is a speed density system. so this is easy its a vacuum leak that is affecting the map sensor. where is the map sensor on top of a throttle body you can find it location under the hood diagram.you just need to make sure a vacuum hose isnt leaking this means are there any diconnected? this is a visual inspection now you ll have to inspect for internal vacuum leak that will cause this okay you did the tune up youself? Then you can troubleshoot this youll need a hand that can feel hot and warm.if you engine is running rough find the EGR valve its on the right side of engie above intake manifold.now if the car engine is unstable feel the valve if the surface temperature of the intake is the same as the surface temperature the valve it is most like not the problem, If the temperature of this valve is hoter than the surface temperature of the intake manifold this valve is open , you can remove it and clean the inside. But here is the problem some EGR system differ on the model 1998 1999 some have linear EGR and some transducer. If the EGR is causing rough idle its pintle valve is open and youll have problem as described some yes you can clear out the debris in the pintle area and some well it too late you ll just have to replace it

Apr 30, 2011 | Honda Accord Cars & Trucks

2 Answers

Making sure i'm on the compression stroke


Hi,
The compression stroke is when the piston is traveling UP and the intake and exhaust valves are both closed.

Intake: Piston going down, intake valve open, exhaust valve closed
Compression: Piston going up, intake and exhaust valves closed
Power: Piston going down, intake and exhaust valves closed
Exhaust: Piston going up., intake valve closed, exhaust valve open

Mar 16, 2011 | Toyota Tacoma Cars & Trucks

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