Question about Cars & Trucks

Open Question

What are these plastic tubes on a 2001 Impala 3.8L?

I have a 2001 Impala 3.8L. I popped off the engine cover because I need to change the thermostat, and noticed that two tiny plastic lines are broken. They go in to something (not sure what, I'm still learning) that's basically directly above the thermostat housing. In the image at http://ww2.justanswer.com/uploads/djenn434/2010-12-27_234940_solenoids_0000.jpg they start together, on the far right towards the middle. The right-hand line from the number two passes over them just after they elbow; after that, they split and go to different things. Both of these are broken where they join that structure above the thermostat housing. The car seems to be running fine. I suspect they're lines for O2 sensors or something but that's a guess...the check engine light is on. I'd just like to know what they are and what to search for to find a replacement. Any help would be greatly appreciated.

Posted by on

  • Colin Kirk Jul 16, 2013

    This is a picture of the hoses in question. I'm pointing to where they are broken.

×

3 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

  • 59 Answers

SOURCE: 2002 impala 3.8L 180,000kms. Having

it is possibly the throttle position sensor(tps) malfunctioning. basically the computer or "brain" of the car thinks the throttle is in a different position than it really is and automatically makes adjustments to fuel, air ect.... based on these false readings from the sensor thus causing the engine to react a little different when you expect to have power.

Posted on May 14, 2011

ZJLimited
  • 17970 Answers

SOURCE: 2002 nissan maxima, check engine

About DTC P1800, I suggest check the harness and verify it is plugged in and still functioning. Also, try checking your vac tubes to verify that they are not reversed. Also read this TSB with details about correct diagnostic: DTC P1800 VIAS CONTROL SOLENOID VALVE

The VIAS control solenoid valve cuts the intake manifold vacuum signal for power valve control. It responds to ON/OFF signals from the ECM. When the solenoid is off, the vacuum signal from the intake manifold is cut. When the ECM sends an ON signal the coil pulls the plunger downward and feeds the vacuum signal to the power valve actuator.

DTC detecting condition:
• An excessively low or high voltage signal is sent to ECM through the valve
Possible cause:
• Harness or connectors (The solenoid valve circuit is open or shorted.)
• VIAS control solenoid valve

Will need replaced the solenoid valve (P/N - 149558J10A). The valve is located under the engine cover. It's a Nissan only part so you have to order from the dealer, either online or in person. It's cheaper online. Check this sample Nissan engine location (click image for zoom)...

zjlimited_1658.jpg



DTC P1147 - Bank1 Sensor 2 O2 sensor maximum voltage monitoring
Component Description: The heated oxygen sensor 2, after three way catalyst, monitors the oxygen level in the exhaust gas on each bank.

Even if switching characteristics of the heated oxygen sensor 1 are shifted, the air fuel ratio is controlled to stoichiometric, by the signal from the heated oxygen sensor 2.

This sensor is made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. Under normal conditions the heated oxygen sensor 2 is not used for engine control operation.

DTC detecting condition: The maximum voltage from the sensor is not reached to the specified voltage.

Possible cause:
Harness or connectors (The sensor circuit is open or shorted)
Heated oxygen sensor 2
Fuel pressure
Injectors

Majority of cases this is either a faulty O2 sensor, or short/open in wiring harness. Bank1 sensor2 is the rear O2 sensor on the passenger (right) hand side (click image for zoom):

zjlimited_50.png

Here is simple test with voltmeter to test O2 sensor. If it fails test, replace sensor. If not, then you will have to start tracing the wiring harness for a short/open in it (click for zoom):

zjlimited_51.png

And here additional details: DTC P1147 O2 Sensor

Keep us updated.

Posted on Aug 01, 2011

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

How many fuse boxes does a 2001 Chevy. Impala have


Has three , one under the hood in the engine compartment the other two are at either end of dash / instrument panel ! Open the front doors an at end of the I/P there is a removable plastic cover the fuse box is under it !

Jun 13, 2015 | 2001 Chevrolet Impala

1 Answer

I have a 2001 chevy impala 3.4L. and I need an image of what I thing is the vacuum line coming off of the air cleaning system going in behind the engine. it's the hard plastic hose. I'm not sure where it...


It is routed to a hole in the rear valve cover.if you remove the coils, module, and module bracket you will see the hole in the valve cover. I have done enough of these I can get them in and out with out removing anything but it will make it a lot easier to remove the above components if you are less experienced.

Feb 19, 2015 | 2001 Chevrolet Impala

1 Answer

What are these palstic tubes on a 2001 Impala 3.8L?


The first thing to do is get the computer scanned for trouble codes.
You should come up with codes for the EVAP system which is how the computer vents the gas tank to the vapor canister. O2 sensors are mounted in the exhaust pipes and don't use vac lines.

Jul 16, 2013 | 2001 Chevrolet Impala

1 Answer

My windshield wipers on my 2001 Chevy Impala stop in the upright position when i turn it off! WHAT DO I DO!! I NEED HELP!!


This is a very common problem on the Impalas. I had to fix my 2002 Impala. Both wipers will point straight up.
There is a tab that may be bent near the wiper motor shaft.
Open the hood.
You need to remove the driver's side wiper arm. You need to pop-off the round black cover and there's a nut underneath.
Then remove the plastic cover between the windshield and the engine compartment.
See the pictures below, Look for a bent TAB. it's really tough, but bend it back with pliers and/or big screwdriver. The "catch" needs to stop on the tab to park the wipers correctly.
If the tab is OK, look for a missing or broken spring. For that, you'll need to get the replacement part from the dealer. May be: park mechanism, part #12494832
zeevert_22.jpg
zeevert_23.jpg
zeevert_24.jpg
I did a full write-up at this website: www.naioa.com
http://www.naioa.com/v2/modules.php?name=Forums&file=viewtopic&t=26086
You may have to register for free, and look under the "knowledge Based" section in the Forum.

Dec 29, 2010 | 2001 Chevrolet Impala

1 Answer

How do i change thermostat in a 2001 chevy impala 3.8


go to an auto supply house buy a Chilton's or similar repair manual for the 2001 chevy impala but a thermostat and follow the instructions in the repair manual. it is a really simple repair and the manual will have step by step instructions for you. THX for rating/voting, etc.

Stormi

Nov 15, 2010 | 2001 Chevrolet Impala

1 Answer

How to change thermostat


if you have a v6 drain radiator.remove plastic cover, have to do this by loosing the oil cap and tube by turning it counter clock wise, remove the cap and tube, remove cover, replace the cap so nothing falls into the engine, follow upper radiator hose to engine where it goes into a housing, remove bolts on housing and lift off.

Oct 22, 2010 | 1999 Pontiac Grand Am GT

1 Answer

2001 Chevy Impala


If you have done this already,then bleed the cooling system,this is all you lack,just get the air out of the system,two bleed ports,one on the thermostat housing,and one on the engine near the water pump,just bleed them out as the car warms up,the thermostat bleeder last,if this was at all helpful,please rate,thank you.

Jul 04, 2010 | 2001 Chevrolet Impala

2 Answers

How do I change the thermostat on a 2001 Pontiac Grandam SE?


HI
To get to the thermostat you need to remove air cleaner box assembly from the throttle body and move it out of the way. Next, remove the nut at the throttle body that holds the steel tube that goes to the heater hose, remove all hoses that connect to this tube and raise it out of the way. Remove the steel line that goes to the radiator surge tank from the thermostat housing. Now the fun part. With a 13MM box end wrench, loosen the lower bolt from the thermostat housing. A 13 mm socket will remove the top bolt. Remove the thermostat cover and remove the thermostat. Reverse to install.

Please chek this link for replacing the thermostat...

http://www.pfyc.com/supportfiles/tstat/tstat.htm

Thanks for contacting fixya.com

Nov 11, 2009 | 2001 Pontiac Grand Am SE

1 Answer

Where are air filters located on 2001 mercedes c240


there air 2 air filters located inside the black, plastic engine cover assembly. remove the 2 accordion like inlet tubes on each side of the engine cover/airbox. yank straight up from the back of the box closest to the windshield with a little force to remove the entire air box/engine cover assembly. you will need a #20 torx bit driver. turn the air box upside down and loosen all the torx bits on both sides. the screws will not come completely out of their holders. remove each rectangular box and you will see the air filters inside. make sure when reinstalling the air box/engine cover, that the round air inlet hole sits properly onto the air mass meter and all 4 corners of the box pop back into their clips

Mar 16, 2009 | 2001 Mercedes-Benz C-Class

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

187 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts

yadayada
yadayada

Level 3 Expert

74945 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Randy Ohler

Level 3 Expert

14585 Answers

Are you a Car and Truck Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...