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2003 mazda mpv. I REPLACED THE UPPER PVC HOSE.

2003 mazda mpv. The heater hose had A leak by core replaced the leakin hose. I notice the pvc hose also bad and replaced the upper pvc hose. While doing thisi broke the tube that connect the maf sensor. Replaced the connector tube and disconnected the sensor plug but didn't disconnected battery cable. When started van check enginetcs on &off light are lighted at the same time and would not go off. Help please

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Posted on Jan 02, 2017

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SOURCE: 2001 Mazda MPV upper front oxygen sensor change

I replaced this sensor about 6 months ago. (If this is the sensor that is located near the firewall on the exhaust manifold under the ignition coil.) The only way to easily replace it, is to remove the MAF and air filter assy. then remove the intake plenum, remove the ignition coil, and then you'll have access to the sensor. You'll need a sensor removal socket. If the socket slips around the hex of the sensor, then you'll need to use a regular deepwell socket and cut the cable from the top of the sensor, or use a combination wrench that will fit it.
The most difficult part of removing the intake plenum is getting the nut loose from the EGR valve. DO NOT just remove the two bolts holding it to the intake plenum. It will not line up correctly during re-assembly and may not seal tightly either.
This took about a Saturday to do. You'll need new plenum gaskets to replace the old. While your at it remove the throttle body and clean the carbon from the ports that lead to the EGR valve and replace that gasket as well. The gaskets will run about $30.

Posted on May 04, 2009

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SOURCE: 03' Mazda MPV LXI came

it could be an air leak from a vacume pipe or the inlet mannifold gasket

Posted on Dec 02, 2010

SOURCE: I have a 97 mazda mpv and need to find the pvc

PVC Valves do not need to be replaced
Never have

99% of them, have been on the valve cover
for at least 40 years

Unless you have a pcv vacuum hose leak
they do nothing, as far a your engine goes

They are there to regulate crankcase fume
evacuation

Need to start studying & stop listening
to all the hype,including repair shops that
sell these things for no reason.

Posted on Jun 26, 2011

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2 Answers

How bypass a rear heater core on 2003 mazda mpv


bsm240's related answer is short & to-the-point

find somewhere along those 2 heater core hoses where you can put a "heater hose union" and 2 clamps

i prefer a metal/brass one over a plastic one, just for longevity

http://www.downwindmarine.com/images/P/890829.jpg

or depending on your situation, you can just buy a hose and 2 clamps to connect the metal lines to each other

ps: there was a recall about this

MPVClub com View topic Dealer words Recall for Rear Heater Pipe coming

read the 14 page thread about all the owners having the same problems with this rear heater core problem

Apr 08, 2015 | Mazda Cars & Trucks

1 Answer

WHAT IS A PVC HOSE IN MAZDA MPV


The PCV is a valve and a hose, that sucks engine ring bypass gasses and reburns them. if it plugs up the engine leaks oil.

if the hose cracks it sucks air and the AFR goes lean and bucks.

jerks.

only on engines (unstated) that use a MAF sensor.

engine that use a MAP sensor ,race too fast with full power and no jerk with air leaks.

next time post engine type. as we can not guess this.



the list.....



2.0 L FS-DE I4 (99-02)

2.3 L L3-VE I4 (02-05)

2.5 L GY-DE V6 (99-01)

2.5 L AJ V6 (99-02)

3.0 L AJ V6 (02-06)

2.0 L RF MZR common rail turbodiesel









WHAT ENGINE PLEASE.

if unsure, (why fix any engine,if unsure>)but in the USA

the hood EPA sticker states this clearly.

no engine , no country, no joy,

Jul 18, 2014 | 2000 Mazda MPV

1 Answer

Very little heat,


are the heater core hoses getting hot

Jan 27, 2013 | 1998 Mazda MPV

1 Answer

I have a 97 mazda mpv and need to find the pvc valve on the engine?


PVC Valves do not need to be replaced
Never have

99% of them, have been on the valve cover
for at least 40 years

Unless you have a pcv vacuum hose leak
they do nothing, as far a your engine goes

They are there to regulate crankcase fume
evacuation

Need to start studying & stop listening
to all the hype,including repair shops that
sell these things for no reason.

Jun 26, 2011 | 1997 Mazda MPV

1 Answer

Were is the pcv valve


Don't know about a pvc valve but I know that I had a pvc hose just replaced on mine a couple of months ago. My check engine light was on

Aug 23, 2010 | 2005 Mazda MPV

1 Answer

2003 mazda mpv. I REPLACED THE UPPER PVC HOSE.


Tcs is not related to the engine. Please get a scan and post the trouble codes here.

Jul 19, 2017 | 2003 Mazda MPV

1 Answer

Mazda mpv vacuum hose replacement


I just had the same issue and troubleshot it with my cousin's fiance (who is a mechanic). You can reach the hose, providing the engine is cool. The key is getting some vice grips on the clamp which holds the hose to the engine. Once you get it off, the other end disconnects from a PVC elbow that goes into the crankcase. You should be able to get the hose off and then it has a label on it with the part number. I did not write down my part number.

Jul 09, 2008 | 2003 Mazda MPV

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