Vauxhall/Opel Insignia 1.8 running lean, P0171. Fault finding and repair.

Consider to support my channel and all the hard work put into it at / lmautorepairs
Thank you
Hi
This 2010 Insignia 1.8 petrol, came to me with the engine light on, otherwise running ok.
A scan showed P0171 referring to a lean condition...
Follow me on this video to find out what was the problem and how to resolve it.
Link to the Astra video mentioned:
• Vauxhall/Opel Astra J ...
Hope you enjoy the video.
Any questions or comments put them below.
Like always, thank you for watching!

[@nabardali5659]

Thank you very much for your video and it sorted out my problems , I had exactly the same problem and no local Gerages could find the problem until I saw your video and I done it my self and saved me a lot of money. I hope you continue

[@LMAutoRepairs]

That's great! Well done! 👍👍👍👍

[@jaykent6645]

Brilliant find Louis, a lot of us would have been looking for a split pipe, not the evap valve by-passing! Thanks for all your hard work. Kind regards Jay🤗

[@LMAutoRepairs]

😊 Thanks!

[@isalmankhan1]

@18:29 Yes we know you better😉 You will always prove your point technically, which is awesome👍 Great video, about understanding Fuel Trims & following them during the diag👍 Stay Safe Bro❤

[@LMAutoRepairs]

😋 Thanks! 👍👍👍

[@konradc12]

How spooky. A friend has a 2016 Vauxhall Mokka 1.4 turbo with same P0171. Only yesterday, I tested the same valve by blowing and it is fine. It is closed. I am leaning towards the valve cover, but will check for leaks. For now I have cleared the code, which stays off. I know it will return, because I cleared the code a few months ago. I am no a mechanic but have some diagnostic tools. Great video as always. 👍🏾

[@LMAutoRepairs]

😊 Thanks! 👍👍👍

[@zxyqwerty123]

Can you imagine how many parts a main dealer would have machine gunned at this car before giving up. Great work as usual, a little time spent thinking and a lot of experience adds up to a good value and correct fix yet again 👍

[@LMAutoRepairs]

Thanks! 😊 👍👍👍

[@khalidarshad3448]

Hi there what’s the part name please

[@amperugarage]

The famous P0170 or p0171 , very hard to properly diagnose for many "technicians" . Good work as always. 👍

[@LMAutoRepairs]

😊 Thanks! 👍👍👍

[@kendisgomez1254]

Hi where are you? I got vauxhall insignia 1.6 cdti 2016, with some faut. ​@@LMAutoRepairs

[@CarsExposed]

Great find mate 🙌, great job as always

[@LMAutoRepairs]

Thanks Igor! 👍👍👍

[@rogerjones8069]

I did exactly this job a few months back after all manner of other issues with my 2011 tourer insignia. Overheating issues (broken water pump impeller, radiator clogged with stop leak, leak on the expansion bottle, MAF sensor fault and EVAP valve fault). Took some real working out and lots of testing before finally (touch wood) being able to run the car without MIL lights, overheating or blowing the radiator. Originally thought was so bad that the head had gone - Compression test and Radiator leak detector test showed it was good thankfully! Only owned the car 4 months so far 3 of which fixing between working

[@LMAutoRepairs]

😊 Hope it lasts now...🤞 Thank you for watching and for your comment!

[@rogerjones8069]

@@LMAutoRepairs me too and thanks for the content! Your explanation on the Astra fuel trims helped me greatly in working out whether my o2 sensors were at fault or another item

[@LMAutoRepairs]

👍👍👍

[@hamadyousef8728]

Opel cars were good in the past .. these days they are just a mess .. even been the worst after PSA company managed them. The video was very helpful sir .. even a good mechanic will not guess it is the purge valve which made a big issue there 😂😂

[@LMAutoRepairs]

😊 Thanks... for watching and for your comment! 👍👍👍

[@niccots]

I disagree and PSA at least make them lighter and decrease spare part costs which was every expensive because of GM licencing - like in this case. Another bad thing in GM days was chain timing. Is not very robust in any new car, because of emissions/consumption and it will last the same as rubber belt, but compare belt and chain replacement. Chain replacement is 3 times more expensive and takes a lot of effort.

[@hamadyousef8728]

@@niccots Your saying is true but what I am seeing is Opel went from worst to bad reliability now with PSA ... For my opinion if Iam going to buy a new car for sure it will not be Opel or Peugeot / Citroen. Their market is going down these days rapidily unfortunately. By the way I have Peugeot 406 1998 and I am happy with HER 😊

[@irishniall83]

Another great video, the engine code is Z18XER 1.8 VVT 16v. The Vectra C has the same engine. That’s in my 06 Vectra. Have it 12 years and it’s great reliable engine and easy to work on.

[@LMAutoRepairs]

Thank you for watching and for your comment! 👍👍

[@rogerjones8069]

This is actually a very SLIGHTLY revised engine to meet more recent emission standards and is the A18XER and not the Z18XER. Decent engine all be it slow in the insignias. Shame they are married with the chocolate M32 box and a dreaded DMF. (Yes a DMF in a 1.8 petrol!)

[@irishniall83]

@@rogerjones8069 that mad a DMF on them, likely slowing it down. Cheers on the correction. I did drive an insignia 1.8 and found it slow compared to the Vectra. Good engine though. The F17 gearbox is in the Vectra and chocolate too, on my 3rd during 12 years ownership, they eat the bearings.

[@rogerjones8069]

@@irishniall83 I know right! I was told when buying it didn’t have a DMF only to go and research it and find they do indeed. Never have I ever known a 1.8 or below have a DMF on a petrol! Think of all that weight it carries but in all fairness it gives generally that silky smooth running (ignoring vvt knocks etc). Had my fair share of issues since I purcchased around 6 months ago. Don’t think I’d ever buy another but let’s see how far this one takes me (at circa 2000 miles a year, I’ll be hard pressed to even hit 100,000 within the next 10 years 🤣)

[@garydrablow853]

Extremely interesting video, great job for sharing 👍

[@LMAutoRepairs]

Thanks! 👍👍👍

[@lanehogger1532]

I ran one of these engines in a 2008 vectra C. I did 170000 miles in 6 years with no problems. According to a mechanic friend I was lucky that it lasted so well. However that vectra was my most reliable car yet.

[@LMAutoRepairs]

👍👍👍

[@-DC-]

Same did 120k in a Vectra C in 3 year's behind this engine didn't miss a beat .

[@ikocheratcr]

When you showed the new valve part number, I needed to google that. Ebay price $15... that give me a nice laugh. Out of reality prices that sometimes we find out there.

[@LMAutoRepairs]

I know... lol The price some dealers ask for some parts, are just out of this world... 🤦‍♂️ 👍👍👍

[@TTRVision]

as we know , dirty MAF of worn MAF (slow values live data due to internal superficial damage, or more often afermarket cheap parts) will alter the fuel trims. good job and have a nice weekend!

[@LMAutoRepairs]

As well... 👍 Thank you for watching and for your comment!

[@rukass1]

Olá Luís, bom vídeo como sempre!! Para mim foi estranho, não esperava essa resolução, uma evap a colocar o sistema pobre, de onde vem o raio do oxigénio!?🤪

[@-DC-]

Had one of the first Insignia's into the UK back on 08 was one of the most fault ridden infuriating car's I've ever had !

[@SalimKhan-gk1fh]

Yes I experienced the same! Yet the vectra c before it was brilliant car, mine was a 120bhp CDTI, absolutely bulletproof

[@markobezjak6952]

Thank you for the video Luis 👍

[@LMAutoRepairs]

😊 👍👍👍

[@AutoDiag_]

Perfect diagnosis. Learning.

[@LMAutoRepairs]

Thanks! 👍👍👍

[@nemanjadzombic6101]

Thank you for another great video!!!

[@LMAutoRepairs]

Thanks! 👍👍

[@andresilva5667]

Hey! Great video once again.

[@LMAutoRepairs]

Thanks! 👍👍👍

[@electronic7979]

Nice repair video 👍

[@LMAutoRepairs]

Thanks! 👍👍👍

[@Largie67]

I found this video really informative and have found the same issue on a friends car, can you help with the name of the replacement part please?

[@Itsrichayo]

Thanks for sharing this info. I have similar issues with a 2009 Insignia. I have had a few diagnosis and not happy with it the outcomes. Do you have a garage in London?

[@lukas181118]

Wise grips clamp pipe from evap and watch fuel trim . Common problem with Vauxhall’s . Good vid bud

[@LMAutoRepairs]

👍👍👍 Thanks!

[@captainspaulding000]

I had same fault code and changed; Sparkplugs, both Lamda sensors (o2), cleaned MAF. Reason for the fault was small hole on exhaustpipe what has mesh cover on it, between cat con. and second lamda.

[@LMAutoRepairs]

😊 👍👍👍

[@trevormansfield6740]

Good diagnosis. Thanks

[@LMAutoRepairs]

👍👍👍

[@liviu2004]

Do you think oil was contaminated with petrol while having positive fuel trims? Would that cause negative fuel trims once problem was sorted? By fuel vapours coming from oil back through pvc valve cover?

[@richard180961]

Fuel trim system Test state. Appears to be alternating between "Running & Complete"

[@bighhhc3037]

Hello please, I have an opel astra h 1.7 edc16c9 engine speedometer not exceeding 30 rpm the turbo work sensor maf work i i change 2 ecu for this problem Those cars tired me

[@joachimjohan1215]

brilliant video, but you dont need to go through with all the xtra filming and editing. great content in between all the talking and tinkering tho! great job! spot on. Cheerz!

[@LMAutoRepairs]

😊 Thanks! 👍👍👍

[@zolisiser9312]

I had the same P0171 and when I looked closer to the PCV valve I have noticed the rubber fitting pipe L shape was split, so I used rubber glue and now the car is ideling correctly

[@LMAutoRepairs]

😊 👍👍👍

[@mattbrush2970]

That style Bosch purge valve is used on many newer GM cars and seems to be a common failure. Should have had evap leak/purge flow codes set, likely someone had been there before you and cleared the codes, and the evap tests had not ran yet.

[@LMAutoRepairs]

Possibly... 🤷‍♂️ Thank you for watching and for your comment!

[@ThePavelGhost]

That's a very good catch based on a clever logic of how things work. Where do you order parts from usually? And do you use original part numbers or just look for alternatives? In my experience it's quite tricky sometimes and take much longer than 3 days. Good luck with the diagnostics.

[@LMAutoRepairs]

Sensors etc... I always try to go original... Things like this, I try to get genuine manufacturers... might not have the Vauxhall logo or part number... but still a Bosch part... There is a few local car parts shops that I usually get in touch first... if they don't have it, then online... like ebay etc... Thank you for watching and for your comment! 👍👍👍

[@p.p2295]

My car has po171 & po458 codes. On vauxhall astra gtc Took to garage he said its the purge valve. So he's ordered from main dealer. To do jog fitting this part & Labour £231. Sound a lot of money ? P. P. But there was No signs on car as it were running great. It was engine light on. Rac came he said po171 lean. & po458. Codes. P. P.

[@abdallahtanjawi9421]

thank you for sharing

[@LMAutoRepairs]

👍👍👍

[@cabbie737]

Good job mate

[@LMAutoRepairs]

Thanks!

[@hassanamed4908]

Thank you so much

[@LMAutoRepairs]

👍👍👍

[@bornforparadise7517]

Excellent diagnostic mate , this trim diagnostic is very important , what i noticed that the ecu did not triggered a dtc for an evap large leak , I've never worked on those car but i know that the Toyota's car have the evap large leak dtc stored when this valve stuck open or wear completely and it does not block the gazoline vapor .. did you ever pass by the same situation ?

[@LMAutoRepairs]

No... have not done many toyotas.... Thank you for watching and for your comment!

[@bornforparadise7517]

@@LMAutoRepairs not a problem mate

[@liviu2004]

Isn’t it that fuel trim learn runs always and not only that you hit that button?

[@nooneenter1]

Hi Regarding fuel trims. I need your help and knowledge hopefully in a mercedes car. 2013 c200 cgi. M271 Evo engine. Car keep getting rich condition. Mixture adaptation goes to 30%. High pressure fuel pump, fuel pressure sensor, injections, ecu all replaced and the car still gets rich. What your thoughts abut that. Any idea will be helpful. Regards

[@LMAutoRepairs]

The fuel trims are calculated by the reading of the oxygen content in the exhaust... that is read by the O2 sensors... Have made sure that the O2 sensors are reading correctly? Just a thought, as don't mention the Os sensors... Thank you for watching and for your comment!

[@lewisabbott39]

Purge valves are quite common with that code, lost count how many I've change including the camcovers

[@LMAutoRepairs]

👍👍👍 Thank you for watching and for your comment!

[@kevcobban9143]

Hi I'm after a bit of information I'm thinking of buying a vauxhall tigra 1.8 petrol know the car has been sitting in the open for the last year the battery was taken off the car will that effect the ecu coding if I put a battery on the car will the code still be in the ecu many thanks...............kevin by the way great videos

[@LMAutoRepairs]

No... you will have to set the clock though...😋 👍👍👍 Thank you for watching!

[@fir3w4lk3r]

Nice!!!

[@LMAutoRepairs]

😊 Thanks! 👍👍👍

[@beluxauto5968]

The closed loop , open loop and the short FT , Long FT is something that a lot of people struggle with understanding . Also as you said , don´t think it´s always the purge valve . In this case it was obvious when you blew through it that the biggest issue was the valve . I have had multiple occasions that the valve but also pipes, fuel cap , blocked cat contributed to the FT being off . Good video as always . P.S , are you ever considering to built a small garage with a small scissor lift ?

[@LMAutoRepairs]

Yes, FT can be a bit confusing until you get your head around them...😋 As for the small garage, yes, I thought about it many times... but it is a scaring move... As I would most likely would have to quite my job... and if does not work out, I would be left in an awkward position...🙃 Thanks Belux... for watching and for your comment!

[@beluxauto5968]

@@LMAutoRepairs Well I am not in a position to decide this for you but if I would do it all over again I would have searched for a job only doing morning shifts 06.00 till 14.00 and would have had a partly business registration and a one car garage. I could have chosen when to work and what to work on. I could have made a certain amount of money free of taxes and still have steady wages from my employer. Too much has changed in the last 25 years which has made being full time self-employed not very attractive. This is my personal view so don't feel offended by my question/suggestion.

[@LMAutoRepairs]

Not at all... 👍👍👍

[@shefi14]

Great video! I habe a question. How can an evap valve make car run lean. As i know the system how it work it can run Rich not lean. If i am wrong can you explain ?

[@LMAutoRepairs]

If the leak is small, it will pull the vapours from the tank which will make it to run rich... With a leak like that, will pull that much, that ended up being more air than vapours... That's how I see it... but I might be wrong...😊 Thank you for watching and for your comment!

[@mobreyngambi1052]

That was nice

[@LMAutoRepairs]

Thank you for watching! 👍👍👍

[@gutefrage9425]

Hey my autel get strage values in my insignia for the magnet valves in the ABS system. Can you just upload a video with your sensor data of the magnet valves front and rear?

[@LMAutoRepairs]

I don't own an insignia... Sorry...

[@theunnamed2440]

@@LMAutoRepairs No Problem. Thanks for the reply!

[@hashirnawaz4532]

Nice

[@LMAutoRepairs]

Thanks! 👍👍👍

[@simeunovicm]

Why it didn't trigger fault for evap leak?

[@LMAutoRepairs]

🤷‍♂️ Like someone said, maybe the car had the codes deleted before came to me... Who knows... Thank you for watching!

[@CANDiagnostic]

i love the way you put your lips around that valve

[@ronaldo111181]

Excelente diagnóstico

[@LMAutoRepairs]

🤦‍♂️😊

[@LMAutoRepairs]

Obrigado! 👍👍👍

[@Aadam18]

Hi, thanks for this video. I have the same issue as shown and removed and tested the valve and it is faulty. Problem i am having is finding uk based replacements. Any chance you could please provide the link to where you purchased yours. Would be much appreciated. Thanks in advance.

[@LMAutoRepairs]

I got this one from ebay... if I recall correctly... Just search in there and see what comes up... 👍👍👍

[@Aadam18]

@@LMAutoRepairs Thanks for the reply. I have tried but can't find it. The 2 part numbers on the valve were gm 55574240 and 0280142430. Most of them look nothing like the 1 i took off and as mentioned are not from the uk.

[@LMAutoRepairs]

Part numbers can be superceded... try look for it using key words rather than the part number...

[@Aadam18]

@@LMAutoRepairs Thanks will give it a go. Not holding much hope though lol may well have to order from china and wait a couple of extra weeks 😂

[@A.I_Facts]

Did you ever find a uk replacement ?

[@ian_s7481]

How much was the Bosch valve compared to the dealer?

[@LMAutoRepairs]

I was under the impression I said it or showed it in the video... but I might be wrong... I don't really remember now exactly how much it was... but was less than £50... 👍👍👍

[@florinsiladi9118]

Luis can you please read you brain eeprom and send it to every subscriber ?? Thanks for you videos and your effort !! 😊

[@LMAutoRepairs]

🤣🤣🤣 I have tried... All the data is corrupted....😋 Thanks, for watching and for your comment! 👍👍👍

[@florinsiladi9118]

LM Auto Repairs 👍👍🙋‍♂️

[@ukcitizen1158]

Boom, there it is..... 😁

[@LMAutoRepairs]

😊 👍👍👍

[@easyrider020]

what is the fuel consumption ?im doubting to buy 1.8 or the 1.6 engine none turbo

[@LMAutoRepairs]

I never owned one... can't really advise... 👍👍👍

[@sbrader97]

I know this is a late reply but check out honest john real mpg in the future it has real world average mpg submitted by users

[@darrenlowe5102]

What is the part number to order from bosch

[@LMAutoRepairs]

Showed on the video... Can't remember now... Thank you for watching!

[@salahbona6234]

Purge stake open at idal Lean وRich

[@ICantModderXD]

I've got an audi a3 2006 and somehow I've managed to turn off the power steering, I've tried the center lock to lock and drive but still no luck. Any help is appreciated. Thanks in advanced.

[@LMAutoRepairs]

What do you mean, your turned it off? Scan the car and go from there... Thank you for watching!

[@ICantModderXD]

@@LMAutoRepairs I've just got the machine and because I have a steering angle sensor fault I've tried clearing it and tried recalibrating it but no luck so I reckon I need a new steering angle sensor but in the process I must've misclicked and now there is no power steering.

[@LMAutoRepairs]

Well... Audi kinda does that... until the steering angle is calibrated...

[@ICantModderXD]

@@LMAutoRepairs The car has had the fault since I bought it last year, it's only recently turned off.

[@LMAutoRepairs]

That's strange... either way, sort the steering angle first... and go from there...

[@user-vt2gw7nb7x]

The ecu checks the evap system. Why there is no code about it.

[@LMAutoRepairs]

🤷‍♂️ Thank you for watching!

[@Tahsin_Hussain]

Can I bring my Vauxhall insignia to you. it has few issues. Your garage address please.

[@aparvez88]

Hi, I have a major problem with my VXR GTC since 2018. Been too 4 different garages including vauxhall peter vardy. NO LUCK, so I will try to repair myself No rev count, EGM + ESP light on P0315 - Crankshaft position not learned P0335 - Crankshaft sensor Circuit U0100 - Lost communication with ECM Sensor, Ecu, engine wiring harness, timing chain, sprockets have all been replaced. Issue stays the same. Thinking it is a wiring issue. Any advice on where to start as garages dont want to mess with wiring...

[@LMAutoRepairs]

Start on the engine ecu wiring... there is not much more to advise... Check wiring from the sensor to the ecu... Power, grounds etc... The sensor, was that a genuine or an aftermarket?

[@aparvez88]

@@LMAutoRepairs I found your video as I was checking reviews on Autel electrical Probe, i have Autel Maxidas ds708 pro so hopefully with the right tools I can do fault finding Genuine parts direct from Vauxhall, crankshaft sensor replaced total of 4 times as each garage suggested there could be a fault on the sensor

[@LMAutoRepairs]

I would scope the timing first... If the timing is out, or something else is not right, you might get those codes... That would be my next step... Well, that would have been one of the steps before replacing all of those parts... which obviously where not faulty... As you still have the same problem... Só, yes, scope the timing and compare it with a good known sample... 👍👍👍

[@aparvez88]

@@LMAutoRepairs I will give the timing a check over. Thank you Just to add the codes prior to any garage being involved remain the same. Even vauxhall dealership replaced timing chain twice as they assumed there was an issue the first time they replaced it... Big headache since 2018 with car being off road

[@andresilva5667]

I changed my rocker cover and purge valve on my car and it still rough idles stopped and in traffic. The fuel is consumption is so poor that a full tank doesn't last long... Does anyone have any clue what it could be? It is a zafira 1.6 petrol XE1 engine.

[@LMAutoRepairs]

Aftermarket cover? I had issues with them... Thank you for watching!

[@andresilva5667]

@@LMAutoRepairs it was a FAI cover not the cheap ones.

[@LMAutoRepairs]

Double check that is good... I had them bad even being new...

[@andresilva5667]

@@LMAutoRepairs how do I check these without removing? Removing the vacuum hose at the back of the cover? The breather hole does nothing.

[@andresilva5667]

Freeze frame report generated by Torque for Android ========================================================= Vehicle VIN: W0L0AHM758G118108 Vehicle Manufacturer: Unknown Vehicle Calibration ID: A0300009 Freeze frame information: ------------------ Fuel Status = 0 byte Engine Load = 7.059 % Engine Coolant Temperature = 89 °C Fuel Trim Bank 1 Short Term = 1.562 % Fuel Trim Bank 1 Long Term = 19.531 % Intake Manifold Pressure = 7.832 psi Engine RPM = 1,685.25 rpm Speed (OBD) = 26.098 mph Timing Advance = 40 ° Intake Air Temperature = 23 °C Mass Air Flow Rate = 6.68 g/s Throttle Position(Manifold) = 12.157 % Fuel trim bank 1 sensor 1 = 1.562 % Voltage (Control Module) = 13.824 V End of report.

[@aymenmohamed1134]

👍🏻👍🏻👍🏻🌷

[@LMAutoRepairs]

☺️ 👍👍

[@timmehlittleloud2251]

Vauxhall fuel trims etc. are always odd during open loop. I've seen things like a low flow fault code for example when the ECU itself has closed a valve for another reason. I know there's a delay between filming and posting your vids but have you noticed how the stealers have been inflating their spares prices over the last 6 months. It's getting ridiculous.

[@LMAutoRepairs]

😊 Indeed they have... this was recorded about 11 months ago... but even then I started to see some ridiculous prices at the dealers... Thank you for watching and for your comment! 👍👍👍

[@neilmurphy845]

Well that's why they got the nickname stealership because they're always over charging for stuff.

[@rysacroft]

I can't believe the price that the dealer wanted for the solenoid. Are they made of gold?

[@LMAutoRepairs]

I know... I couldn't believe either... 😬 👍👍👍

[@geoepi321975]

That's the trick they built it and they ask whatever they want

[@brentsumner6548]

In South Africa - Opel parts are also seem to be made of "gold" , when you purchase them from the dealer - Crazy prices!!

[@geoepi321975]

@@brentsumner6548 and why the fuck they buy the Nazi cars

[@cornelisemail6070]

By astra h 1.6 2006 the valve is opening and closing very vast click noise Sound like an injector. Nobody on youtube really shows how it operates on the car.

[@neilmurphy845]

As Eric O would say there's your problem lady.

[@LMAutoRepairs]

😊 👍👍👍

[@ABEMUSPAPA]

Why nobody shows how to remove it

[@LMAutoRepairs]

Ho to remove what? Thank you for watching!

[@ABEMUSPAPA]

That part i mean Evp pruge Valve , i've got same problem code P0171 CORSA 1.2 2010 cant find this part anywhere also i check to clean up but is so hard to remove this rubber

[@stevenmales]

nice job,£468 pounds for that Vauxhall (fiat) must be on drugs what a rip off

[@neilmurphy845]

167 for that small thing thank god for eBay.

[@LMAutoRepairs]

Totally agree...😋 👍👍👍

[@telmobrandao5062]

Português?

[@LMAutoRepairs]

😊 Yes... 👍👍👍

[@telmobrandao5062]

Os seus videos são espectaculares, ja me ajudaram várias vezes. Obrigado. Grande abraço Português

[@LMAutoRepairs]

Na boa... O prazer é todo meu! Obrigado por seguires o canal! 👍👍👍

[@leejohnson2k]

Worst engine on market 1.8 petrol engines