UK Car

UK car repair questions? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

My car has an intermittent idol issue where sometimes its…

Customer Question
Hi there my car...

Hi there my car has an intermittent idol issue where sometimes its idling between 1600 to 1800 rpm

Mechanic's Assistant: How many miles are on the car? What size is the engine?

60k on the clock its a 2litre petrol i was thinking it may be the sparks or coil packs that need changing as there was a water leak from the screen wash connector which caused a misfire i changed the coil pack but not the spark plugs

Mechanic's Assistant: What is the model/year of your Renault?

Renault megane mk3 tce(###) ###-####reg

Mechanic's Assistant: What year is your Renault?

2010

Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried so far?

Changed a coil pack on cylinder two as it had water in it

Submitted: 3 months ago.Category: UK Car
Show More
Show Less
Ask Your Own UK Car Question
Answered in 4 minutes by:
3/20/2018
UK Auto Mechanic: Peter Zavarelli,
 replied 3 months ago
Peter Zavarelli
Category: UK Car
Satisfied Customers: 32,878
Experience: Technical Consultant at Just Answer
Verified

Hi, my name is ***** ***** I will be happy to assist with this today.In some cases, I may need more info to assist better.I apologize for any delay.
I am here Sundays through Thursdays from around 5 am to 2 pm Mountain time.If you respond and I do not respond back right away I will do so as soon as I can.My info is somewhat limited on your model here but no one else has responded and would like to see if I can help here since your question has been sitting for so long.If at any time you feel that I cannot help with this please let me know.

I would check all coil packs for any water or corrosion.Make sure the spark plugs are all o.k. and if any spark plugs are worn or damaged they will need replaced.

But if the idle is running up to 1600 to 1800 on its own intermittently this can be a fault with a vacuum leak on the engine allowing air to enter the engine causing the idle to jump up like this or a fault with the throttle control motor or idle motor.You will need to have these checked to help locate which is the cause here.In some cases smoke has to be injected into the intake to locate any hard to see leaks like the intake gaskets leaking needing replaced.If no vacuum leaks are found then the throttle control motor/idle motor need to be tested to see if a fault is found with the throttle actuator or idle motor needing replaced.

If more help is needed, use the reply tab to continue our conversation. If no further assistance is needed, kindly rate my service, your 5-star rating is appreciated ( should be a link to click on here or above).You can rate at any time and we can continue to work on your question as this will not close out your question.I work on delivering the best answer and help here but in some cases, it can be difficult to do without seeing the vehicle.

Thanks Pete

Ask Your Own UK Car Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with an uk auto mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Peter Zavarelli Your Own Question
Peter Zavarelli
Peter Zavarelli
Peter Zavarelli
Category: UK Car
Satisfied Customers: 32,878
32,878 Satisfied Customers
Experience: Technical Consultant at Just Answer

Peter Zavarelli is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Marty

Marty

European Car Expert

432 satisfied customers

ASE & Bosch Certified Master Tech. Over 30 years experience.

Greg

Greg

Shop Owner

1,360 satisfied customers

17 years Shop Owner /Technician. 27 years experience,

Richard

Richard

UK Car Mechanic

626 satisfied customers

12 years as a technician at a Ford and Jaguar dealer Ford and Jaguar factory certified

Matt

Matt

Mechanical Engineer

4,702 satisfied customers

BEng hons Mech engineering, in auto industry 22 years

Trevor

Trevor

UK Car Mechanic

853 satisfied customers

NVQ 3, Modern Apprenticeship, MOT Tester, 15+ years experience diagnostic technician

Rob

Rob

UK Car Mechanic

823 satisfied customers

city and guilds level 1 2and 3. mot tester , 28 years experience set up training college in afghanistan

martin jones

martin jones

UK Car Mechanic

646 satisfied customers

25 years as a mechanic and mot tester, owned own business for 10 years city and guilds trained

< Previous | Next >

Related UK Car Questions
My Megane CC 2.0 16V has no warning lights, runs well idling
HI Mike, my Megane CC 2.0 16V has no warning lights, runs well idling but even in first gear won't rev past 5500 rpm! It's really lazy and sounds rough at full throttle as if performing well but doing… read more
Matt
Matt
Mechanical Engineer
Bachelor's Degree
4,702 satisfied customers
Yhe. The Renault megane 2 we have change cylinder head
the Renault megane 2 we have change cylinder head gasket grind all valve shave cylinder head change timing belt got the started it run for one week and it cut off and will not start i dont know what to do, johnny … read more
Matt
Matt
Mechanical Engineer
Bachelor's Degree
4,702 satisfied customers
I just installed a new battery and now my car is idling
I just installed a new battery and now my car is idling rough and strong exhaust smell … read more
Matt
Matt
Mechanical Engineer
Bachelor's Degree
4,702 satisfied customers
Have rensult megane dynamique 55 plate. Check injection and
Have rensult megane dynamique 55 plate. Check injection and service light comes on when start in morning, this started a few months ago but was randomly now and again. If i leave to run for 10 minutes… read more
Kevin
Kevin
workshop foreman /master tech/mot tester
1 satisfied customers
I have a Citroen C3 2003 reporting a P0300 fault code,
Hi I have a Citroen C3 2003 reporting a P0300 fault code, flashing engine warning light, clearly misfiring but why... I'm thinking faulty Coil Pack???… read more
Matt
Matt
Mechanical Engineer
Bachelor's Degree
4,702 satisfied customers
corolla: Hi...I have a 2005 4cylinder 1.4 petrol corolla.
Hi...I have a 2005 4cylinder 1.4 petrol corolla. the o2 light has come on and the engine was misfiring. I have had all the coil packs and the o2 sensor replaced.....alll was fine for about 4 weeks the… read more
Jake
Jake
Workshop manager
Level 3 NVQ in automotive skills
334 satisfied customers
3 gl: its a 2l petrol model manual..start and then stall straight away
hi there , i have a mk 3 gl estate. its a 2l petrol model manual and lately the lcd display in the center of the dash display is coming up with "in 02" this has not long changed from "in 01" when i go… read more
Dan
Dan
technical manager
Vocational, Technical or Trade Scho
143 satisfied customers
hi..i have got japanese mazda rx8 its got huge loss of power
hi..i have got japanese mazda rx8 2 weeks ago i noticed huge loss of power, revs very slowly and wont rev above 5000,at 5000revs the engine starts shaking, and radiator light comes on..but if i drop r… read more
GeoffMiles
GeoffMiles
Technician
Vocational, Technical or Trade Scho
4 satisfied customers
Renault: 16v..mins..petrol, it will now start but cnt drive it..cuts
i have an 03 renault megane 1.6 16v expression , on my way to work this moring it conked out on a roundabout wiv no warnin afta the police pushed me out the way the car would not start wen i pressed t… read more
FiestaEAC
FiestaEAC
Diagnostic Mechanic
Vocational, Technical or Trade Scho
61 satisfied customers
2000 Renault: v-reg 1999..accelerating..intermittently..revs drop
Hi, I have a v-reg 1999-2000 Renault Megane Scenic which is running very poorly. It occurs when accelerating and especially coming off roundabouts or going uphill. It started juddering and losing powe… read more
Mike
Mike
Proprieter / Diagnostic Technician
High School or GED
Pinto: i had new engine fitted in my r reg..drove..cylinder
i had new engine fitted in my r reg punto,drove 800 miles now its misfiring,new leads and plugs didnt help.is it the cylinder and have i been ripped off again.… read more
andy
andy
city and guilds
252 satisfied customers
2002 Renault: driven..home with a warning light that looks
I have a 2002 Renault Scenic, and have just driven home with a warning light that looks like some kind of pump flashing. Any idea what this could be?… read more
wefwef
wefwef
Vocational, Technical or Trade Scho
305 satisfied customers
Renault: rpm..the exhaust off, also the injectors..coil packs
renault megane 1.4 02 model, misfireing at 3/4 thousand rpm, even with the exhaust off, also the injectors, coil packs and plugs have been changed sofar without any luck, any idea?… read more
AAboy
AAboy
Master Technician
Vocational, Technical or Trade Scho
194 satisfied customers
cabrio: 4 coils..obd showing, no dash warning lights on..sensors
Renault Megane 1600cc 16v cabro 2000 (w) Engine misfires when warm Fine on starup (cold), I have changed all 4 coils but no difference. No codes on OBD showing, no dash warning lights on. unpluged eng… read more
Trevor
Trevor
UK Car Mechanic
Vocational, Technical or Trade Scho
853 satisfied customers
renault: reg..16 valve when ticking over it sounds..injector cleaner
i have a x reg renault megane 1.4 16 valve when ticking over it sounds like its missing just had a service so its not the plugs put some injector cleaner in but no luck… read more
Will Auto Technician
Will Auto Technician
Vocational, Technical or Trade Scho
84 satisfied customers
An astra 1.4 16 valve (x reg)..clears..local mechanic..EGR valve
I have an astra 1.4 16 valve (x reg), for a while now the car is stuttering, especially at junctions when it is slow to pull away (feels likes its choking) then clears and jolts forward, local mechani… read more
vauxdoc
vauxdoc
Vocational, Technical or Trade Scho
I have a citroen saxo 1600 8valve2001 reg..shops..petrol..indicator
I have a citroen saxo 1600 8valve2001 reg. Just driving back from the shops and the orange engine icon started to flash and experienced lack of power petrol low indicator came on shortly after.Symptom… read more
Mike
Mike
Proprieter / Diagnostic Technician
High School or GED
Mondeo 2001,1.8 petrol engine. rough running on tickover.
mondeo 2001,1.8 petrol engine. rough running on tickover. iac valve working overtime. no sign of air leak. no fault codes. new coil pack. map sensor replaced due to contamination. inducing air leak do… read more
Michael Partington
Michael Partington
Auto Electrician
High School or GED
603 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x