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Engine revs.....Help!
Njung'e
#1 Posted : Monday, August 26, 2013 4:17:17 PM
Rank: Elder

Joined: 2/7/2007
Posts: 11,935
Location: Nairobi
Out of the blues,my engine revs have suddenly shot up a while ago and the car is now uncontrollable.It starts well but once i engage D,damn revs start going up with my foot off the accelerator.The thing shifts gears thus without any aid but the shocker is when i stop and put the car in P.The revs are suddenly jumping from an average of 2K to around 4K.I am not near a dealer and i fear driving it all the way as i may cause more damage.What could this be?.Fuel?,choked oil filter?AT failure?.It's hardly 900Km from the last service and i have done around 600Km in the last 2 days eventlessly.Pray
Nothing great was ever achieved without enthusiasm.
Njung'e
#2 Posted : Monday, August 26, 2013 6:24:51 PM
Rank: Elder

Joined: 2/7/2007
Posts: 11,935
Location: Nairobi
No clues good people?
Nothing great was ever achieved without enthusiasm.
jamplu
#3 Posted : Monday, August 26, 2013 6:35:08 PM
Rank: Veteran

Joined: 3/25/2010
Posts: 939
Location: Nai
Check all Vacuum hoses for leaks if that doesn't work. check your Idle Air Control (Valve)-IACV might need some cleaning or replacement.
What car is it?
digitek1
#4 Posted : Monday, August 26, 2013 6:45:55 PM
Rank: Veteran

Joined: 2/3/2010
Posts: 1,797
Location: Kenya
stuck accelerator cable? common with toyos
I may be wrong..but then I could be right
Njung'e
#5 Posted : Monday, August 26, 2013 7:48:10 PM
Rank: Elder

Joined: 2/7/2007
Posts: 11,935
Location: Nairobi
jamplu wrote:
Check all Vacuum hoses for leaks if that doesn't work. check your Idle Air Control (Valve)-IACV might need some cleaning or replacement.
What car is it?


@Jamplu/Digitek
Hoses checked.Stuck acelerator cable.Not possible.The Idle Air Control?I think i need an expert.It's an E200.
Nothing great was ever achieved without enthusiasm.
jamplu
#6 Posted : Monday, August 26, 2013 9:00:12 PM
Rank: Veteran

Joined: 3/25/2010
Posts: 939
Location: Nai
Njung'e wrote:
jamplu wrote:
Check all Vacuum hoses for leaks if that doesn't work. check your Idle Air Control (Valve)-IACV might need some cleaning or replacement.
What car is it?


@Jamplu/Digitek
Hoses checked.Stuck acelerator cable.Not possible.The Idle Air Control?I think i need an expert.It's an E200.


Is there noticeable loss of power? mass air flow sensor would result to that too but. maf problem would however be easily detected if right diagnostic tool is used and done by someone who knows what they are doing. caution don't start replacing parts if not sure what the problem is...
mlefu
#7 Posted : Monday, August 26, 2013 10:39:45 PM
Rank: Elder

Joined: 2/11/2007
Posts: 1,680
Location: nairobi
E200...madam admin...please bring back guka wa bijuti ...hapa siwesmake!

Impunity
#8 Posted : Tuesday, August 27, 2013 11:15:39 AM
Rank: Elder

Joined: 3/2/2009
Posts: 26,331
Location: Masada
Open the bonnet and remove the vacuum hoses as the eng idles and see if there is any change in Revs...if not then the vacuum hoses are okay. Check the accelerator pedal position sensors they could have having dust and thus misreading the position, also check the throttle position sensors/gear lever position sensors...these may require to be done in a garage...Before you replace anything please start with inspecting and cleaning the sensor targets!
If you were driving your personal bijuti made in 1967 you wont be having these problems of sensor since the car only had a fuel tank quantity sensor!
Portfolio: Sold
You know you've made it when you get a parking space for your yatcht.

Njung'e
#9 Posted : Tuesday, August 27, 2013 1:28:37 PM
Rank: Elder

Joined: 2/7/2007
Posts: 11,935
Location: Nairobi
@Jamplu,
Your input has been valuable and thanks so much.I was zeroing in on MAF but wait until you here the problem.

@Digitek,
You were right.Very right my man.I was looking in the wrong place.

@Mlefu,
Ungirohia nda ugichunga.

@Impunity,
Laughing out loudly Laughing out loudly I am going back to my Bijuti.Hii Ndijito ni ngumu!

Problem solved.Here is what happened.Some weeks back,the bonnet cable detached from it's lever with a damaged retainer hole.I decided to change the lever and the guy who did the job did not secure the plastic cover well.The cover is usually insulated with lagging material (Anti-heat).Seems as i used the car,this lagging material ,aided by the loose cover finally found it's way to the front of the second acceleration lever and wedged it forward thus pushing the accelerator in.......After securing the cover,all went back to normal.relief nayo?....So Digitek was right,only that i was looking from under the bonnet.Cheers all and thanks.Applause
Nothing great was ever achieved without enthusiasm.
innovator
#10 Posted : Tuesday, August 27, 2013 1:53:56 PM
Rank: Member

Joined: 7/24/2010
Posts: 239
Location: nairobi
This is what i have learnt over the years, most of our problems are created in the garage, when there are looking for one problem, they create more than other two.
Loose/missing bolts and nuts.
missing parts.
Wrong parts.

Just to name a few.

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