V4 type r slight idle problem,any advice please?
#1
Scooby Regular
Thread Starter
iTrader: (2)
Join Date: Mar 2011
Location: Kettering
Posts: 305
Likes: 0
Received 0 Likes
on
0 Posts
V4 type r slight idle problem,any advice please?
Right my idle was fluctuating between 800 -1050ish and occasionally throws on the check engine light code 24.now this isn't a constant problem it will sometimes sit at 800 perfectly for a long period of time,come to next set of lights and it will drop below 800 then straight back up and fluctuate 800-1050 ish quite gracefully then settle at 800 again.
I have taken icv off,cleaned inside checked to make sure everything moves freely and cleaned the diaphragm and just inside inlet and both surfaces for new gasket and re assemble.
Let the car idle up to temp and adjust idle to 800 once warm and then disconnect battery for 30min to a hour to Clear stored code
Start car and let it idle at 800 for a while then out for a drive and then same problem and eventually check engine light and code 24!
I have had throttle position sensor set correctly,no air leaks,maf seems ok and the car dies when unplugged
Tried a second hand icv and was promised it worked so I cleaned with new gasket and repeated same steps as above and still pretty much the exact same problem
It's not a majorly rough idle but annoying sitting at lights and junctions but is there anything else I could try as a new icv is quite pricey if it won't cure the problem
Any suggestions please and apologies for the essay
I have taken icv off,cleaned inside checked to make sure everything moves freely and cleaned the diaphragm and just inside inlet and both surfaces for new gasket and re assemble.
Let the car idle up to temp and adjust idle to 800 once warm and then disconnect battery for 30min to a hour to Clear stored code
Start car and let it idle at 800 for a while then out for a drive and then same problem and eventually check engine light and code 24!
I have had throttle position sensor set correctly,no air leaks,maf seems ok and the car dies when unplugged
Tried a second hand icv and was promised it worked so I cleaned with new gasket and repeated same steps as above and still pretty much the exact same problem
It's not a majorly rough idle but annoying sitting at lights and junctions but is there anything else I could try as a new icv is quite pricey if it won't cure the problem
Any suggestions please and apologies for the essay
#3
Scooby Regular
Thread Starter
iTrader: (2)
Join Date: Mar 2011
Location: Kettering
Posts: 305
Likes: 0
Received 0 Likes
on
0 Posts
Would the temp sensor throw up code 24?
Also should of mentioned for the period the check engine light is on it will idle slightly rougher and settle down abit once light goes off
Thanks
#5
Scooby Regular
iTrader: (3)
Join Date: Jul 2008
Location: nottingham
Posts: 526
Likes: 0
Received 0 Likes
on
0 Posts
If it's running a cone filter try putting the standard air box on with a upratedd panel filter .I've had 2 imprezas that spat their dummies at cone filters but ran fine on standard air box
Trending Topics
#12
Scooby Regular
Andy c said it was faulty knock sensor or bad grounding making the ecu go to safe mode, stopping any damage to the engine. Though since I had a new knock sensor just a few weeks ago, I've left it there while they look over the grounding.
Hope that helps
#13
Scooby Regular
Thread Starter
iTrader: (2)
Join Date: Mar 2011
Location: Kettering
Posts: 305
Likes: 0
Received 0 Likes
on
0 Posts
I'm not sure. Literally only know cos I took mine into scooby garage yesterday with pretty much the same problem. Idling at 4-800 rpm, then after 10 mins idling at a mates house engine light comes on but idling is now 500rpm no jumping.
Andy c said it was faulty knock sensor or bad grounding making the ecu go to safe mode, stopping any damage to the engine. Though since I had a new knock sensor just a few weeks ago, I've left it there while they look over the grounding.
Hope that helps
Andy c said it was faulty knock sensor or bad grounding making the ecu go to safe mode, stopping any damage to the engine. Though since I had a new knock sensor just a few weeks ago, I've left it there while they look over the grounding.
Hope that helps
Thread
Thread Starter
Forum
Replies
Last Post
arthur.d
Engine Management and ECU Remapping
6
19 December 2015 08:47 PM