Idle problems and fault codes. Help please

J2LTB · 04-08-2015, 11:10 PM

The car has been faultless for quite a while. Been really enjoying it. I've noticed the mpg has gone down quite a bit. Strange I thought. Then last week out of the blue the EML light came on. Straight away it went into limp home mode. Zero power.

The car is idling at between 1100 to 1600 rpm

So i plugged it in and had these faults

128 devation idle speed

223 pressure intake manifold

136 idle speed regular

144 & 145 lambda sensors.

I've replaced the idle control valve but the codes 128 and 223 are still present.

Dodgy map sensor ??? BMW want £335 for the sensor 😂😂

Any ideas please

J2LTB · 22-08-2015, 10:10 PM

Quick update of my problems and the fix.

One of the throttle body stop screw head's had snapped. Over time the thread had screwed itself in more holding the butterfly open when it should have been shut on idle. Thus causing a air leak😀😀😀😅
Only found when we put pressurised smoke through the idle valve rail.

The fix was to remove the damaged thread and renew the bolt and nut. Set it all up and no air leak. Car is now back to its amazing self 😆

digi · 24-08-2015, 11:53 AM

thx for the update. Many don't follow up.

0-60Motorsports · 02-09-2015, 09:26 AM

http://www.cslregister.com/forum/sho...0&postcount=20

04-08-2015, 11:10 PM	#1
J2LTB S5 - Full Throttle Join Date: Apr 2012 Location: Staffordshire Posts: 407 Casino cash: $5472	Idle problems and fault codes. Help please The car has been faultless for quite a while. Been really enjoying it. I've noticed the mpg has gone down quite a bit. Strange I thought. Then last week out of the blue the EML light came on. Straight away it went into limp home mode. Zero power. The car is idling at between 1100 to 1600 rpm So i plugged it in and had these faults 128 devation idle speed 223 pressure intake manifold 136 idle speed regular 144 & 145 lambda sensors. I've replaced the idle control valve but the codes 128 and 223 are still present. Dodgy map sensor ??? BMW want £335 for the sensor 😂😂 Any ideas please __________________ Previously owned CSL No:16 😞

22-08-2015, 10:10 PM	#2
J2LTB S5 - Full Throttle Join Date: Apr 2012 Location: Staffordshire Posts: 407 Casino cash: $5472	Quick update of my problems and the fix. One of the throttle body stop screw head's had snapped. Over time the thread had screwed itself in more holding the butterfly open when it should have been shut on idle. Thus causing a air leak😀😀😀😅 Only found when we put pressurised smoke through the idle valve rail. The fix was to remove the damaged thread and renew the bolt and nut. Set it all up and no air leak. Car is now back to its amazing self 😆 __________________ Previously owned CSL No:16 😞

24-08-2015, 11:53 AM	#3
digi S5 - Full Throttle Join Date: Apr 2009 Location: Hong Kong Posts: 486 Casino cash: $4438	thx for the update. Many don't follow up. __________________ E46 M3 CSL + R35 GTR (bolt on mods 600bhp) + 458 Italia + LP560-4 + Audi S5

02-09-2015, 09:26 AM	#4
0-60Motorsports S5 - Full Throttle Join Date: Aug 2008 Location: Kingdom of Bahrain Posts: 481 Casino cash: $3271	http://www.cslregister.com/forum/sho...0&postcount=20 __________________ EURO 04 M3 Current Mods: GC Coilovers, Eibach Sways, RE RCA?s, VCSL Bumper, OE CSL Boot, VCSL CF Rear Diffusor, DIETZ TV in Motion, SS Stepped Headers and catless, SS Res X Pipe, SS Race exhaust, OEM CSL Steering + interior, OEM CSL Intake, MSS54HP with HTE Tune, BBS CH's/LM?s FX-R Projectors + night breakers, STOPTECH ST60/40, RE Front strut brace, DINAN Rear Strut Brace,