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Author Decent Tutorial for X18XE1 Lumpy Idle/EML fix
Bissmire
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Registered: 30th Sep 08
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23rd Feb 11 at 10:40   View User's Profile U2U Member Reply With Quote
As there are more x18xe1 conversions popping up on here, I thought it might be a good idea to post this.

Its a fix for the lumpy idle/EML/throttle response issue that plagues a lot of x18xe1 engines. Most garages will tell you it is a common ECU issue, and will try to sell you a new ECU kit which is costly to say the least. I've been trying to sort the issue for a while now, and came across this on AOC which seems to have worked a treat.

http://www.astraownersclub.com/vb/showthread.php?t=254138
Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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23rd Feb 11 at 10:42   View Garage View User's Profile U2U Member Reply With Quote
surely this is just doing the equivalent of ebay resistor chips and disabling the MAF thus overfueling your car

Bissmire
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23rd Feb 11 at 10:47   View User's Profile U2U Member Reply With Quote
I've got no overfuelling, niether have any of the guys that replied to the thread?
Steve
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23rd Feb 11 at 10:49   View Garage View User's Profile U2U Member Reply With Quote
its not the type of thing youl notice unless you are doing some measurements via odb?



[Edited on 23-02-2011 by Steve]
Bissmire
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23rd Feb 11 at 10:50   View User's Profile U2U Member Reply With Quote
Ah right OK, well in that case I havn't got a clue mate. I've spent £200+ on sensors to no effect, so this was really a last ditch attempt, but it worked...

[Edited on 23-02-2011 by Bissmire]
Steve
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23rd Feb 11 at 11:11   View Garage View User's Profile U2U Member Reply With Quote
keep an eye on it just incase. Your plugs will be a tell tale after a time
Bissmire
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23rd Feb 11 at 11:23   View User's Profile U2U Member Reply With Quote
Ok thanks I'll check it out. It's having a service on Sunday so I'll have a look then.
Warren G
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23rd Feb 11 at 11:24   View User's Profile U2U Member Reply With Quote
you just re ground two earth wires, done a few at vx before
Bissmire
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23rd Feb 11 at 11:27   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Warren G
you just re ground two earth wires, done a few at vx before


Two? I thought it was the one yellow wire from the MAF?

Have you had any overfuelling issues?
Warren G
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23rd Feb 11 at 11:37   View User's Profile U2U Member Reply With Quote
its the gound for the maf and cts i think, your just take the earths and bolt them onto the ecu, fixes the p0100 code

i dont have any issues, im running omex
Bissmire
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23rd Feb 11 at 11:51   View User's Profile U2U Member Reply With Quote
Ok cheers, I meant with the cars you've done the fix.
Warren G
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23rd Feb 11 at 12:11   View User's Profile U2U Member Reply With Quote
nope,

why are you saying its overfueling??
DaveyLC
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23rd Feb 11 at 12:23   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Steve
surely this is just doing the equivalent of ebay resistor chips and disabling the MAF thus overfueling your car



It doesnt disable it.. The earth feed is bad from the ECU
Steve
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23rd Feb 11 at 12:30   View Garage View User's Profile U2U Member Reply With Quote
right gotya, makes sense now
Bissmire
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23rd Feb 11 at 12:39   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by DaveyLC
quote:
Originally posted by Steve
surely this is just doing the equivalent of ebay resistor chips and disabling the MAF thus overfueling your car



It doesnt disable it.. The earth feed is bad from the ECU


Thanks mate, I found it hard to believe as there is no mention of it on AOC...
Bissmire
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23rd Feb 11 at 12:39   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Warren G
nope,

why are you saying its overfueling??


Nah, the first I heard aboutn it was on here, seems not though.
Bonney
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23rd Feb 11 at 18:40   View User's Profile U2U Member Reply With Quote
Did this when i got mine along with cleaning out the throttle body. Works a treat!
djgritt
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Location: Dorset Drives: Focus ST / Hyundai i20N
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23rd Feb 11 at 23:21   View Garage View User's Profile U2U Member Reply With Quote
Cheers for the heads up

Will give it a go if my next AFM doesn't clear the codes!
Anty
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Registered: 19th Mar 08
Location: droitwich
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24th Feb 11 at 00:22   View Garage View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Bissmire
As there are more x18xe1 conversions popping up on here, I thought it might be a good idea to post this.

Its a fix for the lumpy idle/EML/throttle response issue that plagues a lot of x18xe1 engines. Most garages will tell you it is a common ECU issue, and will try to sell you a new ECU kit which is costly to say the least. I've been trying to sort the issue for a while now, and came across this on AOC which seems to have worked a treat.

http://www.astraownersclub.com/vb/showthread.php?t=254138



I like this thread !!

thats what i got with mine..
djgritt
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25th Feb 11 at 18:43   View Garage View User's Profile U2U Member Reply With Quote
Just done this tonight, seems to have fixed my issues...

Though, I found that earthing it to the bodywork (even after sanding down to bare metal) didn't help and made it worse, it wasn't even staying running, would fire then die out and not even want to rev - strange as I used my meter and checked the earth continuity from the soldered joint and was getting it all over the engine and bodywork - when I terminated it directly to the engine, it seemed to sort it straight away and now it pulls nicely and without lazy revs or any misifiring.

Off out in it tonight to give it another run, will see if it behaves!
Bissmire
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26th Feb 11 at 01:25   View User's Profile U2U Member Reply With Quote
Good to hear it worked
MarkSport
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26th Feb 11 at 02:07   View User's Profile U2U Member Reply With Quote
Gutted! I sold my mk4 sport last year for pennys because of this. was told I needed an ecu when I could have fixed it for pence
Olsrey
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Location: Bradford   Drives: LET Vectra B
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26th Feb 11 at 12:10   View User's Profile U2U Member Reply With Quote
I'd hate to think how slow my lasses car would be if hers ever needed this doing .
apt1986
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Location: West Yorkshire
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26th Feb 11 at 12:11   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Olsrey
I'd hate to think how slow my lasses car would be if hers ever needed this doing .


When it does need doing, let me know i'll buy it lol
Olsrey
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Registered: 13th Jan 07
Location: Bradford   Drives: LET Vectra B
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26th Feb 11 at 12:13   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by apt1986
quote:
Originally posted by Olsrey
I'd hate to think how slow my lasses car would be if hers ever needed this doing .


When it does need doing, let me know i'll buy it lol
I'm more than competent, just meant because they are dog slow with-out any faults .

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