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Author x18xe1 Running rough/Missing
Bissmire
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Registered: 30th Sep 08
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30th Mar 11 at 11:17   View User's Profile U2U Member Reply With Quote

OK, so I have had some problems recently with my Corsa running an x18xe1 lump.

It was idling rough, and sometimes stalling when approaching junctions and coming to a stop. I carried out the yellow wire mod which fixed the issue, but it starting to return (Slightly different idle, more erratic so maybe not related to YWM)

I have since replaced the Lambda, Cam and Crank sensors. I also started the engine, and when I unplugged the MAF the idling became better. I then replaced the MAF, but the car still ran like shit. Next up is coil pack, but I was wondering if anyone has had similar problems, and how you solved it? If the coil pack doesnít solve the issue I havenít got a clue what else it could be...
djgritt
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Registered: 1st Nov 07
Location: North Dorset Drives: Monaro SC / Abarth595
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31st Mar 11 at 00:26   View Garage View User's Profile U2U Member Reply With Quote

Replace the MAF with a KNOWN working one as a test.

Mine had all these symptoms - did the wiring mod and it seemed to improve it, but didn't. Plugged in another MAF and it was worse, then refitted one that was in beforehand and it worked the same as if the guffed one was unplugged - fitted a brand new GM one, and everything went away straight off and it been fine since
Hodgy
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Registered: 29th Dec 09
Location: Felling, Tyne and Wear
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31st Mar 11 at 07:07   View User's Profile U2U Member Reply With Quote

you changed the egr valve ??
common fault on a x18xe1 see if it had a hole in it turn the engine on and spray carb cleaner on it if revs change you know it is sucking air in some where

also is your fuel pressure spot on ???
Bissmire
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31st Mar 11 at 08:18   View User's Profile U2U Member Reply With Quote

I replaced the MAF with a brand new Siemens VDO item, and it did improve things slightly so I'm not sure its that. Don't fancy spending another £117 for a GM MAF incase it has no affect. Thing is, it seems to idle fine when the automatic choke kicks in, but them idles lumpy, and misses. Sounds completely different too. Going to check the Coilpack tonight.
Bissmire
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31st Mar 11 at 08:19   View User's Profile U2U Member Reply With Quote

I blanked the EGR off on Monday which helped things a little, was told it was done so didnt check, but turns out it wasn't.
Hodgy
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Location: Felling, Tyne and Wear
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31st Mar 11 at 09:12   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Bissmire
I blanked the EGR off on Monday which helped things a little, was told it was done so didnt check, but turns out it wasn't.


Clean throttle body mate there is a breather. Hose that goes to the rocker cover size of a pin head gets clogged causes all sorts of problems
Bissmire
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31st Mar 11 at 09:20   View User's Profile U2U Member Reply With Quote

Yeah I cleaned the Throttle Body too

Havn't cleaned the breathers so I'll try that.

My gut feeling still says coilpack, but then again I was convinced it was MAF

Hodgy
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Registered: 29th Dec 09
Location: Felling, Tyne and Wear
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31st Mar 11 at 10:16   View User's Profile U2U Member Reply With Quote

Only others could be the cts or the carbon canister not plumbed in properly
Bissmire
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31st Mar 11 at 10:21   View User's Profile U2U Member Reply With Quote

Yeah, well fingers crossed I'll get it sorted tonight, if not, expect to see this bumped
Bissmire
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31st Mar 11 at 18:23   View User's Profile U2U Member Reply With Quote

Just found a crack on the Inlet Manifold
djgritt
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Registered: 1st Nov 07
Location: North Dorset Drives: Monaro SC / Abarth595
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31st Mar 11 at 18:34   View Garage View User's Profile U2U Member Reply With Quote

Ouch. That won't help!
Bissmire
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31st Mar 11 at 18:44   View User's Profile U2U Member Reply With Quote

Maybe an excuse to get an uprated item Looking to see if z18xe manifolds bolt straight on, if so may just get one of them for the time being.
Hodgy
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Registered: 29th Dec 09
Location: Felling, Tyne and Wear
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31st Mar 11 at 19:47   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Bissmire
Maybe an excuse to get an uprated item Looking to see if z18xe manifolds bolt straight on, if so may just get one of them for the time being.

Z18xe standard inlet. Bolts straight on mate obviously use x18xe1 throttle body lol I have just baught uprated black one lol so will see what its like
Bissmire
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31st Mar 11 at 21:32   View User's Profile U2U Member Reply With Quote

Yeah nice, I've seen those dbilas reps on ebay, look good. Let me know what theyre like
Hodgy
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Registered: 29th Dec 09
Location: Felling, Tyne and Wear
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1st Apr 11 at 12:09   View User's Profile U2U Member Reply With Quote

i will do mate its on me build thread when i add pictures i just hope im not dissapointed.... lol
Bissmire
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26th Apr 11 at 14:44   View User's Profile U2U Member Reply With Quote

Incase anyone was wondering, took the inlet off to find a 3"x1" hole on the side by the alternator. Guess that explains it Fitted a new inlet, cleaned the TB, blanked the EGR and fitted my John Ashley 4-1 and it runs better than ever, very happy
djgritt
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Registered: 1st Nov 07
Location: North Dorset Drives: Monaro SC / Abarth595
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26th Apr 11 at 22:05   View Garage View User's Profile U2U Member Reply With Quote

Much difference noticed from the Manifold?

Thinking of one for myself very soon...
Jed D
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Registered: 15th Mar 11
Location: Durham
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27th Apr 11 at 09:21   View User's Profile U2U Member Reply With Quote

do them manifolds hang low?
Bissmire
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27th Apr 11 at 09:55   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by djgritt
Much difference noticed from the Manifold?

Thinking of one for myself very soon...


Not a huge difference, but feels and drives so much better. It feels a little pokier, but that could be down to the fact that the hole in the inlet was causing it to run rough. Well worth cleaning the TB out as I think that has helped a lot.
Bissmire
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27th Apr 11 at 09:56   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by JedDy
do them manifolds hang low?


No, but my sump plug is about 2" off the floor so the manifold is the least of my worries

 
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