Gaston
Member
Registered: 3rd Feb 04
Location: Birmingham
User status: Offline
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Hi everybody
Couldn't find any information like this in the archive so perhaps someone out there could help.
Have a S-reg Corsa 1.2 16v "Breeze". Problem is that the engine is 1) Feeling weaker and weaker. 2) Hesitates for a couple of seconds when accelerating from standing in 1st gear (at redlights) 3) On the motorway doing about 75 mph (which seems to be near top speed now) when trying to accelerate the same hesitation plus the engine warning light comes on. Goes off again when backing of the accelerator and return to legal speed.
What is this, air supply, fuel, spark, electronics? Age?
Cheers,
Ben
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Adam-D
Member
Registered: 11th May 02
Location: Cheshire
User status: Offline
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if the engine light stays on for 30 secs or more then it will have logged a fault and u can find out that way
when was the plugs/leads fuel filter last changed?
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Gaston
Member
Registered: 3rd Feb 04
Location: Birmingham
User status: Offline
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Dont know - wife's car! But always Vauxhall serviced so I assume plugs have been changed. Perhaps filter and leads could need replacing...
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Adam-D
Member
Registered: 11th May 02
Location: Cheshire
User status: Offline
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check condition of leads do they look like new of old cracked etc
id get the plugs changed anyway vaux wont itd cost them money
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MikeH
Member
Registered: 3rd Apr 03
User status: Offline
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My car used to hesitate very badly from the lights.
It's worse in the summer.
I fixed it to some extent by using a higher octane fuel. Shell Optimax..
So i think it may be caused by pinking... the knock sensor may be retarding the timing causing a hesitation.
My engine management has come on just once.... briefly.
If your has been on for more than 30 seconds there will be a fault listed and the ecu may be running on an emergency setting causing your reduced top speed.
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Gaston
Member
Registered: 3rd Feb 04
Location: Birmingham
User status: Offline
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Hi MikeH
I know pinking... oh those days under the bonnet of my MGB...
A couple of questions now:
- how do I check a listed fault
- how do I reset ecu, disconnect battery for some time?
- I can always try higher octane, but is there another way of adjusting pre-ignition (a take it turning the distributor is out of the question :lol
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Adam-D
Member
Registered: 11th May 02
Location: Cheshire
User status: Offline
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do aseach u can do the "paper clip" test and that will tell you i wouldnt reset ecu till ive checked it for listed faults
only way to adjust ignition erm i think is the timing belt but i wouldnt do that
could just be the plugs????
or it could be the knock sensor as mike says
trial and error get the ecu checked for listed fault then rest ecu
plugs n leads arnt that expensive then its onto sensors etc
[Edited on 04-02-2004 by Adam-D]
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MikeH
Member
Registered: 3rd Apr 03
User status: Offline
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To get the ecu fault code you can either use a fault code reader from halfords or you can use a trick with a paperclip.... search on here....
Even if you reset the ecu by disconnecting the battery i don't think it removes fault codes... that has to be done by a dealer (someone tell me if i'm wrong).
Erm is distributorless ignition (DIS) so no you can;t tune the distributor. Not sure how you could adjust it, mine prolly needs the same doing.
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