jayorme
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Registered: 26th Jan 04
Location: Heckington, Lincolnshire
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Whats involved in changing an ECU on a Corsa 1.4 16v (1996)?
Do I just get hold of a 2nd hand ECU and get it reprogrammed or can I get all the parts from a donor car so I dont need to reprogram it? If its the 2nd answer which parts would i need?
Cheers
Jay
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Adam-D
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Registered: 11th May 02
Location: Cheshire
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i belive your car is a pre immob
so you need to find a pre immob ecu, then unplug your one and plug in the new one
have to tried changing the coil-pack?
also get your ecu out and find the number on it,
plus if it does have a immob i have a eco, chip, and transponder ring.
when you turn it over does the engine light flash fast?
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Adam-D
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Registered: 11th May 02
Location: Cheshire
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to determine if its immob or not, is your key totally flat and square ish or rounded?
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jayorme
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Registered: 26th Jan 04
Location: Heckington, Lincolnshire
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ECU doesn't flash when engines turning over..
Changed the Distributer? (black part the HT leads go into). Is that the Coil Pack?
ECU has the following onit:
16214239
Delco Electronics
GM JS
BWJN
096017
Keys rounded with a circle onit.. Sounds like theres something init when shuck (and no its not a bulb :-))
cheers
Jay
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Adam-D
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Registered: 11th May 02
Location: Cheshire
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right
i may be able to help you 
i have a complete ecu-transponder-and immob ring
i also have a full engine loom for the same car/ecu
£70 inc recorded delivery
ill get a pic of ecu. can get one of loom as im very very ill and cant get down the stairs  
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Adam-D
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Location: Cheshire
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Adam-D
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Registered: 11th May 02
Location: Cheshire
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numbers are
16214239 gm js
delco electronics
d96017 made in uk bzkw
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Adam-D
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Location: Cheshire
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but as i have the loom aswellthat will rule out that aswell
can you get a pic of your key and also take off the plastic shroud round the ignition/steering coloum and see if there is a black ring round the ignition with a box under it and a wiring plug on it
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Adam-D
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Registered: 11th May 02
Location: Cheshire
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top left, transponder ring
right - ecu
bottom left > little black thing is the chip that goes in the key
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jayorme
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Registered: 26th Jan 04
Location: Heckington, Lincolnshire
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Yep. Black ring and box with wiring loom are there.
Heres the key
Now removed (far to big a pic!)
Would this still look possible even though the guy managed to drive the car here? Over the last 6 weeks I have started the car but never actually been able to get it going (ie rev).. Just spluttered for a few seconds and cut out?
Cheers
Jay
[Edited on 16-04-2006 by jayorme]
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Adam-D
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Registered: 11th May 02
Location: Cheshire
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is the exhaust black and sooty?
if its massivly over fueling that will cause it there are 2 coolent sensors on the thermostat if they go itll overfuel
also the ecu can cause it if its buggered
what sensors have you changed so far?
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jayorme
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Registered: 26th Jan 04
Location: Heckington, Lincolnshire
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not black & sooty (but not really been started for 6 weeks so may have cleared with the weather). Guy who dropped it off reckoned it went through £10 of fuel on the 20 mile trip but he was revving it to hell... This is the problem with the car.. Could end up throwing another £200 onit and not get anywhere. Wish I'd bought the wife a newer sport now rather then a polo. Could have at least swapped parts over then to test. :-)
Jay
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jayorme
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Registered: 26th Jan 04
Location: Heckington, Lincolnshire
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oh almost forgot..
So far changed the Fuel Pumper, Filter & relay. The Distributer, Camshaft & crank sensor. Throttle body with sensors. HT leads & plugs.
Jay
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Adam-D
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Registered: 11th May 02
Location: Cheshire
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so really it can only be the ecu and loom, or the 2 sensors on the thermostat cover
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jayorme
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Registered: 26th Jan 04
Location: Heckington, Lincolnshire
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Where abouts are the 2 sensors and the thermostat? (just checked the Haynes manual but as its wrote for the X16XE its not the greatest help!) If I unplugged them would it make any difference to try to eliminate them before looking at the ECU?
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Adam-D
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Registered: 11th May 02
Location: Cheshire
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it may help umplugging them
as you look at the engine from the front the left radiator hose "s shape" goes into the engine
thats the themostat there are 2 sensors there
1 has 1 wire and i think it controls the dash
the other is like an auto choke "i think" has a blue plug on it or part of it and has 2 wires
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jayorme
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Registered: 26th Jan 04
Location: Heckington, Lincolnshire
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Cheers for all your help Adam..
Will have a think and come back to you...
Jay
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