engine replaced, car wont start

[mad4mp3z]

hi all, as said in the title, i have replaced my engine, the key fob opens the door, but when i try start the car i get a single click from engine bay and fast flashing red light in the dash display, any ideas??

Thanks
Shaun

 

[MicKPM]

Check your earths and general connections under the bonet.

 

[mad4mp3z]

thanks for that mate, iv checked all the connections, and still no joy, everything lights up on the dash and the red immobiliser light flashes fast, a while back i disconected the alarm due to a fault, by removing the fuse under the dash, would that cause issues ??, also during the time my car was off the road, my keys got run over, and broke was without a battery for 2 weeks, but the board inside the fob was fine, it still lights up and works the door so i guess this aint an issue

Thanks
Shaun

 

[sonny172cup]

I had same problem, when I was using jump leads to start the car (from battery to connection points to save putting the battery back in the car), I then connected battery directly to to car and engine fired up, just an idea if you are not already doing so.

 

[Big Bob]

Will be an earth to test it get a big cable clamp it to the engine battery - if it starts you need to find the missing connection, had same thing on one once the exhaust was glowing bright red lol

 

[mad4mp3z]

hi, tryed teh jump cable from negative direct to engine, still same, red light flashes fast and a single click from engine, how annoying lol

Thanks
Shaun

 

[Dan@SJM]

How did the key get broken? There is a chip on the board that's fragile as f**k.

 

[M4D M4X]

I had a similar problem turned out to be the gearbox earth strap (by the lower mount) while your at it check the one above the n/s drive shaft.

 

[mad4mp3z]

How did the key get broken? There is a chip on the board that's fragile as f**k.

it got ran over by a car, the case smashed, , on the board, the arial for the fob broke off as did the switch to lock/unlock, but iv replaced both and the key works, unlocks and re-locks the car, iv checked all the tracks on the board and they are also fine,

and im assuming it isnt an earth issue as i hooked a jump lead from the battery to the top end of the engine

it getting quite irratating now having spent all that cash on another engine and now its in , nothing

Thanks
Shaun

 

[Harbinger]

isn't this just something to do with the immobilizer? did the key get reprogrammed properly? I thought the flashing light was the immobilizer, excuse the Z's i'm using Chrome at work.

 

[M4D M4X]

Not sure if you know but 1 earth strap is not just to control 1 item so putting a earth on the engine will not work in the same way, i've stripped the protective tape around the loom and traced wires that was not needed and a lot of things go to a join where others come into it and go elsewhere so acting as a loop so 1earth strap/wire can be used for any number of things.

The immobiliser shouldn't need programming if he used the same ecu/uch to the key he had originally.

 

[Dan@SJM]

That key will be the issue then.

 

[Cup_Phil]

As said it's the key

There is a little tiny black transponder chip in the key case that is read by a pickup ring around the ignition barrel - if it can't read that chip the immobiliser won't turn off

Also that is controlled by the ECU and has nothing to do with the alarm - the alarm is just a cheap bolt-on.

You'll need to get a key coded to your car

 

[mad4mp3z]

yeah, from what iv been reading, its most likley the key, was looking online at an immobiliser bypass that plugs in under the ash tray its gonna b cheeper than getting a new key programed, anyone had any experiance with these??

Thanks
Shaun

 

[MicKPM]

I hate them... and you'll need to declare it to your insurance company. Honestly, just bite the bullet and get a new key fob supplied (£90) then get it programmed (£45 at most) as you already have a working blade.

 

[mad4mp3z]

been looking at other options, can get a blank key here quite cheep, then get a local locksmith to come out and program it, that could work out a tad cheeper

 

[Darius]

Isn't there a way you can program the key to your car yourself by putting it and the ignition and doing a sequence of presses or something?

 

[ScottL]

No it has to be programmed to the car the only other option is to buy a ECU uch and key and replace the lot as said before the keys are made of chocolate

 

[MicKPM]

Erm... no. That wouldn't be very security conscious would it.

 

[Harbinger]

if you have the code Timpsons have a device to program transponder keys, cheap too.

 

[Cup_Phil]

been looking at other options, can get a blank key here quite cheep, then get a local locksmith to come out and program it, that could work out a tad cheeper

A locksmith won't be able to code a transponder chip to your UCH/ECU
Just get one from renault lol

 

[Darius]

Erm... no. That wouldn't be very security conscious would it.

Oh I thought was a way you could reprogram the key

 

[Simon_16v]

Oh I thought was a way you could reprogram the key

That's probably for the remote central locking