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fitted a new engine



hey guys,
slight problem. Iv got the new engine fitted and ready to fire...but she don't fire:S

she is getting fuel and turning fine but she's not getting spark.iv checked if theres current going to the coilpack but theres not...
whats would be the likely cause??
thanks
chris
 
Thanks for the help.
I cleaned the earth from the front of the gearbox to the chassis but still won't start.
Also looked at the relays but the connections looked fine.
Any other ideas? Don't really wanna take it to a mehcanic tomorrow as he will prob charge me €150 to €200 as he will plug it into a laptop
thanks again
 
No deff not the immobiliser as the light goes out after 3 secs.
Tdc?

Does sound very much like immobiliser, I had the same sort of problem. Injectors wont fire nor will the coilpack if its active. Although it could be a number of other things too. I thought it cant be the immobiliser (as my ECU was decoded) but it was.

Whats the red light doing in the middle of your clocks on the dash? Flashing on cracking?
 
It flashes as normal then when you put in the key after 3 secs it goes away same as my ph1 1.2
so don't think it's the immobiliser or hope not :(
I'll look at the starting motor earth later as at work.
When I put a wire into coilpack connection the yellow wire and tip it off the body there is a spark only sometimes. The power goes from it then when I try to start it.
 

Cro

  Meg'd r27
I would have thought earth straps. Check theres a good battery connection, checked the fuses?
Get it cranked by hand see how that goes. Any noises when trying to start normally?
I was in Limerick yesterday pity you didnt put this up then, galway tomorrow
 
She cranks from hands perfect. No weird noises put of it.It has a brand new renault battery so the terminals are fine. The fuses in the car or engine bay?check the ones in the bay. Swaped the relays aswell. Not in limerick city in small town called abbeyfeale.Still a pitty do as been trying to get it starting since Wednesday morning..
I don't think that it's the earth strap as if the earth was dirty wouldn't it sound weired when turning over???
 
  172 & LCR
earth straps?

one near the starter motor and front gearbox iirc

I've had this before earth that bolts at the right hand side of the gearbox as your looking in the engine bay above passenger side driveshaft make sure you have tightened it as it causes all kinds of probs.
 
checked the two earth points both seamed fine but cleaned them anyway still no go.
change ECU??
no still got my ph1 ecu i thought the engine were the same so all you had to do was to change engine??
 
well i man'ed up and gave the engine to the mechanic yesterday evening.

but no code is comming up on the laptop for him:mad: so he dont even know whats wrong with it.he cant figuire out why no power is going to the coil pack.

he is going to disconnect the battery and leave it "drain" till monday.dont think that will help anything do:(
 
checked inside car yes.all that was really there was the fuse for the radiator iirc.

uch.amm that is behind the fuse box IN the car yes?
amm i dont know i never had to go at it.
what will i check for in there??
 
  Astra GSI, 172, Golf
there willbe a fuse for it inside the car with all the others . altho mines a derv i had same kinda problem and it was that at fault
 
  Astra 1.9Cdti SRi
checked inside car yes.all that was really there was the fuse for the radiator iirc.

uch.amm that is behind the fuse box IN the car yes? Yes
amm i dont know i never had to go at it.
what will i check for in there??

Have you checked all Earth's?

Theres 3 in the engine bay, gearbox to chassis, the one near the starter motor and other is on the rear driver side of the bay down there..

Id also check the TDC/Crank shaft sensor, this can stop it firing up, its on the gearbox bellhousing. if its a old sensor(black) replace it with a blue one.
 
Have you checked all Earth's?

Theres 3 in the engine bay, gearbox to chassis, the one near the starter motor and other is on the rear driver side of the bay down there..

Id also check the TDC/Crank shaft sensor, this can stop it firing up, its on the gearbox bellhousing. if its a old sensor(black) replace it with a blue one.


The mechanic rang again today and said he's checked everything; He said he still cant get a reading from the diagnostic. Iv checked the following earths; Earthstrap from Gearbox-to-chassis, the earth from the negative terminal-to-chassis & the earth on the top of the gearbox. Am I still missing one? One last question.... I was told by the seller its a 182 engine, Iv put it into a 172 shell using the 172 loom.... Are the flywheels the same on the 182's&172's? If their different then this would explain her not getting spark. Thanks for the help guy's; much much appreciated
 
Hey guy's, Iv a new Crank sensor ordered from Renault and Im just going collecting it now but one quick question;
The spark plug arrangment - Now I know its numbered on the coilpack and the leads but what arrangment is it on the head? Just to make sure its done right before the new crank sensor is fitted
 
  Lionel Richie
cambelt end is no 4, 3, 2, 1 gearbox end

172/182 engine - doesn't matter

there's a loom earth that bolts to the top of the gearbox (above the driveshaft)

there's a second loom earth that bolts to the main battery earth cable (well goes through the second bolt anyway)
 
  Ph1 172 & Clio DCi
I've had 4clios that have done this now.

2 of them came in running and wouldn't start after an engine change.

All 4 I replaced the engine bay loom and they fired straght up :)
 
cambelt end is no 4, 3, 2, 1 gearbox end

172/182 engine - doesn't matter

there's a loom earth that bolts to the top of the gearbox (above the driveshaft)

there's a second loom earth that bolts to the main battery earth cable (well goes through the second bolt anyway)


Thanks for the quick reply Fred;)
Iv the sparkplug arrangment on right so, phew!
Iv the earth on the top of the gearbox double checked,
Iv also the earth strap from gearbox-to-chassis double checked... hell even triple checked at this stage!
Im slightly stumped about the last one your talking about Fred... Do you mean the earth coming off the negative terminal?(bolted just behind the passenger side headlamp)
Just back from Renault & Iv got the CPS in my hand now so Ill go fit that and praaaaaaise the lord that'll solve it
Thanks once again for your help&quick reply
 
sounds even more like the relay/fuse box wiring, and you're not powering up the ECU

Looks like you were right! I bought the new crank sensor & got it fitted but made no difference so The mechanic finally got back to me today after he had another look at it and said it has to be the fuse/relay box thats fecked as its not powering up the ECU like you said. Whats the solution to this; Go away & get a new Fuse/Relay box or just have a look at the wiring going to the box?
Thanks for the help;)
 
Hey guy's, Was at the mechanics today and changed all the relays in the U.C.H but still no luck, so now he tells me to get a new U.C.H box along with the E.C.U, key&barrel. Should this get her firing?
 
  Lionel Richie
i haven't seen a failed engine loom in 10years Michael (not saying that it can't happen, but i'd be VERY surprised), its always something stupid like fuel pump relay or blown fuse
 
  340i
if youve fitted a new engine it wont be anything to do with the ECU, UCH, keys etc. thats just pissing in the wind!

I put my money on a relay, fuse or earthing
 

Cro

  Meg'd r27
Have to agree with Fred and Gray, been that with any of the cars I have worked on
 
  340i
sometimes a fresh set of eyes to take a look over can help (yes I know that is common sense) but always worth pointing out!

They may spot something very obvious that you have overlooked / missed?!
 
if youve fitted a new engine it wont be anything to do with the ECU, UCH, keys etc. thats just pissing in the wind!

I put my money on a relay, fuse or earthing


But if it was a relay, fuse or bad earh would it stop the diagnostic getting a reading?

Im not too sure about the relays but Iv checked all the fuses and they all seem fine and as for the earths Iv checked the following numerous times; Engine-to-Gearbox earth strap, Earth on top of the Gearbox and the earth coming off the Battery negative terminal going to the body(Behind the Headlamp) Im at my whits end here:( Thanks for the help guy's, much appreciated
 
Last edited:

Da

  Less
Have you checked the relays and fuses in the bay? (Sorry haven't read it all).

Does everything work electrically in the car otherwise?
 


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