Ph3 engine into ph1 - Engines Forum - Peugeot 306 GTi-6 & Rallye Owners Club

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Subject: Ph3 engine into ph1

mj2k

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Location: Hertford

Registered: 29 Aug 2014

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Post #1

Apologies for cross-posting this with the 306 cab forum, but thought maybe someone on here might have done this.

I've just got hold of a tired 306 roland garros cab (146k, no service history) and have a nice 75k Ph3 GTi6 engine / box from a rolled '6 with no home, so I figure the two would fit together rather nicely Smile

Since the Roland Garros cabriolet is an early Ph1 I know I should be using a Ph1 gti6 loom / sensors, but I haven't seen one on ebay for ages. Which leaves me contemplating fiddling with the Ph3 loom to make it work in a Ph1.

From what I've gathered it's quite possible to get a ph3 gti6 engine working in a ph1 306 (assuming I didn't accidentally re-lock the ecu), but the instrument wiring will be all wrong. Anyone got any ideas which wires I need to cut / splice in the ph3 loom to get the rev counter, temp gauge, etc working as they should, and whether I need to replace any senders?

Posted 21st Apr 2015 at 01:21

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jeffers Forum Admin

Location: Leeds

Registered: 14 Dec 2003

Posts: 3,702

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Post #2

I have no idea on what is different but suggest speaking to Colin at pug performance, they break a lot of cars as well as modify, if anyone may have a phase 1 Loom lying about, it'll be Colin. Contact details here... http://www.pugperformancemotorsport.com/ Hope this helps. Thumbs up

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Posted 21st Apr 2015 at 08:12

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mj2k

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Post #3

Thanks, might give him a try Smile

Posted 22nd Apr 2015 at 02:21

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mj2k

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Post #4

Problem solved - bought a 'pre-butchered' loom from a Ph2 engine last night, so I won't even have to do any fiddling myself Smile

Posted 23rd Apr 2015 at 10:50

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pugheaven

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Registered: 17 Dec 2006

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Post #5

It should have just plugged and played.... I had a phase one s16 and put a gti6 engine in it, everything worked apart from the oil temp/pressure

Posted 23rd Apr 2015 at 20:26

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armzsc6

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Post #6

pugheaven wrote:

It should have just plugged and played.... I had a phase one s16 and put a gti6 engine in it, everything worked apart from the oil temp/pressure

Would that be the one I used to own? Hmm

Am just about to do this to thirdtimelucky's ph1 but will obviously keep the phase 1 loom and oil pressure sensor so all should work.

Only thing I'm not sure about is will a low boost mapped phase 2/3 ECU work on the phase 1 as immobiliser is completely different....

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Posted 24th Apr 2015 at 10:39

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mj2k

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Post #7

armzs16 wrote:

pugheaven wrote:

It should have just plugged and played.... I had a phase one s16 and put a gti6 engine in it, everything worked apart from the oil temp/pressure

Would that be the one I used to own? Hmm

I've not heard of any issues, as long as the immobiliser is disabled

Posted 24th Apr 2015 at 12:38

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mj2k

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Post #8

pugheaven wrote:

It should have just plugged and played.... I had a phase one s16 and put a gti6 engine in it, everything worked apart from the oil temp/pressure

Depends if it was a Ph1 gti6 engine you fitted, or a later one. From what I've read some things will just 'plug and play' if you stick a ph2/3 loom into a Ph1, but other things (temperature gauge, etc) won't work without a bit of modification.

Posted 24th Apr 2015 at 12:41

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pugheaven

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Post #9

armzs16 wrote:

pugheaven wrote:

It should have just plugged and played.... I had a phase one s16 and put a gti6 engine in it, everything worked apart from the oil temp/pressure

Would that be the one I used to own? Hmm

Never had one that you have owned....

It was my phase one cossack

The engine was a phase 2/3 and everything worked fine

Posted 24th Apr 2015 at 13:16

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armzsc6

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Post #10

Nah wasn't mine then, I bought a sigma S16 with a 6 lump in about 8 years ago.

What did you do about the immobiliser? Still use the keypad? Or disable the keypad somehow or unlocked ecu?

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Posted 24th Apr 2015 at 15:05

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rikky 🦔

Location: cheshire

Registered: 28 Feb 2004

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Post #11

keypad can be disabled by simply unplugging it once unlocked

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Posted 24th Apr 2015 at 17:11

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armzsc6

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Post #12

I've heard that before but is that permanent or only until the battery is taken off.... Then will it kick in again with no keypad to enable start or does it never get immobilised?

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Posted 24th Apr 2015 at 18:27

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pug_306

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Post #13

Will stay unlocked until you plug the keypad back in.

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Posted 24th Apr 2015 at 19:14

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mj2k

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Post #14

I've heard the odd tale here or there about the immobiliser locking itself if the battery's disconnected / reconnected, general wisdom from what I've gathered is to either cut the wire (there's plenty of posts about which one) or to do as I'm doing and get rich_w to remove the immo code for good.

Posted 24th Apr 2015 at 20:43

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mj2k

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Post #15

pugheaven wrote:

It was my phase one cossack

The engine was a phase 2/3 and everything worked fine

Wow, that is a surprise! I've traced through the wiring on my Ph3 loom vs the 'pro butchered' one, and there are quite a few wires shuffled around, not to mention the smaller plug being completely unused. Was your Ph1 a model with the analogue speedo, or the electric one?

If it wasn't such a hassle to replace the loom I'd probably give both a try to see if there is any difference at all...

Posted 24th Apr 2015 at 20:49

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6waysforward

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Post #16

armzs16 wrote:

pugheaven wrote:

It should have just plugged and played.... I had a phase one s16 and put a gti6 engine in it, everything worked apart from the oil temp/pressure

Would that be the one I used to own? Hmm

My ph3 low boost ran of a unlocked ph1 ecu with low boost v2. Still got it if you get stuck.

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Posted 24th Apr 2015 at 21:47

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armzsc6

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Post #17

6waysforward wrote:

armzs16 wrote:

pugheaven wrote:

It should have just plugged and played.... I had a phase one s16 and put a gti6 engine in it, everything worked apart from the oil temp/pressure

Would that be the one I used to own? Hmm

My ph3 low boost ran of a unlocked ph1 ecu with low boost v2. Still got it if you get stuck.

That would be spot on Ben. Not sure if all SC mapped ECU's are unlocked or not.... When I bought my charger kit 3 years ago me and Smegal swapped everything incimmobiliser chips and immobiliser ECU's so his immob deff worked after.

Ive never tried mine without the chip in the key

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Posted 25th Apr 2015 at 08:55

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6waysforward

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Post #18

No not all of them are unlocked. Think you can request it when the ecu goes to rich to be programmed.

I put the ecu in mine from the lb ph1 and it locked out. Had to send it to rich to be unlocked.

Mine runs without the chip as i have a spare key with no chip in that works. Hence why i have an aftermarket alarm and immob.

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Posted 25th Apr 2015 at 15:29

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