Ive got a 92 cabriolet im swapped in a 1Z, I Believe its out of a 97 passat. Ive checked the wiring multiple times, everything seems to be in place. I give it fuel out of a jug or thru stock fuel pump and regulator( for now) which is giving it to much pressure but it still wont start. It will smoke, if i crack injectors it sprays fuel. it will run on brake cleaner. ive checked the timing multiple times. has compression. Is it possible for it to be out of time enough to not start even with it pinned correctly. From what I understand if the pump has 12V and fuel it should at least run just maybe not great. Any Ideas would be appreciated, im getting pretty frustrated
1z Swap Wont Start
- Thread starter RandyS
- Start date
oilhammer
Certified Volkswagen Nut & Vendor
How long was the engine sitting? The injectors and pumps don't like sitting, especially with no fuel in them. You may simply have some sort of injection problem.
I assume the OBD was all swapped over, too... anything there? Does the ECU see cranking RPM?
I assume the OBD was all swapped over, too... anything there? Does the ECU see cranking RPM?
Got the engine last July. Its suppose to be a freshly rebuilt engine and injection pump with deleted and tuned ECU. everything looks clean and new. Cheap scanner shows RPM. Has P1441, P1617, P0380, P1562, P0121, P1144. Its kind of just pieced together right now because it wont start and my understanding is as long as the pump solenoid has 12V and Fuel it should at least start on its own, Is that correct?
oilhammer
Certified Volkswagen Nut & Vendor
Well you need a proper scan tool... .because EVAP system faults don't apply here, LOL...
But the 1562 is the pump's innards, that could certainly cause a no-start.
But the 1562 is the pump's innards, that could certainly cause a no-start.
Steve Addy
Top Post Dawg
Were you able to successfully prime the IP? Use a clear tube into the jug and try to draw fuel through the IP (with a filter) by using vacuum on the fuel return line (from the IP), if the pump will not prime then the it sat too long and the pump will need to be resealed...which will introduce other problems but that's typically what happens with these.
Need more info though, did you replace timing belt / tensioner before you tried starting this?
Get all of your electrical connections work done, that's undoubtedly why you're having trouble.
Steve
Need more info though, did you replace timing belt / tensioner before you tried starting this?
No....it's not like an old diesel where all you needed was pump solenoid 12v and it would run, the TDI will need to have the IP connections and the crank sensor connected...and the ECU will need to be powered too. Everything at the round engine connector will need to be functioning plus other things like the crank sensor etc.RandyS said:
Get all of your electrical connections work done, that's undoubtedly why you're having trouble.
Steve
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im confident the IP is primed, if I crack the injectors it sprays fuel everywhere. I've tried with just a gravity fed jug and hose and with a regulator on the stock gas fuel pump. turned all the way down it still has 30psi. pump is primed. ive checked the timing 3 times. pin is lined up, keyway towards 1 injection line, cam and crank are on marks. will it show timing with just cranking? can it be far enough out of time even with it pinned to not run? I have a friend with Vagcom i can get to come hook to it, just dont know what parameters I need to look at. With the wiring, as far as i can tell, besides the throttle code everything seems to be hooked up and working. its a rats nest right now just because i dont seen a reason to clean it up until I know its running.
Steve Addy
Top Post Dawg
You're getting fault codes so clearly something isn't right....or several things.
When I did the AHU conversion on my B3V I prepared the harness so that when it was installed I was done with that portion of the project, so that I wouldn't have to revisit it again. The rats nest isn't helping your situation at all.
Does the 1992 Cabriolet have CE2 electrics?
Steve
When I did the AHU conversion on my B3V I prepared the harness so that when it was installed I was done with that portion of the project, so that I wouldn't have to revisit it again. The rats nest isn't helping your situation at all.
Does the 1992 Cabriolet have CE2 electrics?
Steve
CasaEd
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That fault code P1562 N146 upper limit reached is the code that stopped my 1z from starting after I converted the ECU to the 121pin two plug version. For me I had forgotten 1 of the 12v feeds from the engine control relay to the injection pump plug. Pins 5 & 3 are fed by the engine control relay and I only had 12v on one of them( don't remember which one now). I'm using the later pump with the 10 pin plug, but it should not make a difference as the 12v feeds should be in the same postions in the 8 pin plug. Once I had that 12v feed that code went away and I could hear the pump click when the ignition was turned on.
Steve Addy
Top Post Dawg
CE2 electric is the system VW used on most cars 1988 up to end of Mk3 generation in 1999 (and IIRC Mk3 / Mk3.5 Cabrio to 2002). It stands for Central Electric 2 and follows the CE1 system that came before for some cars. US built Mk2 cars had their own electrical system that was somewhat different, German cars came with CE1 electrics and all Mexican production (after 1988 for US import) was CE2.
I'm not sure how you're going to integrate the engine controls into your existing car if you don't have some knowledge of CE2 and / or how to build your harness to work properly with your Cabriolet.
Steve
Steve Addy
Top Post Dawg
They're German built and based on the Mk1 which was not CE2 at inception, but I'm not familiar with what they did in the last few years of the Cabriolet to be definitive about it.
There was no Mk2 Cabriolet.
Steve
Steve Addy
Top Post Dawg
There was no Mk2 Cabriolet. They were Mk1 platform from beginning until end in 1992, all German built, and they were CE1 electrics until the end of production.
The Mk3 Cabrio didn't arrive (in the US) until 1995. Whether anyone got it before I cannot say but probably Europe did.
The CE1 electrical system will be a problem for the TDI unless he converts the car to CE2 or builds a separate custom harness to accomplish the injection control. If he pics the latter he'll have to have a tune to eliminate the bits he doesn't want.
Steve