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3sgte engine in car. now wont start! - 6G Celicas Forums

Topic #43692 59 posts Started by toyotacrazy
toyotacrazy
#31
Ok, I think I got this figured out. Here it goes....
I believe the ecm was just thrown with the swap later and the original ecu was left with the car or something. Because I have a 89661-2B280 ecm. Ive been wiring the car for a 1991 celica all trac. All the connectors and wires for the 1991 match up. Even the ones that I didnt repin for the distributor ect. were correctly corrosponding with the 1991 ewd. So I found an ecm part# 89661-20751. In my little theory I should be able to buy this ecm and plug it right in and be ok. biggrin.gif Does this sound right to you? Thanks.

Thanks to lagos:

JDM 185 ecu's-
89661-20750=89/10-90/03(superceeded to 20751)
89661-20751=90/03-91/08
89661-2b310=91/08-92/02
89661-2b280=91/08-93/09

Dr_Tweak
#32
Yeap, that's exactly right. I've had the same thing happen to me before, that's how I knew after reading the thread over, reading what you did, and then seeing the mysterious code 12 it rang a bell right away.

20751 is the one you want, yes. By the way, the 89661-17321 will also work for you, that's the MR2 version which works just fine.

In my case, I just repinned the connectors and used the ECU that they sent me, it only took a few hours.

-Doc

This post has been edited by Dr_Tweak: Dec 27, 2006 - 9:33 PM
-Dr Tweak, 6GC's resident engine swap wiring expert extraordinaireClick here to see my swapsdrtweak@phoenixtuning.com
toyotacrazy
#33
Thats awsome. I cant believe the same thing happened to you. CRAZY! I think Im going to buy the other ecm and sell the one I have. I just am overwhelmed at this point and want my celica back! I also dont have much spare time and its now cold in the garage. Thank you very much! biggrin.gif
Dr_Tweak
#34
It seems that every swap I do, I run into some new problem that I've never seen before. But every time that I figure it out, I'm better equipped for the next swap. I figure maybe someday I'll have all the answers to all the problems smile.gif

I'm glad I could help. Let me know if you need anything else.

-Doc
-Dr Tweak, 6GC's resident engine swap wiring expert extraordinaireClick here to see my swapsdrtweak@phoenixtuning.com
phattyduck
#35
>
QUOTE(Dr_Tweak @ Dec 27, 2006 - 7:24 PM) [snapback]513548[/snapback]
>I figure maybe someday I'll have all the answers to all the problems smile.gif

laugh.gif laugh.gif laugh.gif

biggrin.gif

-Charlie
2003 Subaru WRX Wagon1989 Camry Alltrac LE 3S-GTE - SV25/ST205 hybrid1988 Camry Alltrac LE - BEAMS swap started
toyotacrazy
#36
It runs!!!!!!!!!!!!!!!!!! biggrin.gif woot.gif

I got it up and running. The correct ecu did the trick! Just working out the bugs now.....It idles high until I pinch off the large hose on the drivers side of the intake manifold. Then it goes down to normal idle. I think that hose goes to the wastegate. I gotta get a better look at it. At least it runs. Thanks all!!!!!!!!!!! biggrin.gif
Kadett
#37
Congrats smile.gif
JDM Powerplant installed, BPU coming very soon!
Dr_Tweak
#38
Excellent, I'm glad that we figured out your problem! Take a pic of that vacuum line and we should be able to tell you where it goes. smile.gif

-Doc
-Dr Tweak, 6GC's resident engine swap wiring expert extraordinaireClick here to see my swapsdrtweak@phoenixtuning.com
toyotacrazy
#39
Ill get the pic on later. I posted another page with my boost issue. Im only boosting to 6-7 psi. If I pinch off the vac hose going to the turbo it boosts until fuel cut. ~14 psi. Is that normal?
Dr_Tweak
#40
Yeah it will do that if you pinch the line off. You should have two lines going to the wastegate actuator, one of them goes to the turbo and the other goes to a VSV (vacuum switching valve) under the intake manifold. Do you have that set up right?

-Doc
-Dr Tweak, 6GC's resident engine swap wiring expert extraordinaireClick here to see my swapsdrtweak@phoenixtuning.com
toyotacrazy
#41
Yea thats correct. I have a vacuum tube from the turbo to the wastegate, from the wastegate to the large vsv and onward. I looked over the hoses and sprayed carb cleaner on most while at idle. No change in RPM. The most boost Im getting is 5-7 psi. When I pinched off the vacuum hose to the turbo, I got full 14 psi boost to fuel cut. I did this just to make sure I didnt have a problem with the turbo itself. Ive gotta get to the diagrams at work so I can see if everything is hooked up ok. Im thinking I have a problem with a vsv or the wastegate itself. Im working on some links for the pictures of the vacuum tubes. Thanks guys.

This post has been edited by toyotacrazy: Dec 30, 2006 - 9:40 PM
Dr_Tweak
#42
Any codes from the ECU?

-Doc
-Dr Tweak, 6GC's resident engine swap wiring expert extraordinaireClick here to see my swapsdrtweak@phoenixtuning.com
toyotacrazy
#43
The only code I have is 34 which is because I hit fuel cut testing the turbo.
Dr_Tweak
#44
Where do you have the other vacuum line from the VSV going to?

-Doc
-Dr Tweak, 6GC's resident engine swap wiring expert extraordinaireClick here to see my swapsdrtweak@phoenixtuning.com
toyotacrazy
#45
Its all stock setup. I really didnt mess with it. Ill go look and get right back.
toyotacrazy
#46
The vacuum hose goes from the turbo, to the vsv, then from the vsv to this metal pipe that connects to the intake/snorkle tube and to the Idle air control. This metal tube is also where I had a questionable hose that I plugged off so the car would idle. I need to find a diagram. Hope this makes sense.
by the way I dont know how to put these pics on the net, other than using myspace. later
lagos
#47
>
QUOTE
>The vacuum hose goes from the turbo, to the vsv, then from the vsv to this metal pipe that connects to the intake/snorkle tube and to the Idle air control.


it sounds like you have this all wrong.

from the turbo, go right to the waste gate actuator.
from the waste gate actuator, go to the metal pipe that leads to the tvsv.
thats it.

the hose for your idle should go right to your intake. between the turbos' inlet, and the AFM.


you can upload pics to photobucket. then link to them on here.

This post has been edited by lagos: Dec 30, 2006 - 10:58 PM
15PSI - 30MPG - Megasquirt Tuned
toyotacrazy
#48
Yea, your right. Sorry its been a long day. It goes from the turbo, to the wastegate, to the vsv, then to the metal pipe. My fault. Couldn't I just get a manual boost controller and eleminate the vsv? I would like to figure out whats wrong though. Its probably the way these hoses are routed. All I want is stock boost 10-12
Dr_Tweak
#49
Yeah, put the MBC between the turbo and the wastegate actuator and plug the other line.

-Doc
-Dr Tweak, 6GC's resident engine swap wiring expert extraordinaireClick here to see my swapsdrtweak@phoenixtuning.com
lagos
#50
what kind of exhaust do you have on the car? if its free flowing or an open downpipe, then your probably just seeing a lot of boost creep.

i have a 3in exhaust. i can set it to 10psi and keep it there. but once i got over 4K, i will always creep to at least 14psi.
15PSI - 30MPG - Megasquirt Tuned
toyotacrazy
#52
Its a stock exhaust setup. With a convertor below the turbo and a convertor after the flex pipe.
lagos
#53
IPB Image

the top vac line normally goes to your charcole canister. most people ditch theirs, so you can just cap that.
the bottom hose, you should disconnect and cap both ends. they normally connect to a round metal valve that is used for the AC idle up system. you can also use the end on the intake manifold for a boost gauge or bov vac line.

This post has been edited by lagos: Dec 30, 2006 - 11:20 PM
15PSI - 30MPG - Megasquirt Tuned
toyotacrazy
#55
Yea I capped the small vac hose on the top. I also capped both the other fittings. It runs strong just only 6-7 psi of boost.
toyotacrazy
#56
Ok heres my best guess to why my car wont boost past 7 psi. I noticed the coolant is flowing freely all the time through the radiator. Also my car is running cool by the temp gauge. I think my t-stat is either stuck open or someone took it out completely. IF the ecm has a "safe mode" it may only allow partial boost until the engine reaches normal operating temperature. I dont know for sure. But this is my best guess since the wastegate and related parts seem to work ok.
My second guess is that maybe I have a vacuum leak while under boost. You'd think that the car would idle high or run rough or something. It runs fine.
I'll throw a t-stat in it on Tuesday and let you all know if anything happens. Later

-toyotacrazy
CelicaGT04
#57
>
QUOTE(toyotacrazy @ Dec 30, 2006 - 12:41 PM) [snapback]514052[/snapback]
>
It runs!!!!!!!!!!!!!!!!!! biggrin.gif woot.gif

I got it up and running. The correct ecu did the trick! Just working out the bugs now.....It idles high until I pinch off the large hose on the drivers side of the intake manifold. Then it goes down to normal idle. I think that hose goes to the wastegate. I gotta get a better look at it. At least it runs. Thanks all!!!!!!!!!!! biggrin.gif


So the ECU work out good for you im hoping? wink.gif

Good luck man, i hope to see some numbers from your car soon! smile.gif

Let me know if you need any other parts.
Dr_Tweak
#58
The ECU isn't in safe mode. If it was you'd be getting some codes. Your problem has something to do with the vacuum setup... for simplicity, install the MBC and be done with it. smile.gif

-Doc
-Dr Tweak, 6GC's resident engine swap wiring expert extraordinaireClick here to see my swapsdrtweak@phoenixtuning.com
toyotacrazy
#59
Thank you for all the help. Yea...Ill just get a mbc. When I pinched off that vac hose and got full boost. WOW! I cant wait to see that boost all the time. Ill let you guys know when its all working correctly. Thanks again doc. later all.
-toyotacrazy biggrin.gif
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