3rd gen swap wont start Options

[RUNNIN-LOW]

starter wont crank...just clicks from the inside.(of car).there seems as if there is no power going to the starter..wierd thing is that the radiator fan stays spinning.rechecked all wiring harness plugs and ground..starter wont crank over..checked starter today and it is working fine. please can anyone help with this problem....wiring harness was made by dr.tweak so i trust that it is fine..ooh yeah i did and have checked all the fuses like 30 times already even have one of my buddys do it like 10 times..everything is right...

This post has been edited by RUNNIN-LOW: Jun 8, 2007 - 11:26 PM

[OOBE]

Check the crank position sensor. On my Supra, the harness was dry-rotted and I accidentaly hit it with a wrench and one of the cables disconnected but it was still inside, so it looked fine. You could only hear a click when trying to start it.

[eggman40]

Make sure all your grounds are good and are connected to a good piece of metal, without paint. I had the same issue with my swap and i think it was lagos who said check the grounds. I ended up finding one wire i didnt bolt to the tranny... and sure enough the engine turned over right away after i connected the wire. Good Luck!

This post has been edited by eggman40: Jun 9, 2007 - 5:07 AM

[toyotacrazy]

starter wont crank...just clicks from the inside.(of car).there seems as if there is no power going to the starter..wierd thing is that the radiator fan stays spinning.rechecked all wiring harness plugs and ground..starter wont crank over..checked starter today and it is working fine. please can anyone help with this problem....wiring harness was made by dr.tweak so i trust that it is fine..ooh yeah i did and have checked all the fuses like 30 times already even have one of my buddys do it like 10 times..everything is right...

Will the engine turn over by hand?

[RUNNIN-LOW]

yes the enigine will turn over by hand..try that today..yeah the ground are all good..something is just not kickin the start to spin..im so lost..going to take it to the shop tomorrow and have them take a look at it

[phattyduck]

Have you tried a different battery? The click is often a sign of a low battery...

Put a volt/multi-meter on the battery while you try cranking and see if the voltage drops a ton (and make sure it is over 12.5V with no load).

-Charlie

[toyotacrazy]

Have you tried a different battery? The click is often a sign of a low battery...

Put a volt/multi-meter on the battery while you try cranking and see if the voltage drops a ton (and make sure it is over 12.5V with no load).

-Charlie

Does it click once or multiple times when you turn the key? If its once keep hitting it, Thats bad starter contacts. If its multiple times, its probably a bad battery. keep us updated

[DSToyo]

Have you tried a different battery? The click is often a sign of a low battery...

x2, if it rapidly clicks, you might want to charge your battery first.

[RUNNIN-LOW]

kk today i figure out or i think i did..good points first i have spark..i can crank the motor manually..i have fuel pressure.nothing is leaking either..BUT!! the motor wont start..there has to be some power problems with the start module to the ignition..not sure what it is..grounds are connected right and tight..battery is brand new..ooh and it only click once.when i start or turn the ingintion.pictures are going to be posted up tomorrow of the clips and other stuff i think shouldnt be connected..have loose plugs that have no connection to it...

[toyotacrazy]

kk today i figure out or i think i did..good points first i have spark..i can crank the motor manually..i have fuel pressure.nothing is leaking either..BUT!! the motor wont start..there has to be some power problems with the start module to the ignition..not sure what it is..grounds are connected right and tight..battery is brand new..ooh and it only click once.when i start or turn the ingintion.pictures are going to be posted up tomorrow of the clips and other stuff i think shouldnt be connected..have loose plugs that have no connection to it...

keep turning the ignition multiple times. Its probably your starter contacts. It should crank eventually unless you have an electrical issue

[scothaniel]

I had the single click when I had a bad ground (the connection on the trans was too loose).

When you say you can crank the motor manually, do you mean by jumping power to the starter directly?

Is the circuit opening relay (next to the ECU) engaging when you try to start it from the ignition switch?

This post has been edited by scothaniel: Jun 12, 2007 - 11:45 PM

[RUNNIN-LOW]

i didnt check that yet the circuit opening relay..ill check that tomorrow.. but yeah im putting power directlly to the starter..have have spark and i know for sure the injectors are shooting fuel...ooh the wiring harness was made by dr.tweak so yeah im sure it is right..

[toyotacrazy]

I had the single click when I had a bad ground (the connection on the trans was too loose).

When you say you can crank the motor manually, do you mean by jumping power to the starter directly?

Is the circuit opening relay (next to the ECU) engaging when you try to start it from the ignition switch?

By crank manually I mean put a wrench on the crank pulley and make sure the engine will spin over.

[RUNNIN-LOW]

kk got pictures but havent loaded them up yet..but yeah i can spin the engine..kk there is a problem now i have spark i have fuel pressure but my injectors arent spittiing..i have no power going to the injectors..something wierd is going on with my harness. dr tweak did it too so im sure it should be fine..i think there is a wiring problem that is not kickin it runs from my ingition to my starter to kick the injectors to fire up..anyone have anyclue how i can fixs this...

[scothaniel]

Do you have the injector resistor pack in? Do you have power at the resistor pack when the key is at IGN2?

I'm not familiar with Dr. Tweaks modifications to the harness, but the stock system on the 3rd gen 3S motors goes like this:
Power goes from the AM2 fuse, through the ignition switch (position #2) to the resistor pack (aka efi resistor) and on to the injectors. The ECU always supplies the ground to the fire the injectors.

This post has been edited by scothaniel: Jun 18, 2007 - 12:42 AM

[toyotacrazy]

Do you have the injector resistor pack in? Do you have power at the resistor pack when the key is at IGN2?

I'm not familiar with Dr. Tweaks modifications to the harness, but the stock system on the 3rd gen 3S motors goes like this:
Power goes from the AM2 fuse, through the ignition switch (position #2) to the resistor pack (aka efi resistor) and on to the injectors. The ECU always supplies the ground to the fire the injectors.

Unplug the 2 wire coil, injectior resistor, and the igniter. turn the ignition on and check to make sure you have 12 volts to all the above wires. This is assuming the 3rd generation is the same setup as 2nd generation.

[RUNNIN-LOW]

These are the plugs that has no other plugs to plug it in...








The one in the middle is my SUPERMODEL!!

[scothaniel]

Ok, it looks like you have some 3rd gen connectors and 2nd gen parts.

The first plug is the starter trigger wire - it goes just above the big wire on the starter. Looks like you have a 3rd gen plug and a 2nd gen starter.

The 4th pic is of the injector resistor pack connector (with all the black/orange wires), which explains why you dont have power at the injectors. I think the 7th pic is the resistor pack itself - I'll have to check my swaps to verify. You need to connect these two - or get the right injector pack to match the harness.

I think the 6th pic is the connector which goes to a noise reducer for the coil.

This post has been edited by scothaniel: Jun 21, 2007 - 2:17 PM

[toyotacrazy]

Ok, it looks like you have some 3rd gen connectors and 2nd gen parts.

The first plug is the starter trigger wire - it goes just above the big wire on the starter. Looks like you have a 3rd gen plug and a 2nd gen starter.

The 4th pic is of the injector resistor pack connector (with all the black/orange wires), which explains why you dont have power at the injectors. I think the 6th pic is the resistor pack itself - I'll have to check my swaps to verify. You need to connect these two - or get the right injector pack to match the harness.

I think the 5th pic is the connector which goes to a noise reducer for the coil.

The last pic. (other than the chicks ) Is the cruise control connector. I think you are correct on the others just by the colors and number of wires. Let us know what happens when its all hooked up correctly

[RUNNIN-LOW]

k well humm.. where do i get the (4th pic)injector resistor pack from would a thrid gen mr2 pack work??..and also do i even need the(5th pic) noise reducer coil to be plugged in anywas..ooh yeah i know where the starter plug goes but that was just to show yah my problem..i might just take my old start and rebuild it.anyone have aclue about the third picture.

[scothaniel]

Let me check my old harnesses tomorrow - I may the proper clips to go with your parts. You'd just need to cut and solder.

[toyotacrazy]

k well humm.. where do i get the (4th pic)injector resistor pack from would a thrid gen mr2 pack work??..and also do i even need the(5th pic) noise reducer coil to be plugged in anywas..ooh yeah i know where the starter plug goes but that was just to show yah my problem..i might just take my old start and rebuild it.anyone have aclue about the third picture.

yea mr2 of the same generation would work. The third pic looks like a map sensor or cam position sensor. Look at the color of the wires and look in the wiring diagram. That may help. Also you can look at connectors in the ewd. I cant say for sure b/c my swap is a gen 2

[phattyduck]

k well humm.. where do i get the (4th pic)injector resistor pack from would a thrid gen mr2 pack work??..and also do i even need the(5th pic) noise reducer coil to be plugged in anywas..ooh yeah i know where the starter plug goes but that was just to show yah my problem..i might just take my old start and rebuild it.anyone have aclue about the third picture.

I'd help, but the pics aren't showing for me. I have a 3rd gen swap and I did the harness myself and should be able to figure it out if I can see the pics...

-Charlie

[scothaniel]

I'm not sure what that 3rd pic is. It looks like it has 2 wires, so its not the map or distributer connectors, nor is it the TPS or Idle control. Wire colors would be helpful.

No luck on the connectors on my spare harnesses, sorry.

Good luck finding a 3rd gen MR2 or ST205 injector resistor pack. You may just want to buy a couple of generic connectors connectors and use the resistor pack you have. The only difference between a 3rd gen and 2nd gen resistor packs are connectors.

[RUNNIN-LOW]

well if anyone can could they take pictures of there resistor pack and show me and also there noise reducer coil..or just take closes pictures of the of the things i need..please i need this thng runnin..soon well yeah if anyone could it would be helpfull..

[eggman40]

Ill have a pic up tomorow

[WannabeGT4]

pic 2 looks kinda like it may be for the pressure switch on your AC line.

pics 3,4 are almost certainly for the injector resistor pack.

pic 6 may be for the fuel pump resistor but that's just a shot in the dark.

There is a 3rd gen resistor pack for sale here:
http://www.6gc.net/forums/index.php?showtopic=43182

[scothaniel]

Pic 6 is definitely a 2nd gen injector resistor pack, I have the same one on my ST185. Pics 3 and 4 are of the 3rd gen plug going to the resistor pack (which I have on my 6th gen). The fuel pump resistor pack only has 2 wires.

Like I said before, he has an injector resistor pack, it just has the wrong connector for the harness. Some cutting and crimping (or soldering) would have him up and running in an hour.

BTW - I found a spare 2nd gen starter plug last night. It came with a bosch starter I bought a few weeks ago. So if your thinking about rebuilding your starter anyways, just go and buy the bosch, and you'll get the plug you need with it! Or I can send you the spare I have, you'll need to cut off the plug on your harness and solder this one in. just pay for shipping (from Michigan) and its yours.

[WannabeGT4]

Pic 6 is definitely a 2nd gen injector resistor pack, I have the same one on my ST185. Pics 3 and 4 are of the 3rd gen plug going to the resistor pack (which I have on my 6th gen). The fuel pump resistor pack only has 2 wires.

Like I said before, he has an injector resistor pack, it just has the wrong connector for the harness. Some cutting and crimping (or soldering) would have him up and running in an hour.

This is pic six and I see a total of 0 resistor packs, 1 coil, and 1 igniter. Check your facts again before you answer so absolutely. The pic I posted in my first reply has the 3rd gen injector and fuel pump resistors if you need clarification.

[scothaniel]

Sorry man, I miscounted. I was looking at pic 7 when I said that, not pic 6. Your absolutely correct.

And toyotacrazy was right, pic 7 is the cruise control plug - I thought it was the 2nd gen injector resistor like whats in the middle of this pic:



So I was way off - he'll need the resistor pack you posted earlier.

I still say pic 6 is the noise suppressor plug (black / orange and white/black wires) This is the same part thats on the 7A and 5S motors too, sits right next to the ignitor.

This post has been edited by scothaniel: Jun 21, 2007 - 2:44 PM

[WannabeGT4]

6 may very well be for a noise supressor but I don't have one on my 94 GT 3S swap. I looked for it on my harnesses for quite a while until I decided it must be in the fuse box. I have no idea how it's done on the the 3rd gen 3S though.

[phattyduck]

I still say pic 6 is the noise suppressor plug (black / orange and white/black wires) This is the same part thats on the 7A and 5S motors too, sits right next to the ignitor.

I still can't see the original pics... (probably blocked from work) but this pic might help:



On the ST205, the noise suppressor, ignitor and coil are all on the same bracket on the firewall. The noise suppressor is about 3/4" around - the little white thing in between and just to the right the ignitor and the intercooler overflow tank in the picture above.

Make sure that whole braket is well grounded. I used a special wire from there to the ground connection on the top transmission because I didn't have the stock holes in my firewall.

-Charlie

[RUNNIN-LOW]

thanks everyone for helping me out dame what would i do without yah..cool i got the fuel resistor pack thing cover now i know what i need and how i can rigg it to work..eggman tode me how..but the funny thing is that how come i still cant start my car from my igintion..yeah im so lost..im not sure how dr.tweak did it but yeah it looks right..still going to talk to him tomorrow..about the problem. kk another thing since i was able to start the car manually i some how cant put the beast in first gear..anyone have a clue i know for a fact i did it right..im useing my stock tranny..i have a stage three 5s CM disk and stage three 3s pressure plate..with a stock resurface flywill..anyone have a clue why i still cant put the beast in first.??thanks yah and eggman for the help..!!!

[laff09]

thanks everyone for helping me out dame what would i do without yah..cool i got the fuel resistor pack thing cover now i know what i need and how i can rigg it to work..eggman tode me how..but the funny thing is that how come i still cant start my car from my igintion..yeah im so lost..im not sure how dr.tweak did it but yeah it looks right..still going to talk to him tomorrow..about the problem. kk another thing since i was able to start the car manually i some how cant put the beast in first gear..anyone have a clue i know for a fact i did it right..im useing my stock tranny..i have a stage three 5s CM disk and stage three 3s pressure plate..with a stock resurface flywill..anyone have a clue why i still cant put the beast in first.??thanks yah and eggman for the help..!!!

Can you shift when its off? If you can't then most likely bent shifter cables. Did you get all of the air out when you bled the clutch? GL gettin it goin man

[95WhiteOnWhite]

Doesnt look like any supermodel I ever seen

[shubert_ae102]

its the sylinoid , my corolla did the same thing , the starters are the same , the sylinoids are notorious for problems on thse starters.

[RUNNIN-LOW]

well thanks to all that are tryin to help..thanks much to dr.tweak who went threw the whole harness with me on the phone thanks much..thanks eggman for helpin me out on the resistor pack thingy..but all in all i am lookin for the resistor pack for daily driving..thanks much to everyone again and yeah i love this web sight lots of help!!!ill soon undate on video of my beast running the streets of minnesota thanks all..