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new ecu STILL NO START?


yeti
Nope still sticky fingers


Galant VR-4 org Post #: 1006947 posted 07/22/11 03:26 PM     Remind Me!  Send Private Message   Edit Post      
SO i got my new ecu in the mail today popped out my ecm chip and into the other one i plugged the new ecu in and as soon as i turn the key i hear clicking of the relays going apeshit.

still no start now im confused im going to hook up my laptop to see if it will allow me to connect on dsmlink, if i cant connect to the ecu does that mean the ecu is fried?
(this ecu looks alot better than the one i just had)



~turbohair~

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Diego
Mad Hatter Suite Touche Debackle Guage filled by Justin
1309/2000


Galant VR-4 org Post #: 1006951 posted 07/22/11 03:35 PM     Remind Me!  Send Private Message   Edit Post      
Did you remember to ground the ecu to the frame before starting?

Pics please.



"I love blackjack. But I'm not addicted to gambling. I'm addicted to sitting in a semi circle."

91 nile black vr4, 1309/2000

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yeti
Nope still sticky fingers


Galant VR-4 org Post #: 1006956 posted 07/22/11 03:43 PM     Remind Me!  Send Private Message   Edit Post      
hmm my ecu has never been grounded but il try adding one to the many places..

theres no corrosion or anything on this ecu that leads me to believe is coroded, il get pics up asap



~turbohair~

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yeti
Nope still sticky fingers


Galant VR-4 org Post #: 1006959 posted 07/22/11 03:59 PM     Remind Me!  Send Private Message   Edit Post      
also it cranks like its trying to start but just wont fire.....

starting to think an ignition problem?

thought the relays clicking like crazy leads me to believe its electrical



~turbohair~

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grocery_getter
Senior Crab
836/2000


Galant VR-4 org Post #: 1006964 posted 07/22/11 04:23 PM     Remind Me!  Send Private Message   Edit Post      
Did you check the new ecu board for bad caps?



Andre
836/2000
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yeti
Nope still sticky fingers


Galant VR-4 org Post #: 1006976 posted 07/22/11 05:22 PM     Remind Me!  Send Private Message   Edit Post      
yes the caps on the news board were very fresh no signs of leakage or anything.

the whole board is very clean, im suprised this did not fix my problem

so far ive.

killed battery trying to start
connected ecu with a ground
tested iac and it was bad so replaced with new one.

not sure of where to go from here

il try to start in in about an hour when my battery is charged



~turbohair~

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Barnes
Firechicken
908/1000
237/2000


Galant VR-4 org Post #: 1006978 posted 07/22/11 05:39 PM     Remind Me!  Send Private Message   Edit Post      
Check your battery ground. I had this exact same issue when I had only minor corrosion on my battery ground post. Bad grounds can do weird things.



-Jon Barnes
#580/2000 (Long Gone)
#908/1000 Black (Sold)
#237/2000 White

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yeti
Nope still sticky fingers


Galant VR-4 org Post #: 1006980 posted 07/22/11 05:50 PM     Remind Me!  Send Private Message   Edit Post      
will do that RIGHT NOW



~turbohair~

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yeti
Nope still sticky fingers


Galant VR-4 org Post #: 1006992 posted 07/22/11 07:04 PM     Remind Me!  Send Private Message   Edit Post      
battery posts are shiny clean and i just got battery back from kragen..

this is pissing me off, it cranks all day long but wont fire



~turbohair~

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yeti
Nope still sticky fingers


Galant VR-4 org Post #: 1006995 posted 07/22/11 07:25 PM     Remind Me!  Send Private Message   Edit Post      
tested the ect sensor voltage and resistance test i get 0 -.01 volts with the key on the on possition and i get 1900 ohms with the car cold and the key in the on posistion...


i dont know if i cant get a good reading out of the sensor i tried a dozen times and continue to get 0 volts i tried diffrent ground points and switched back aND FORth between the two prongs



~turbohair~

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yeti
Nope still sticky fingers


Galant VR-4 org Post #: 1006996 posted 07/22/11 08:03 PM     Remind Me!  Send Private Message   Edit Post      
just tested resistance at each injector and got 41 ohms for every one also checked all the wires and there good.

im getting fuel pressure to the rail.

i just did a compression test the other day and was getting compression in each cylinder.

im so confused right now i dont know what to do.



~turbohair~

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yeti
Nope still sticky fingers


Galant VR-4 org Post #: 1006999 posted 07/22/11 08:39 PM     Remind Me!  Send Private Message   Edit Post      
im getting power to the ecu
12v and ground.



~turbohair~

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mitsu90
Should've seen it coming.
1544/2000


Galant VR-4 org Post #: 1007000 posted 07/22/11 08:48 PM     Remind Me!  Send Private Message   Edit Post      
Might be a stupid suggestion but have you checked the mpi relay and fuse?



1544/2000 Nile Black.

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DR1665
Kill him in the face with Wilson Phillips


Galant VR-4 org Post #: 1007001 posted 07/22/11 08:51 PM     Remind Me!  Send Private Message   Edit Post      
ECU does not have to be physically bolted to the unibody to work. Mine's been sitting on the floor since I got the car. No worries there.

Next, double check your plug wires. Seriously. I spent a WEEK ohming out the harness between the coil, transducer, continuum transfunctioner, and ECU, swapping ECUs left and right, only to find I had two plug wires swapped. EPIC FAIL TIME and it can happen to the best of us.

Also make a point of inspecting the wire harness down by the ECU. You never know. The previous owner might have spliced together strands of Christmas lights with butt connectors up under the dash and your hulking the ECU out might have pulled a ground loose.

Your symptoms are indicative of the ECU not being connected. Forget everything you've tried thus far. Start over with the simplest, most basic things you can do.

Good luck, turbohair.



Brian | 98 Pajero | Gearbox Magazine

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yeti
Nope still sticky fingers


Galant VR-4 org Post #: 1007003 posted 07/22/11 09:14 PM     Remind Me!  Send Private Message   Edit Post      
bout ready to blow up.....

so my check engine light does not turn off while in the on position

are you suggesting i go threw each wiring harness wire, cause i dont know why it would all the sudden start ACTING UP LIKE THIS.

so does the ect not reading any voltage doesent mean anything

but i agree with you dr1665 symptoms are like the ecu isnt even connected so where do i start the ecu is getting power i tested pin 101,102,106,107
which are ground and 12v sources.....

could my diagnostic port be blown (but that doesent explain why it doesent start)

should i go buy/return an obd1 sensor real quik and pull that code?



~turbohair~

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fuel
"Just to be pedantic!"


Galant VR-4 org Post #: 1007006 posted 07/22/11 09:16 PM     Remind Me!  Send Private Message   Edit Post      
all you need to pull codes is an LED or a low power piezo buzzer, even an analog voltmeter.

The check engine light will not light up if the ECU is not getting power.



'91 E39A Galant VR-4 Evolution | '80 A164A Eterna GSR Turbo

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SouthCaliVR4
Gas Analyzer
825/2000


Galant VR-4 org Post #: 1007032 posted 07/22/11 11:33 PM     Remind Me!  Send Private Message   Edit Post      
So you did have an ecu in there before right? Pop it back in & see if the car fires up or potentialy waste hours chasing a problem that isn't there.



How do you make a small fortune racing? Start with a very large one!!!

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Justin_Cosgrove
Unregistered


Galant VR-4 org Post #: 1007037 posted 07/22/11 11:45 PM     Remind Me!  Send Private Message   Edit Post      
Maybe a dumb question but have you checked for spark, and do the plugs have the smell of fuel?

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oreo
Unregistered


Galant VR-4 org Post #: 1007051 posted 07/23/11 01:05 AM     Remind Me!  Send Private Message   Edit Post      
Yeah check your coils and wires and u might wanna put a fresh set of spark plugs on it

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yeti
Nope still sticky fingers


Galant VR-4 org Post #: 1007058 posted 07/23/11 02:56 AM     Remind Me!  Send Private Message   Edit Post      
I do have another ecu but I bought this one to fix this problem. I'm going to try that tommarow though, the funny thing is when I put the new ecu in there went to go fire the car up the relays went apeshit , and the car did fired start but then 1 click and the car was dead hasn't started since.
I'm thinking that was the bad iac frying the new ecu....

And I have spark on all cylinders and no my plugs don't smell like gas



~turbohair~

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yeti
Nope still sticky fingers


Galant VR-4 org Post #: 1007061 posted 07/23/11 03:03 AM     Remind Me!  Send Private Message   Edit Post      
Quoting DR1665:


Next, double check your plug wires. Seriously. I spent a WEEK ohming out the harness between the coil, transducer, continuum transfunctioner, and ECU, swapping ECUs left and right, only to find I had two plug wires swapped. EPIC FAIL TIME
Good luck, turbohair.




Is there really a continuum transfunctioner?



~turbohair~

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Justin_Cosgrove
Unregistered


Galant VR-4 org Post #: 1007063 posted 07/23/11 05:09 AM     Remind Me!  Send Private Message   Edit Post      
Quote:

And I have spark on all cylinders and no my plugs don't smell like gas


That might mean that no fuel is making it into the combustion chamber, if you've been winding it over like you say you have. You generaly need three things for a motor to run, spark, fuel and compresion. If a motor isn't running it will be one of the three.

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DR1665
Kill him in the face with Wilson Phillips


Galant VR-4 org Post #: 1007098 posted 07/23/11 12:43 PM     Remind Me!  Send Private Message   Edit Post      
Waitaminute. Justin brings up a good point. Fuel, compression, spark.

You have another thread talking about first engine rebuild where you get into headgaskets, oil pumps, and that sort of thing. Has this engine recently been apart? Have you messed with the timing belt?

Timing has to be f u c k i n g p e r f e c t or you crank all day and not make compression. If you've recently had the timing belt off, you need to make triple sure your plug wires are connected in the right order, and then verify your timing marks line up.

Aaaand there's a chance we're back to the fuel pump relay, considering the plugs come up dry. You sure you're not out of gas, turbohair?



Brian | 98 Pajero | Gearbox Magazine

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AnotherNewb
flutterdumper


Galant VR-4 org Post #: 1007099 posted 07/23/11 12:53 PM     Remind Me!  Send Private Message   Edit Post      
Just out of curiosity, were the isc drivers in the last ecu blown? If so when you put the new one on did you make sure coolant wasn't leaking into he isc portion of the lower tb? Definitely double check your plug wires for the correct order. You can pull you cas off and spin it by hand to verify the injectors are fireing without the noise of the engine cranking. Also verify you havethe correct fuel pressure. Just because there is fuel in the rail doesn't mean there is enough pressure.



Every terrorist killed is a victory for Wookalar

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grocery_getter
Senior Crab
836/2000


Galant VR-4 org Post #: 1007110 posted 07/23/11 02:48 PM     Remind Me!  Send Private Message   Edit Post   
Your new ecu is BAD. This is what you say a few post above "so my check engine light does not turn off while in the on position" The CEL turning on and off when you first put the key in the ON position signify the ecu starting the booting up process and finish the booting up process. Your new ecu started the booting up process BUT never finish the booting up process. It is BAD. If the caps are still the original caps they are most likely bad right now regardless of what they look like. Get the caps changed and hopefully the ecu can be tested to make sure it boots up properly.



Andre
836/2000
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