ECU question

sevenmgte · 07-12-2008, 07:04 PM

can any one till me if an automatic ECU work on a manual car ?

specialkmj7 · 07-12-2008, 08:09 PM

This was a response to my ? on I-supra at the end its underlined but this should help a lil better than tellin u yes. lol

Posted July 03, 2008 06:08 AM July 03, 2008 06:08 AM Hide Post

quote:
Originally posted by Supra88T_Knight:
I have heard different things about ECU's mostly about turbo's. For an N/A though you shouldnt have to worry about what year, however I would recommend not to go backwards though as with newer models comes newer technologies.

Nope.

86.5-88.5 are the same ECU, using yellow plugs. 89.5-92 are gray plug, and the wiring pins are different.

They are NOT interchangeable.

quote:
You can use a newer ECU however. I Know some models have Some safety additions and then theirs TEMS as well.

So long as the ECU is '90-92, yes. TEMS has nothing to do with the ECU. It has it's own computer...

quote:
I'm not sure if that plays a factor but you should be able to use it regardless. Oh yeah make it sure it also fits your transmission type, thats important too.

It only matters if he's automatic. If he's got a manual, it doesn't matter at all. Manual cars can use automatic ECU's and wiring harnesses, but not the other way around.

supramacist · 07-12-2008, 10:29 PM

NO NO NO.

The automatic ecu is not the same as the manual ecu.

That's why they are clearly marked as to automatic or manual.

sevenmgte · 07-18-2008, 10:58 PM

how can i tell if the ecu is not working? would it still crank?

btwilson86 · 07-19-2008, 06:04 PM

The engine would still crank, but if your ecu didn't work at all the engine should not fire. As for cranking the engine over, there's not computer in that circuit. It's just wires, fuses, switches, and relays.

What's your car doing that makes you suspect the ECU?

sevenmgte · 07-19-2008, 06:33 PM

that's what the tech said, and when i got it home did a diagnose on it my self. the check engine light just flash none stop.

btwilson86 · 07-20-2008, 07:06 AM

So what's the car doing that's abnormal?

sevenmgte · 07-20-2008, 03:39 PM

yea that's not normal. well i found another ecu the #'s almost matches mine check it out mine-89661-14240 17000-1471 his-89661-14280 175000-1511 so i was thinking since his #'s where bigger its a newer model right? so what u gays think bid end soon. i found it on ebay

07-12-2008, 07:04 PM	#1
sevenmgte Intake Join Date: Mar 2006 Location: Oroville Posts: 31	ECU question can any one till me if an automatic ECU work on a manual car ?

07-12-2008, 08:09 PM	#2
specialkmj7 Stock Join Date: Jul 2008 Location: Winter Haven, Fl Posts: 14	This was a response to my ? on I-supra at the end its underlined but this should help a lil better than tellin u yes. lol Posted July 03, 2008 06:08 AM July 03, 2008 06:08 AM Hide Post quote: Originally posted by Supra88T_Knight: I have heard different things about ECU's mostly about turbo's. For an N/A though you shouldnt have to worry about what year, however I would recommend not to go backwards though as with newer models comes newer technologies. Nope. 86.5-88.5 are the same ECU, using yellow plugs. 89.5-92 are gray plug, and the wiring pins are different. They are NOT interchangeable. quote: You can use a newer ECU however. I Know some models have Some safety additions and then theirs TEMS as well. So long as the ECU is '90-92, yes. TEMS has nothing to do with the ECU. It has it's own computer... quote: I'm not sure if that plays a factor but you should be able to use it regardless. Oh yeah make it sure it also fits your transmission type, thats important too. It only matters if he's automatic. If he's got a manual, it doesn't matter at all. Manual cars can use automatic ECU's and wiring harnesses, but not the other way around. __________________ Last edited by specialkmj7; 07-12-2008 at 08:14 PM.

07-19-2008, 06:04 PM	#5
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	The engine would still crank, but if your ecu didn't work at all the engine should not fire. As for cranking the engine over, there's not computer in that circuit. It's just wires, fuses, switches, and relays. What's your car doing that makes you suspect the ECU? __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

07-20-2008, 07:06 AM	#7
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	So what's the car doing that's abnormal? __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

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07-12-2008, 10:29 PM	#3
supramacist 1000whp postwhore Join Date: Apr 2007 Location: Escape from the Prison Planet Posts: 1,356	NO NO NO. The automatic ecu is not the same as the manual ecu. That's why they are clearly marked as to automatic or manual.

07-18-2008, 10:58 PM	#4
sevenmgte Intake Join Date: Mar 2006 Location: Oroville Posts: 31	how can i tell if the ecu is not working? would it still crank?

07-19-2008, 06:33 PM	#6
sevenmgte Intake Join Date: Mar 2006 Location: Oroville Posts: 31	that's what the tech said, and when i got it home did a diagnose on it my self. the check engine light just flash none stop.

07-20-2008, 03:39 PM	#8
sevenmgte Intake Join Date: Mar 2006 Location: Oroville Posts: 31	yea that's not normal. well i found another ecu the #'s almost matches mine check it out mine-89661-14240 17000-1471 his-89661-14280 175000-1511 so i was thinking since his #'s where bigger its a newer model right? so what u gays think bid end soon. i found it on ebay