Engine still wont start 87 supra 7mge

Bullz_EyE · 12-29-2005, 07:29 PM

Engines need 3 things to start. Compression, fuel, and spark. Time to start process of elimination. If you have all 3 your timing may be off or something may be wrong with a sensor or the ECU.

88Supraboy · 01-01-2006, 05:08 PM

check the Mass Air Flow sensor, if its not working right the car will start then die right away because its wating for a signal from the sensor. I had mine off once and it was doing it, i didnt understand why it would die but thats the whole reason for the sensor.

Good Luck

mattsmall · 01-01-2006, 08:46 PM

iv got an extra ecu for a 7mge with a manual trans 15 and ill ship it out to you.

TONY! · 01-01-2006, 10:13 PM

Have you checked for any codes?
If you have not, this may be of help:
http://www.cygnusx1.net/supra/techti...rrorcodes.html

If you have, did you get any codes?

rnoswal · 01-02-2006, 01:40 AM

Did it run with the old engine? It does sound like the airflow meter. The cold start injector is getting it started but then no signal to the rest of the injectors to keep it going. Try to make sure there are no big air leaks anywhere.

Russ

kikwear002 · 01-02-2006, 08:58 AM

the coils, check them for corrorision! happened to me couldnt figure it out. I cleaned them up and she ran perfect!

lilsmitty · 01-03-2006, 03:11 AM

mass air flow senser is makin a funny noise like a little tin clunk every once in a while....

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Help!!! Cannot start Supra	jagman	MKIII Supra	3	12-07-2007 08:41 PM
Best year and engine Supra to buy, your thoughts please.	Jpw	MKIV Supra	2	11-17-2007 07:58 AM
7MGE to 1JZGTE engine swap help please!	seek102287	Non-Generation Specific Questions	2	07-02-2007 12:57 AM

12-29-2005, 07:29 PM	#1
Bullz_EyE 3" Exhaust Join Date: Oct 2005 Location: San Diego, CA Posts: 238	Engines need 3 things to start. Compression, fuel, and spark. Time to start process of elimination. If you have all 3 your timing may be off or something may be wrong with a sensor or the ECU.

01-01-2006, 05:08 PM	#2
88Supraboy 3" Exhaust Join Date: Oct 2005 Location: Michigan Posts: 55	check the Mass Air Flow sensor, if its not working right the car will start then die right away because its wating for a signal from the sensor. I had mine off once and it was doing it, i didnt understand why it would die but thats the whole reason for the sensor. Good Luck

01-01-2006, 08:46 PM	#3
mattsmall Stock Join Date: Jan 2006 Location: maryland Posts: 17	iv got an extra ecu for a 7mge with a manual trans 15 and ill ship it out to you.

01-01-2006, 10:13 PM	#4
TONY! 12psi boost Join Date: Sep 2005 Location: Troy, NY 12180 Posts: 353	Have you checked for any codes? If you have not, this may be of help: http://www.cygnusx1.net/supra/techti...rrorcodes.html If you have, did you get any codes?

01-02-2006, 01:40 AM	#5
rnoswal Lexus & 550's Join Date: Apr 2005 Location: Bossier City LA Posts: 556	Did it run with the old engine? It does sound like the airflow meter. The cold start injector is getting it started but then no signal to the rest of the injectors to keep it going. Try to make sure there are no big air leaks anywhere. Russ

01-02-2006, 08:58 AM	#6
kikwear002 Intake Join Date: Dec 2005 Posts: 30	the coils, check them for corrorision! happened to me couldnt figure it out. I cleaned them up and she ran perfect!

01-03-2006, 03:11 AM	#7
lilsmitty Intake Join Date: Jul 2005 Posts: 35	mass air flow senser is makin a funny noise like a little tin clunk every once in a while....