trouble starting

italian89supra · 01-10-2011, 05:36 AM

just recently dropped a new 7MGTE engine in my 89 turbo supra less than 1000 miles

everytime i try to start this car it takes anywhere from 5 to 20 times to actually start the motor

sometimes i even have to clean the mass flow sensor just to start it and then it starts still hesitating

im thinking i need to replace the wiring to this sensor

if anyone can help me or have any suggestions plz let me know thank you very much

cre · 01-10-2011, 06:23 AM

DO NOT CLEAN IT!!!!! It is not a MAF type sensor it's a KVAFM (Karman Vortex Air Flow Meter); They're OPTICAL!!! You can completely ruin it. If you've tested it per the TSRM and that all pans out then check if someone in your area might have one you could swap in to test with.

Have you checked for diagnostic error codes and fuel issues?

italian89supra · 01-10-2011, 07:07 AM

me and a friend used an electrical spray to clean it and it worked for a little bit but i did notice the actual wiring is twisted and looks messy due to the fact that it probably still is the stock components

i havent done that yet because recently our trusted mechanic did one of my friends a lil dirty and in the process of finding a new one to run a diagnostic

i was thinking of going to the junkyard and replacing the whole thing and see if there is a change and just keeping the old one for now

it has been starting a lil better lately after i used the electrical spray

cre · 01-10-2011, 03:40 PM

Electrical contact spray isn't what you use to clean optics... crap,you don't even know what you're cleaning.... but you seem to know know otherwise, so why are you even here asking if you've already got the answers? Check the damned codes and post what you find, maybe someone else will help you out then. Good luck with the car. Ciao!

Green7mgte · 01-10-2011, 06:32 PM

lawl ciao
i didnt know you were Italian.

rotfl

italian89supra · 01-12-2011, 02:22 AM

its not that i thought i was right it was something that already happened b4 i posted the first time so unpreventable, but thanx for ur help i will do the recommendations

01-10-2011, 05:36 AM	#1
italian89supra Stock Join Date: Jan 2011 Location: bakersfield Posts: 16	trouble starting just recently dropped a new 7MGTE engine in my 89 turbo supra less than 1000 miles everytime i try to start this car it takes anywhere from 5 to 20 times to actually start the motor sometimes i even have to clean the mass flow sensor just to start it and then it starts still hesitating im thinking i need to replace the wiring to this sensor if anyone can help me or have any suggestions plz let me know thank you very much

01-10-2011, 06:23 AM	#2
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	DO NOT CLEAN IT!!!!! It is not a MAF type sensor it's a KVAFM (Karman Vortex Air Flow Meter); They're OPTICAL!!! You can completely ruin it. If you've tested it per the TSRM and that all pans out then check if someone in your area might have one you could swap in to test with. Have you checked for diagnostic error codes and fuel issues? __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

01-10-2011, 07:07 AM	#3
italian89supra Stock Join Date: Jan 2011 Location: bakersfield Posts: 16	mass flow connector and wiring me and a friend used an electrical spray to clean it and it worked for a little bit but i did notice the actual wiring is twisted and looks messy due to the fact that it probably still is the stock components i havent done that yet because recently our trusted mechanic did one of my friends a lil dirty and in the process of finding a new one to run a diagnostic i was thinking of going to the junkyard and replacing the whole thing and see if there is a change and just keeping the old one for now it has been starting a lil better lately after i used the electrical spray Last edited by italian89supra; 01-10-2011 at 07:12 AM. Reason: i have added a cutout exhaust, glowshift boost gauge and hks bov

01-10-2011, 03:40 PM	#4
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Electrical contact spray isn't what you use to clean optics... crap,you don't even know what you're cleaning.... but you seem to know know otherwise, so why are you even here asking if you've already got the answers? Check the damned codes and post what you find, maybe someone else will help you out then. Good luck with the car. Ciao! __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

01-10-2011, 06:32 PM	#5
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	lawl ciao i didnt know you were Italian. rotfl __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

01-12-2011, 02:22 AM	#6
italian89supra Stock Join Date: Jan 2011 Location: bakersfield Posts: 16	its not that i thought i was right it was something that already happened b4 i posted the first time so unpreventable, but thanx for ur help i will do the recommendations

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
1987 toyota supra trouble starting	derekrd	Non-Generation Specific Questions	3	12-09-2008 05:05 PM
Trouble starting when engine is warm	trevor217	MKIII Supra	4	12-23-2007 12:27 AM
starting motor	Dom	MKIV Supra	3	04-05-2007 01:57 PM
engine noise car dies after starting	tex1116	MKIII Supra	7	11-18-2005 06:47 PM
Trouble starting?	87supraturbo	MKIII Supra	3	10-03-2005 01:38 AM