Home / Toyota Supra Forums

Go Back   Toyota Supra Forums! Join the Supra forum! > Performance, Modification, and Maintenance Forums - for generation specific discussions > MKIII Supra

Thread Tools Display Modes
Old 04-16-2011, 05:31 PM   #1
Join Date: Mar 2010
Location: frresno
Posts: 20
john_lauj is on a distinguished road
Default car wont start

I have a 90 mk3. My car turns but it wont start. I had check sparks and its good. Also i have fuel coming as well. I check the fuel line. Sometimes the car will almost turnover but it wont. Anyone can give some tips. Its all stock. Oh and timing is good too.
john_lauj is offline   Reply With Quote
Old 04-17-2011, 12:32 AM   #2

cre's Avatar
Join Date: Apr 2007
Posts: 5,036
cre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond repute

When did the problem start and what were you working on when it happened (if anything)? Have you tested the igniter and CPS? Any diagnostic codes? Is this a Turbo or non? Tested the fuel pump and fuel pressure?
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 --->
cre is offline   Reply With Quote
Old 04-21-2011, 06:33 PM   #3
3" Exhaust
spudz29212MKIII's Avatar
Join Date: Mar 2008
Location: Columbia, SC
Posts: 69
spudz29212MKIII is on a distinguished road
Default Cam Position Sensor

I had this same problem when I first bought my Supra. I could crank it for hours and it would never start. The problem was the cam position sensor, which had nothing wrong with it at all. Its the connection and/or wiring harness. Our cars are old and the wires become weak an brittle over time PLUS the wires for the CPS run right over the head...bad news bears.

My temporary fix was to disconnect CPS connector, clean, re-attach, and make sure it had a good connection...well that didn't work. Next I simply just took the wires that ran over the head and gave them a good jiggle/shake and boom! Started right up. Later I did re-wire it and no problems since. Hope this helps.
spudz29212MKIII is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
car suddenly wont start - never ran great anyway, esp. cold, now cranks, but won't st rjSupra MKIII Supra 41 03-21-2014 06:27 PM
87 non turbo wont start, need some advice...please. HotRodV6 MKIII Supra 3 09-02-2010 08:29 AM
Stalling at start up Green7mgte MKIII Supra 4 12-15-2009 06:31 PM
Car wont start hot carfanatic89 MKIII Supra 41 03-30-2009 11:58 PM
no start 87supraguy MKIII Supra 5 03-23-2006 07:31 AM

All times are GMT. The time now is 01:05 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.


1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86