Automotive Forums .com - the leading automotive community online! Automotive Forums .com - the leading automotive community online!
Automotive Forums .com - the leading automotive community online! 
-
Latest | 0 Rplys
Go Back   Automotive Forums .com Car Chat > Toyota > Previa
Reply Show Printable Version Show Printable Version | Email this Page Email this Page | Subscription Subscribe to this Thread
 
Thread Tools Search this Thread
Old 12-08-2004, 11:05 PM   #1
3stews
AF Newbie
 
Join Date: Dec 2004
Location: port Alberni
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
92 Previa No Spark *** Help please

My 92 previa has lost spark, I have battery voltage to + side of coil and 10.8v durring crank. I have put a test light to the - side of coil durring crank and it flashes lightly. The coil resistance values are right to spec .5ohms primary and 11k secondary. The coil wire has only 3k resistance in it. The distributor pick up coils are within resistance ranges and all of the wiring in the circuit has good continuity. And yes the distributor is spinning. I replaced the ignitor. Tested another ECM. Nothing... I am at a loss as where to go from here???? Can a coil with normal resistance and no visible signs of trouble be weak?
I tried holding the coil wire while the engine cranked and there is a weak spark, enough to hurt, but not enough to arc to ground.
ANY HELP PLEASE......
3stews is offline   Reply With Quote
Old 12-17-2005, 04:45 PM   #2
lisamac
AF Newbie
 
Join Date: May 2005
Location: dededo
Posts: 33
Thanks: 0
Thanked 0 Times in 0 Posts
Re: 92 Previa No Spark *** Help please

I'm having the same trouble, can you tell me where's the Ignitor is it in the distributor. Have you fix yours yet.
lisamac is offline   Reply With Quote
Old 12-23-2005, 12:50 PM   #3
Grumoly
AF Newbie
 
Join Date: Dec 2005
Location: Vernon
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Re: 92 Previa No Spark *** Help please

[Hello all - new to forums but when I read this I thought I might hav a suggestion.

Just this weekend I was trying to clean my MAF Sensor ( on the top of the air filter box) and I damaged it - the result was that there was no spark. Replaced with one from a wrecker and all is OK. - Maybe your MAF Sensor is bad? Watch out though - I don't believe it will come up with a trouble code at Toyota. They spent 3 hours nearly and didn't check it like I asked because no code came up - when I insisted they found it to be the problem.
Hope this helps.
Grumoly is offline   Reply With Quote
Old 12-23-2005, 05:47 PM   #4
lisamac
AF Newbie
 
Join Date: May 2005
Location: dededo
Posts: 33
Thanks: 0
Thanked 0 Times in 0 Posts
Re: Re: 92 Previa No Spark *** Help please

I couldn't verify that the MAF is the problem, when the EFI fuse blows there's No Power at it, because the power to it has to go thru the EFI Main Relay and thru the Circuit Opening Relay and then to the MAF

The EFI fuse blows even if the EFI Relay and Circuit Opening is removed when you turn the key On.

I appreciate your respond and if anything should come up in your mind,am willing to listen and learn. I'm at total lost finding this problem.

Thank You and Merry Christmas/Happy New Year 06
lisamac is offline   Reply With Quote
Old 12-30-2005, 02:13 AM   #5
Brian R.
Resident Chemist
 
Brian R.'s Avatar
 
Join Date: Feb 2004
Location: Rockville, Maryland
Posts: 8,542
Thanks: 102
Thanked 146 Times in 146 Posts
Send a message via Yahoo to Brian R.
Re: 92 Previa No Spark *** Help please

Quote:
Originally Posted by 3stews
My 92 previa has lost spark, I have battery voltage to + side of coil and 10.8v durring crank. I have put a test light to the - side of coil durring crank and it flashes lightly. The coil resistance values are right to spec .5ohms primary and 11k secondary. The coil wire has only 3k resistance in it. The distributor pick up coils are within resistance ranges and all of the wiring in the circuit has good continuity. And yes the distributor is spinning. I replaced the ignitor. Tested another ECM. Nothing... I am at a loss as where to go from here???? Can a coil with normal resistance and no visible signs of trouble be weak?
I tried holding the coil wire while the engine cranked and there is a weak spark, enough to hurt, but not enough to arc to ground.
ANY HELP PLEASE......
Yes, the coil can be disfunctional and still show good resistance. There is a big difference between resistance using a 9V test probe and handling 20 kV without breaking down.
__________________
Forum Guidelines:http://www.automotiveforums.com/vbulletin/guidelines.html

"What we've got here is a failure to communicate"
Brian R. is offline   Reply With Quote
Old 12-31-2005, 10:54 PM   #6
lisamac
AF Newbie
 
Join Date: May 2005
Location: dededo
Posts: 33
Thanks: 0
Thanked 0 Times in 0 Posts
Re: Re: Re: 92 Previa No Spark *** Help please

HI

Located the problem: The Orange/Black wire is shorted to the Black/White taking out the EFI fuse and disabling the Main Relay at the same time. Thanks to all that Help.
lisamac is offline   Reply With Quote
Old 12-31-2005, 11:08 PM   #7
Brian R.
Resident Chemist
 
Brian R.'s Avatar
 
Join Date: Feb 2004
Location: Rockville, Maryland
Posts: 8,542
Thanks: 102
Thanked 146 Times in 146 Posts
Send a message via Yahoo to Brian R.
Re: 92 Previa No Spark *** Help please

Good Job!
__________________
Forum Guidelines:http://www.automotiveforums.com/vbulletin/guidelines.html

"What we've got here is a failure to communicate"
Brian R. is offline   Reply With Quote
Old 01-13-2006, 07:04 AM   #8
lisamac
AF Newbie
 
Join Date: May 2005
Location: dededo
Posts: 33
Thanks: 0
Thanked 0 Times in 0 Posts
Re: 92 Previa No Spark *** Help please

Have you fix the problem with No spark?-if not come on back and I'll help you
lisamac is offline   Reply With Quote
Old 01-13-2006, 08:28 AM   #9
Brian R.
Resident Chemist
 
Brian R.'s Avatar
 
Join Date: Feb 2004
Location: Rockville, Maryland
Posts: 8,542
Thanks: 102
Thanked 146 Times in 146 Posts
Send a message via Yahoo to Brian R.
Re: 92 Previa No Spark *** Help please

Not likely - that post is a year old.
__________________
Forum Guidelines:http://www.automotiveforums.com/vbulletin/guidelines.html

"What we've got here is a failure to communicate"
Brian R. is offline   Reply With Quote
Old 11-22-2018, 04:28 PM   #10
mjsawyerjr
AF Newbie
 
Join Date: Nov 2018
Location: Pearl City, Hawaii
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Re: 92 Previa No Spark *** Help please

lisamac, I know it has been a long time. But, if you still remember, could you please describe where in the vehicle the Orange/Black wire was shorted to the Black/White? And, I only see a Black/Orange, not an Orange/Black. Please advise. Thanks!
mjsawyerjr is offline   Reply With Quote
 
Reply

POST REPLY TO THIS THREAD


Bookmarks
Go Back   Automotive Forums .com Car Chat > Toyota > Previa

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -5. The time now is 04:06 PM.

Community Participation Guidelines | How to use your User Control Panel

Powered by: vBulletin | Copyright Jelsoft Enterprises Ltd.
 
 
no new posts