-
Grand Future Air Dried Beef Dog Food

Carnivore Diet for Dogs

Air Dried Dog Food | Real Beef
Go Back   Automotive Forums Car Chat > Pontiac > Fiero
Register FAQ Community
Reply Show Printable Version Show Printable Version | Subscription Subscribe to this Thread
 
Thread Tools
  #1  
Old 01-07-2013, 04:28 PM
niccaleb112602 niccaleb112602 is offline
AF Newbie
 
Join Date: Jul 2005
Posts: 84
Thanks: 0
Thanked 0 Times in 0 Posts
Unhappy '86 Fiero v-6 injector/running issues

I tried everything. Started out back "odd" cylinder injector fuse would blow. Found injectors had a weak Ohm value. around 6-8. Changed all injectors. Now the back cylinders are not firing at all, front 3 are fine. No fuse blown. Noid light shows computer is firing injectors. Has spark at all cylinders.?? Whats missing? Compression is at 110-120 on all.
Reply With Quote
  #2  
Old 01-08-2013, 12:16 PM
Tech II Tech II is offline
AF Fanatic
 
Join Date: Jul 2011
Posts: 5,017
Thanks: 70
Thanked 618 Times in 610 Posts
Re: '86 Fiero v-6 injector/running issues

Disconnect, the injector harness.....crank over several times.....

Temp has to be above freezing....spray carb cleaner into intake while someone cranks the vehicle......if it starts and runs, you know it's a fuel delivery problem....either pressure low, or injector problem....

This is a multiport engine.....so 1-3-5 injectors all fire at the same time....the same for 2-4-6 injectors.....one bad injector(if shorted), will cause the driver for the 3 injectors to shut down.....all injectors should have 12 ohms across each of them......but when you measure the harness with an ohm meter, since the three are in parallel, they should ohm out in the circuit, at 4 ohms.....

Doesn't this engine also have a "cold start" injector?
Reply With Quote
 
Reply

POST REPLY TO THIS THREAD

Go Back   Automotive Forums Car Chat > Pontiac > Fiero


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 12:39 PM.

Community Participation Guidelines | How to use your User Control Panel

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