1990 Escort Loss of Tach Signal HELP!

Reply

  #1  
Old 09-02-05, 09:49 AM
L
Mr. Kiss
Thread Starter
Join Date: Jan 2002
Location: SW Chicago, IL USA
Posts: 87
Received 0 Votes on 0 Posts
1990 Escort Loss of Tach Signal HELP!

Yesterday I finally went back out to get the little bugger running and after charging the battery she fired right up. I did check fuel pressure and it's a tad low at 9 PSI but the engine appears to run fine at that. Also found voltage to the pump low (6v) from the fuel pump relay so pulled it out and bypassed it. fuel pump now getting 12v but still stalling. The problem begins after about 10 min. when it appears the loss of tach signal to the electronic control assembly is what's killing the engine. I noticed when the sputtering starts the tach actually begins to drop to zero at the same time. The KOEO codes are 18, 87, 96. #18 Spout Grounded (Spark Output Grounded) makes sense, now how do I determine why the computer is giving that signal... (I assume it's a sensor but which one). Would consistent low fuel pressure signal the computer to ground the ignition spark module? I'm guessing there's an input (sensor) to the computer signaling the tach signal off.
 
Sponsored Links
  #2  
Old 09-02-05, 01:42 PM
B
Member
Join Date: Dec 2001
Posts: 2,538
Received 0 Votes on 0 Posts
look at your ignition system for the tach problem such as module or pickup in the distributer.
 
  #3  
Old 09-02-05, 02:08 PM
L
Mr. Kiss
Thread Starter
Join Date: Jan 2002
Location: SW Chicago, IL USA
Posts: 87
Received 0 Votes on 0 Posts
Originally Posted by bejay
look at your ignition system for the tach problem such as module or pickup in the distributer.
Anything more specific?

It appears to shut down after a set time which tells me the computer is suddenly getting an input from a sensor....

Anyone?

LC
 
Reply
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


Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description: