Welcome to the 2GNT Forum!
Home Site Background Info & Specs Mods & Tech Info CAPS Part Reviews Donate 2GNT Stickers
Search Printer-friendly copy 1 User in Chat
Top 2GNT Technical Performance/Engine topic #88139
View in linear mode

Subject: "Symptoms of a Bad ECU.." Previous topic | Next topic
xdannyx25Apr-12-05 12:20 AM
Member since Mar 10th 2002
23 posts,
Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#88139, "Symptoms of a Bad ECU.."


          

I recently rebuilt my engine completely and put it back in. Everything went well till I started the shit. It would idle at 3500 rpms, then suddenly after my cousin started the car like 5 times to hear the exhaust it wouldnt start again. So I changed the IACV since I had an extra one to fix the idle problem hopefully. But it doesnt start due to theres no spark and no fuel. The coil harness isnt getting any voltage besides .7 on cranks. I decided to change the cam sensor with a used one (doesnt mean its good) still didnt get spark, I then put in a brand new crank shaft sensor and still no spark. I got fed up and gave up on the spark shit for that day and moved to the fuel problem. The fuel pump wouldnt run, so I replaced it since i have warranty, still nothing, I check the relays and had them click with wires and they did. Also to add theres no check engine light.

-New fuel pump
-Relays suposively check out good
-New crank shaft sensor
-2 different Cam sensors
-2 different coils (i just changed it for the hellk, have an extra one)

Im goign to check the wiring today and the ASD relay (see if i have an extra one). Also have my friend with a scanner see if that might help use. But if it isnt that, could it possibly be my ecu?

  

Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

Replies to this topic

talonguy2005Apr-12-05 01:31 AM
Member since May 16th 2004
1473 posts,
Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#88140, "RE: Symptoms of a Bad ECU.."
In response to Reply # 0




          

the ECU really seems like a possibility, did it start before?



1992 Plymouth Laser
-Bone stock for now.

  

Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

    
mcgyvrApr-12-05 04:12 AM
Old School 2GNTer
3121 posts,
Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#88142, "RE: Symptoms of a Bad ECU.."
In response to Reply # 1


          

well the ASD relay does give power to the coil and fuel injectors. so that could def be your problem.

1998 dodge avenger 4 cyl AT
Mods are:
Not enough

  

Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

    
xdannyx25Apr-12-05 05:26 AM
Member since Mar 10th 2002
23 posts,
Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#88143, "RE: Symptoms of a Bad ECU.."
In response to Reply # 1
Apr-12-05 05:27 AM by xdannyx25

          

Yes the car started before tons of times.

Im sorry for not adding this. Its a 1997 Mitsubishi Eclipse GS

  

Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

        
thedawgApr-12-05 08:41 AM
Donating 2GNT member
6287 posts,
Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#88151, "RE: Symptoms of a Bad ECU.."
In response to Reply # 3


          

Sounds like ASD relay.

The 1995 ECU goes bad in the way you described, but I haven't heard of a 1997 failing like that.

  

Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

            
xdannyx25Apr-13-05 10:41 AM
Member since Mar 10th 2002
23 posts,
Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#88219, "RE: Symptoms of a Bad ECU.."
In response to Reply # 4


          

The ASD relay is good. There is no voltage at the harness to the fuel pump, cam sensor, and crank sensor.

  

Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

Top 2GNT Technical Performance/Engine topic #88139 Previous topic | Next topic
Powered by DCForum+ Version 2.2
Copyright 1997-2005 DCScripts.com, Copyright 2005-2026 2gnt.com
Generated in 0.068 seconds, executing 24 queries.