Bad Computer?
01-13-2008, 05:10 PM
#2
D.R. THE PATHETIC DORK
Join Date: Jun 2007
Location: West Virginia
Posts: 30,863
RE: Bad Computer?
ORIGINAL: bbbngowc
Just wondering what are some of the symptoms that I would see if my car's computer was bad? Prolly wouldn't start huh?
Just wondering what are some of the symptoms that I would see if my car's computer was bad? Prolly wouldn't start huh?
01-13-2008, 05:20 PM
#3
Join Date: Jan 2008
Posts: 6
RE: Bad Computer?
I have the same problem.. I replaced the distributor cap, spark plugs, mass air flow sensor, engine coolant sensor. I am getting a spark from the plugs and I check the fuel pressure and its good. According to this Haynes book the only other problem is something like "fuel management" so is that reffering to the ECU/ECM? I figure if the computer doesn't know how much gas to give it wont start or it is just automatically flooding itself (before I replaced the MAF I know for a fact the plugs were soaked in fuel which they might very well be again). I turn the key and it just sits cranking I used to get it started by giving it a little gas but now that seems to not even work. Anybody that can help either of us I can really use some input. Mabey even the timing is off? I just don't know any help is greatly appreciated.
01-13-2008, 05:55 PM
#4
D.R. THE PATHETIC DORK
Join Date: Jun 2007
Location: West Virginia
Posts: 30,863
RE: Bad Computer?
ORIGINAL: Kumdie
I have the same problem.. I replaced the distributor cap, spark plugs, mass air flow sensor, engine coolant sensor. I am getting a spark from the plugs and I check the fuel pressure and its good. According to this Haynes book the only other problem is something like "fuel management" so is that reffering to the ECU/ECM? I figure if the computer doesn't know how much gas to give it wont start or it is just automatically flooding itself (before I replaced the MAF I know for a fact the plugs were soaked in fuel which they might very well be again). I turn the key and it just sits cranking I used to get it started by giving it a little gas but now that seems to not even work. Anybody that can help either of us I can really use some input. Mabey even the timing is off? I just don't know any help is greatly appreciated.
I have the same problem.. I replaced the distributor cap, spark plugs, mass air flow sensor, engine coolant sensor. I am getting a spark from the plugs and I check the fuel pressure and its good. According to this Haynes book the only other problem is something like "fuel management" so is that reffering to the ECU/ECM? I figure if the computer doesn't know how much gas to give it wont start or it is just automatically flooding itself (before I replaced the MAF I know for a fact the plugs were soaked in fuel which they might very well be again). I turn the key and it just sits cranking I used to get it started by giving it a little gas but now that seems to not even work. Anybody that can help either of us I can really use some input. Mabey even the timing is off? I just don't know any help is greatly appreciated.
01-13-2008, 06:52 PM
#5
5th Gear Member
Join Date: Jan 2006
Location: Puerto Rico
Posts: 3,926
RE: Bad Computer?
As Mjr46 said, you need to go through the testing procedures...... How to Solve an EFI NO START + DIY KOEO/KOER/Cylinder Balance Self-Test
01-13-2008, 07:35 PM
#7
3rd Gear Member
Thread Starter
Join Date: Mar 2007
Location:
Posts: 787
RE: Bad Computer?
The reason I asked, is because I got this new ODB Scanner that reads vehicles from 83-present. It's not reading my car. Keeps telling me "the vehicle is not responding"
.
The car starts. Timing is off. And some other stuff going on, wondered if changing the computer would prolly be the reason to the probs.
.The car starts. Timing is off. And some other stuff going on, wondered if changing the computer would prolly be the reason to the probs.
01-13-2008, 07:39 PM
#8
D.R. THE PATHETIC DORK
Join Date: Jun 2007
Location: West Virginia
Posts: 30,863
RE: Bad Computer?
ORIGINAL: bbbngowc
The reason I asked, is because I got this new ODB Scanner that reads vehicles from 83-present. It's not reading my car. Keeps telling me "the vehicle is not responding".
The car starts. Timing is off. And some other stuff going on, wondered if changing the computer would prolly be the reason to the probs.
The reason I asked, is because I got this new ODB Scanner that reads vehicles from 83-present. It's not reading my car. Keeps telling me "the vehicle is not responding"
.The car starts. Timing is off. And some other stuff going on, wondered if changing the computer would prolly be the reason to the probs.
01-13-2008, 07:53 PM
#9
Join Date: Jan 2008
Posts: 6
RE: Bad Computer?
Yes I preformed the KOEO test two things that came up as a potential problem one caused by the MAF which has just been replaced, and "heated oxygen sensor indicated lean or rich right side". I pulled a plug and grounded it on the side of the motor and verified spark. I used a fuel pressure guage which said I had 32 psi.
01-14-2008, 07:08 AM
#10
3rd Gear Member
Thread Starter
Join Date: Mar 2007
Location:
Posts: 787
RE: Bad Computer?
ORIGINAL: mjr46
are you plugged into the connector under the hood????....you have to enter a mode that says koeo or koer on the scanner or memory codes
ORIGINAL: bbbngowc
The reason I asked, is because I got this new ODB Scanner that reads vehicles from 83-present. It's not reading my car. Keeps telling me "the vehicle is not responding".
The car starts. Timing is off. And some other stuff going on, wondered if changing the computer would prolly be the reason to the probs.
The reason I asked, is because I got this new ODB Scanner that reads vehicles from 83-present. It's not reading my car. Keeps telling me "the vehicle is not responding"
.The car starts. Timing is off. And some other stuff going on, wondered if changing the computer would prolly be the reason to the probs.