Signs of a bad computer. - Saturn ION RedLine Forums
Saturn ION Redline Saturn ION Redline Forums

» Auto Insurance
» Featured Product
Wheel & Tire Center

Go Back   Saturn ION RedLine Forums > ION Redline Forums > Tuning & Electronics

RedlineForums.com is the premier Saturn Ion Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 01-05-2010, 08:07 PM   #1 (permalink)
Senior Member
 
Join Date: Apr 2009
Posts: 121
Signs of a bad computer.

Well with my car messed up and not wanting to start. Im just trying to get the following things out of the way to narrow down why this bitch won't start.

What are some of the symptoms that the computer is bad? Some of the things that has me worried is when i try to start the car and I let off the key she will still crank like two more time before actually starting. Another thing is the rpm and speedo needle will drop way below the bottom of the gauge. And last but not least I have a damn CEL but when I put my code reader is shows no codes and that I pass. Is she fried? And where can I get one cheap?
__________________

2007 Cobalt SS/SC -Fujita CAI, Ingalls "Stiffy" Damper, Progress Spings, Black Headlights(painted), 12000k HID Lights, Debadged Trunk,Tinted Tails
redline4 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 01-06-2010, 08:14 AM   #2 (permalink)
Senior Member
 
Cat Ion's Avatar
 
Join Date: Oct 2006
Location: Las Vegas, NV
Posts: 5,612
I believe the start issue is a non-issue. All these ignitions will continue the crank cycle after letting off the key. Can't remember what it's called, but it's normal. The rest sounds like the BCM, not the ECM.
Cat Ion is offline   Reply With Quote
Old 01-06-2010, 10:02 AM   #3 (permalink)
Senior Member
 
Omega_5's Avatar
 
Join Date: Nov 2007
Location: Maidstone, SK
Posts: 1,507
Quote:
Originally Posted by redline4 View Post
Some of the things that has me worried is when i try to start the car and I let off the key she will still crank like two more time before actually starting.
GM vehicles have had this feature for quite a few years now. You simply have to bump the starter, and the car does the rest.
As to why it starts hard is another issue.

Quote:
Originally Posted by redline4 View Post
Another thing is the rpm and speedo needle will drop way below the bottom of the gauge.
When turned off, I assume?
This is also normal... in a Cobalt at least.
Mine has done that since day one.

Quote:
Originally Posted by redline4 View Post
And last but not least I have a damn CEL but when I put my code reader is shows no codes and that I pass. Is she fried? And where can I get one cheap?
Is your reader a cheap-o reader?
Many cheap OBD readers will not read manufacture specific codes.... which is probably what your CEL is.


Now, I should explain some things about fried PCM's.
Many people jump on the PCM as being the root cause of engine problems... this rarely the case. 99% of the time, it's a sensor, connection, or corrupt file (yeah... it happens).
Unless you used HPT and did something dumb... or physically abused the PCM (via force, or ESD), it's not broken.
__________________
Tyler
Omega_5 is offline   Reply With Quote
Old 01-06-2010, 06:45 PM   #4 (permalink)
Senior Member
 
Mid-life-remedy's Avatar
 
Join Date: Feb 2009
Location: Cochranton, PA
Posts: 488
I'm curious, not from the rl, but from my son's cougar. Is there anywhere or anyway of actually testing a computer. Because of an engine change and computer change we took his car in to have the computer programed to the key. They could not communicate with the computer so they think it is in the wiring. It is a brand new harness. Before I do a lot of chasing of wires, I would love to know if the computer is actually good. The computer that was hooked up and came out of the car the engine came out of was up on top of the engine when we got the car. (We were told the only thing it needed was programed to start, well aparently not.) Anyways, when we picked it up to install it where it belongs under the dash, a lot of water came running out of the case. To me that's not a good sign. I'd just like to be able to know one way or the other.
Mid-life-remedy is offline   Reply With Quote
Old 01-06-2010, 06:53 PM   #5 (permalink)
Senior Member
 
Join Date: Apr 2009
Posts: 121
Quote:
Originally Posted by Omega_5 View Post
GM vehicles have had this feature for quite a few years now. You simply have to bump the starter, and the car does the rest.
As to why it starts hard is another issue.



When turned off, I assume?
This is also normal... in a Cobalt at least.
Mine has done that since day one.



Is your reader a cheap-o reader?
Many cheap OBD readers will not read manufacture specific codes.... which is probably what your CEL is.
No only thing I did was suck up water...Which i've cleaned out completely. I rented like a 200 dollar code checker which i've used multiple times to read my cel. Only thing right now i see wrong is it wont' get a spark. I've checked the spark plugs and replaced them and they are good and the coilpacks aren't getting spark either so I was thinking crank position sensor.
redline4 is offline   Reply With Quote
Old 01-06-2010, 08:07 PM   #6 (permalink)
Senior Member
 
Join Date: Aug 2009
Location: Saskatoon SK
Posts: 274
You and I got somewhat the same issue and im still working on fixing mine....

Mine cranks over after fuel is added... im thinking mines a fuel filter problem or the stater isn't connection... i'll be finding out soon as it's annoying... Go out and she'll fire up, then die then it's a fight to get it going and keep it going...

I'v had to sit there for 10 minutes give it alittle gas to get it to finally catch... Oh the mysteries..

I thought it was just due to the cold - 30 so i plugged it in.. same issue...

Im starting to lean towards a bad fuel filter / spark.
__________________
06 Redline -

07 Redline Silver Sept 22 2012... Stock 56,000 km's..

Long Haul trucker, USA and Canada.
lkmk is offline   Reply With Quote
Old 01-06-2010, 08:25 PM   #7 (permalink)
Senior Member
 
Join Date: Apr 2009
Posts: 121
Better luck than me I suppose. mine wont' even start. It will turn over but doesn't start.
redline4 is offline   Reply With Quote
Old 01-07-2010, 08:07 AM   #8 (permalink)
Senior Member
 
Omega_5's Avatar
 
Join Date: Nov 2007
Location: Maidstone, SK
Posts: 1,507
Quote:
Originally Posted by redline4 View Post
No only thing I did was suck up water...
That could have damaged any number of sensors, or mechanical components.

About the CEL... try getting a hold of a tech2... I guarantee it will be able to read the code.
Omega_5 is offline   Reply With Quote
Old 01-07-2010, 08:15 PM   #9 (permalink)
Senior Member
 
Join Date: Apr 2009
Posts: 121
I only have two problems with that...I don't have a grand to put towards a reader and my car is stationary so I can't get it to the dealership lol
redline4 is offline   Reply With Quote
Old 01-08-2010, 07:24 AM   #10 (permalink)
Senior Member
 
Omega_5's Avatar
 
Join Date: Nov 2007
Location: Maidstone, SK
Posts: 1,507
Quote:
Originally Posted by redline4 View Post
I only have two problems with that...I don't have a grand to put towards a reader and my car is stationary so I can't get it to the dealership lol
You'll either need a tow truck, or befriend a tech.
Omega_5 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
FS: Computer Scott.Florschuetz Buy/Sell Parts 4 04-22-2009 11:00 PM
Bad boys bad boys whatch gonna do vlipke Off-Topic Discussion 1 04-29-2008 02:31 PM
Signs of a Bad Cat?? snobrdrdan Problems & Troubleshooting 30 11-11-2007 01:13 AM
too bad there damaged this bad! yeahididit2 Off-Topic Discussion 21 07-26-2007 05:57 PM
Restroom Signs Ect. fullthrottle Off-Topic Discussion 3 11-17-2006 10:07 AM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -6. The time now is 03:25 PM.



Search Engine Optimization by vBSEO 3.3.2