SaturnFans.com
what's new (beta) - classifieds - forums - photos


Go Back   SaturnFans.com Forums > Models > Saturn S-Series > S-Series Tech
Register FAQ Members List Groups Calendar Chat Room Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Display Modes
Old 09-13-2019, 07:25 PM   #1
chadandcindy
Junior Member
chadandcindy is on a distinguished road
 
Join Date: Jun 2016
Posts: 21
Default computer issue or?

2002 SC- While driving today just shut off on the hwy,was able to coast and get into a parking lot. I turned the key off, then back on and it started right up? Sat and let it idle for a minute and when i put it in reverse it jerked into gear really hard but shifting to drive was smooth. I waited a minute and repeated and it did it again but the 3rd time was normal. Had to make 3 more stops before i got home and each time car started,shifted with no problem. Is this a computer issue, something in the security system causing the car to just shut off? Thanks

REWARD EXCELLENCE!

Add to chadandcindy's Reputation
Rate the quality of this post and help chadandcindy reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
chadandcindy is offline   Reply With Quote
SaturnFans.com Sponsored Links
Old 09-13-2019, 08:37 PM   #2
billr
Master Member
billr is a name known to allbillr is a name known to allbillr is a name known to allbillr is a name known to allbillr is a name known to allbillr is a name known to all
 
Join Date: Jul 2013
Posts: 5,061
Default Re: computer issue or?

It is not likely that the PCM (computer) is the problem, failures of those is petty rare, and an intermittent failure like this would be even rarer.

This is probably a problem with wiring, either in the power or ground wires. There are many places to check, so are you wanting to dig into this as a DIY project? If so, do you have an electrical multi-meter and the skills to use it (or want to invest in those)? If nothing else, check the cables that connect to the battery. Make sure those don't have any obvious looseness or corrosion. Next after that would be a connection at the fuse/relay block inside the cabin. It is often referred to as "F5" in this forum.

REWARD EXCELLENCE!

Add to billr's Reputation
Rate the quality of this post and help billr reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
billr is offline   Reply With Quote
Old 09-13-2019, 10:31 PM   #3
RobertGary1
Master Member
RobertGary1 is a glorious beacon of lightRobertGary1 is a glorious beacon of lightRobertGary1 is a glorious beacon of lightRobertGary1 is a glorious beacon of lightRobertGary1 is a glorious beacon of light
 
Join Date: Jun 2005
Location: Sacramento
Posts: 4,202
 

1996 SC2
2006 VUE 3.5L
Default Re: computer issue or?

Codes?

REWARD EXCELLENCE!

Add to RobertGary1's Reputation
Rate the quality of this post and help RobertGary1 reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
RobertGary1 is offline   Reply With Quote
Old 09-14-2019, 10:00 AM   #4
Claybury
Member
Claybury will become famous soon enough
 
Claybury's Avatar
 
Join Date: Oct 2016
Location: Mille Lacs
Posts: 261
Default Re: computer issue or?

Stop by a auto parts store and ask them to do a battery load test and an alternator test for you.

...
2002 SC2 1.9L
2007 Vue 3.5L
1985 Fiero SE 3.1L
1974 Triumph Spitfire 3.1L V6
2002 Ram duelly diesel 5.9L
1975 Honda PA50 0.05L (Swarm and destroy)

REWARD EXCELLENCE!

Add to Claybury's Reputation
Rate the quality of this post and help Claybury reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
Claybury is offline   Reply With Quote
Old 09-14-2019, 10:01 PM   #5
chadandcindy
Junior Member
chadandcindy is on a distinguished road
 
Join Date: Jun 2016
Posts: 21
Default Re: computer issue or?

finally got a chance to go get a code check done. Heres the LIST i got-P0128 coolant thermostat, P0232 fuel pump secondary circuit high, P0446 evap emission system vent control circuit, P0789 shift timing solenoid, P01599 engine stall or near stall. I hadnt seen the other replies to get battery load test while i was there too. I've had problems with the fuel pump in the past so the P0232 is really a concern.

REWARD EXCELLENCE!

Add to chadandcindy's Reputation
Rate the quality of this post and help chadandcindy reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
chadandcindy is offline   Reply With Quote
Old 09-14-2019, 10:56 PM   #6
fdryer
Super Member
fdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond repute
 
fdryer's Avatar
 
Join Date: Jan 2006
Location: NYC
Posts: 43,284
 

2003 L-Series 3.0L Sedan
Default Re: computer issue or?

Mileage, maintenance done, parts replaced? I think you mean P1599, a sideways hint of the engine stalling at random with several possibilities. This error may simply go away when the problem is found and fixed. Error code P0232 may be another false error as a result of the random engine die off. Last (random/false error) code P0789 about one of the shift solenoids not operating at the correct time. What these three error codes may have in common is their occurrence at the moment the engine randomly died unexpectedly then the pcm simply examines sensor data and spits out error codes. Each have their own circuitry to examine if you're willing to chase down each one but none aren't the cause of the engine randomly dying then restarting as if nothing occurred. Intermittent problems may one of the most difficult problems to address unless examined in a different perspective. The only error code that doesn't contribute to random engine die off is the P0128 error, possibly a worn out cold running thermostat. The simplest way to determine if the t-stat is underperforming, running colder than normal is to connect a reader and display actual coolant temps on a fully warmed up engine. You should expect to see between 185F-200F, no lower otherwise replace the t-stat.

The three error codes aren't killing the engine. The fuel pump circuit uses one relay from pcm commands to operate the fuel pump. The fuel pump fuse may be loose or have a faulty connection, the pump relay may be faulty or wiring is faulty. Replacing or reseating the fuse is one solution, replacing or reseating the pump relay is another solution. Wiring can be tested by measuring the command signal from the pcm (12v) and possibly a faulty pump ground connection by the trunk ground wire splices where pump ground may be corroded enough to create an intermittent pump issue. Several ground wires are tied together into a splice pack with one ring terminal connected to a chassis stud to provide ground. Several splice packs are around the vehicle. All usually grouping black wires as grounds.

REWARD EXCELLENCE!

Add to fdryer's Reputation
Rate the quality of this post and help fdryer reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
fdryer is offline   Reply With Quote
Old 09-15-2019, 10:42 AM   #7
Claybury
Member
Claybury will become famous soon enough
 
Claybury's Avatar
 
Join Date: Oct 2016
Location: Mille Lacs
Posts: 261
Default Re: computer issue or?

Get the battery and alternator tested before you go down a rabbit hole of testing. Low or dirty bus voltage can cause many spurious codes.

...
2002 SC2 1.9L
2007 Vue 3.5L
1985 Fiero SE 3.1L
1974 Triumph Spitfire 3.1L V6
2002 Ram duelly diesel 5.9L
1975 Honda PA50 0.05L (Swarm and destroy)

REWARD EXCELLENCE!

Add to Claybury's Reputation
Rate the quality of this post and help Claybury reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
Claybury is offline   Reply With Quote
Old 10-03-2019, 12:54 PM   #8
S-forever
Member
S-forever is on a distinguished road
 
Join Date: Jan 2019
Posts: 65

1997 SL2
1991 SL2
Default Re: computer issue or?

Definitely true that the electrics and charging system have to be right.

If the car is hot and intermittent engine stops happen - then it restarts after ten minutes or so, I'd suspect the CPS(crankshaft position sensor). It's cheap and not that hard to replace.

REWARD EXCELLENCE!

Add to S-forever's Reputation
Rate the quality of this post and help S-forever reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
S-forever is offline   Reply With Quote
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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
2007 Ion computer issue? jimmay Ion General 4 06-13-2014 12:21 AM
'03 Ion2, Computer issue? rcote20 Ion General 22 02-24-2014 11:01 PM
Tranny/ computer issue? 08auraj Aura General 1 11-13-2008 07:29 PM
What have I done to my computer? puer liber S-Series Tech 3 03-05-2008 03:55 PM
My car is losing it's mind (maybe a computer issue?) dylanr_93SL2 S-Series Tech 9 08-10-2003 12:48 AM


All times are GMT -4. The time now is 09:33 AM.

Advanced Forum Search | Advanced Photo Search


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
SaturnFans.com. The Saturn Enthusiasts Site.