Intermittently will not start, when it's "warm",[it's not hot] have wait 1/2 hr. just never know when. All so it's hard to keep the revs down. some times if I stop & turn car off & restart it will come back down, sometimes. has taken to stalling while idling, like at red light.1/2 hr to restart
You have a bad air intake manifold gasket. If it runs idling high, take a can of brake cleaner and spray it on the air intake manifold by the firewall. Spray it right where the air intake bolts on. There are 8 10mm bolts or nuts there. When you spray it while idling, the revs will come down. This makes sure that is the problem before you go any farther. My 02 did the same thing.If you need to know how to change it, let me know, I can walk you through it. It's a one to two hour job, b ut easy
SOURCE: car hard to start after engine is warm
Sounds exactly like what I was dealing with a while ago. A nuisance (especially at fuel stations & such, where if you don't get it right away you end up looking like an idiot as it just turns over & over).
For me, it was my fuel filter. The previous owner had neglected the car so much & I had no idea how long it had been. $50 at an Oil Can Henrys & it was all back to normal. Great first step.
SOURCE: engine stalls when restarted idles up and down and stalls
I went through this scenario while working in a toyota sienna a few months ago and it ended up being the battery. When battery supply voltage starts to drop the PCM will limit voltage to certain areas.
SOURCE: my saturn 2001 stalls at stop lights when in idle
You can't afford to not take it to a Saturn dealer. Look at all the worry your going through not to mention possibly lost time from your job. I had the same problems with my 98 SL1. First time it went to the Saturn dealer they diagnosed a bad coolent tempurature sensor. The car was fine for about 2 months then it would start and then stall bfore I could get out of the driveway. This time the dealer diagnosed a bad crank position sensor. That was 3 years ago and the car has run well since. I believe your car could have one of these problems (maybe both). Take it to the dealer. They probably see Saturns with these problems every week and will know how to fix them.
SOURCE: will not start after it stalls untill about 5-10 minutes
Your problem is most likey your intake gasket.They have a problems on the SOHC engines where the intake gasket shifts & starts leaking vacuum at the #1 intake runner causing a missfire on Cylinder #1.While the engine is Idling buy some throttle plate cleaner & spray throttle cleaner down at the #1 Intake runner where the intake meets the head.If engine stalls or runs rougher that's your problem.I have replaced dozens of those gaskets for tha reason!! They have a beter design gasket through saturn parts.It has a coating on it to prevent reoccurance.Also you should check you Coolant Temp Sensor,if it's ceramic it's most likely bad.Replacement is brass from saturn.Good Luck
SOURCE: 91 Saturn stalls while driving
I'm having the same problem, so far what i can come up with is the IAC system ( intake air control) either the IAC valve or the stepper motor that the IAC valve sits on. I have already replaced valve and it is comming up code 35 IAC system. I'm thinking now i have to replace the stepper motor.
It can be issue
with IAC( idle air control valve) causing the problem.
There
are many other possibilities causing these idle issues. Engine idles rough.
There
are few help links with solutions to troubleshoot such idle issues.
I
suggest you refer the link below and follow
its troubleshooting details:------
Click
the link below:-----
-----------
http://schematicsdiagram.blogspot.in/2012/03/stumbling-and-stalling-at-idle-after.html
------------
http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html
---------
http://repairhelpcenter.blogspot.com/2012/01/engine-stumbles-coming-off-idle-when.html
------------------
http://schematicsdiagram.blogspot.com/2011/12/erratic-idle-on-car.html
-----------
Cold start problem and vehicle shudder around 2500 to
3500 rpms
----------
http://repairhelpcenter.blogspot.com/2011/12/low-idle-when-cold-out-side.html
-----------
http://technoanswers.blogspot.com/2012/10/gmc-sonoma-stalls-and-idles-low.html
--------
http://schematicsdiagram.blogspot.com/2011/12/gmc-idle-air-control-iac-valve.html
-------------
http://repairhelpcenter.blogspot.com/2011/10/1996-camry-intermittent-engine-failure.html
------------
http://repairhelpcenter.blogspot.com/2011/10/engine-quits-at-idle.html
-----------
http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html
---------
High
Idle Problem
http://repairhelpcenter.blogspot.com/2012/10/high-idle-problem.html
-------
http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html
---------
http://technoanswers.blogspot.in/2012/02/idle-flair-is-noticed-on-car-rough-idle.html
--------
http://technoanswers.blogspot.in/2012/02/high-rpm-in-neutral-inconsistant-high.html
-------
http://schematicsdiagram.blogspot.in/2012/03/vehicle-stumbling-at-idle-and-shows.html
----------
http://technoanswers.blogspot.in/2012/03/rough-idlestaling-and-erratic-shifting.html
-----------
http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html
---------
These
details will help.
Thanks.
It can be issue
with IAC( idle air control valve) causing the problem.
There
are many other possibilities causing these idle issues. Engine idles rough.
There
are few help links with solutions to troubleshoot such idle issues.
I
suggest you refer the link below and follow
its troubleshooting details:------
Click
the link below:-----
-----------
http://schematicsdiagram.blogspot.in/2012/03/stumbling-and-stalling-at-idle-after.html
------------
http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html
---------
http://repairhelpcenter.blogspot.com/2012/01/engine-stumbles-coming-off-idle-when.html
------------------
http://schematicsdiagram.blogspot.com/2011/12/erratic-idle-on-car.html
-----------
Cold start problem and vehicle shudder around 2500 to
3500 rpms
----------
http://repairhelpcenter.blogspot.com/2011/12/low-idle-when-cold-out-side.html
-----------
http://technoanswers.blogspot.com/2012/10/gmc-sonoma-stalls-and-idles-low.html
--------
http://schematicsdiagram.blogspot.com/2011/12/gmc-idle-air-control-iac-valve.html
-------------
http://repairhelpcenter.blogspot.com/2011/10/1996-camry-intermittent-engine-failure.html
------------
http://repairhelpcenter.blogspot.com/2011/10/engine-quits-at-idle.html
-----------
http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html
---------
High
Idle Problem
http://repairhelpcenter.blogspot.com/2012/10/high-idle-problem.html
-------
http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html
---------
http://technoanswers.blogspot.in/2012/02/idle-flair-is-noticed-on-car-rough-idle.html
--------
http://technoanswers.blogspot.in/2012/02/high-rpm-in-neutral-inconsistant-high.html
-------
http://schematicsdiagram.blogspot.in/2012/03/vehicle-stumbling-at-idle-and-shows.html
----------
http://technoanswers.blogspot.in/2012/03/rough-idlestaling-and-erratic-shifting.html
-----------
http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html
---------
These
details will help.
Thanks.
HOT/WARM START ISSUE
Its
a hot start issue.
Can
be related to low fuel pressure or problem with crank sensor.
Also
it can be weak battery or starter.
But
possibilities are to be inspected to confirm what exactly it is.------
To
troubleshoot and confirm the issue,i suggest you refer few solved help links
with similar types of problem like yours:------
Click
the link below:------
http://whatisbyme.blogspot.in/2012/05/1991-toyota-trecel-engine-starts-fine.html
-------------
http://howtobyme.blogspot.in/2012/05/1994-toyota-pickup-starts-fine-but-dies.html
------------
http://whatisbyme.blogspot.in/2012/05/1995-lexus-ls400-running-hot.html
------------
http://whatisbyme.blogspot.in/2012/05/2002-toyota-camry-puff-of-blue-or-white.html
------------
http://schematicsdiagram.blogspot.in/2012/04/multiple-problems-on-car-car-runs-hotac.html
--------------
-----------
http://technoanswers.blogspot.in/2012/02/honda-car-will-not-start-intermittently.html
--------------
http://whoisbyme.blogspot.in/2012/07/vehicle-startsruns-and-loses-power.html
--------------
http://schematicsdiagram.blogspot.in/2012/02/intermittent-starting-issues-on-volvo.html
-----------
http://repairhelpcenter.blogspot.com/2012/01/car-starts-and-cuts-off-immediately.html
-----------
http://schematicsdiagram.blogspot.com/2011/12/car-wont-start-when-cold.html
===========
These
details will help.
Thanks.
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