Saturn Cars & Trucks - Page 4 - Recent Questions, Troubleshooting & Support


Do you know what a wiring diagram is an how to use it along with a DVOM - digital volt ohmmeter to test to test electrical circuits ? You probably don't know how the starting system works on that vehicle ?

Circuit Description (Key Start)
For ignition switch power modes refer to Body Control System Description and Operation . When the ignition switch is placed in the Start position a discrete signal is supplied to the body control module (BCM) notifying it that the ignition is in the Start position. The BCM then sends a message to the powertrain control module (PCM)/engine control module (ECM) notifying it that CRANK has been requested. At the same time the BCM is supplying 12 volts for the IGN 1 relay closing it and supplying battery positive voltage for the crank relay coil. The PCM/ECM verifies that the transmission is in Park or Neutral. If it is, the PCM/ECM grounds the control circuit of the crank relay. When this occurs battery positive voltage is supplied through the switch side of the crank relay to the S terminal of the starter solenoid.

Is the security light lit on the instrument cluster ?

Saturn Cars &... | Answered on Oct 08, 2019


It is in the fuel tank and is part of the fuel pump assembly. You have to drop the tank and replace the entire part meaning fuel pump also.

Saturn Cars &... | Answered on Oct 08, 2019


when you flip it down look up between the display and the front there are screws in there

2005 Saturn... | Answered on Oct 06, 2019


Do yourself a favor an have it towed to a qualified repair shop. Just replacing parts is not the way to diagnose the problem . Viewing service information on how it works is . Hooking up a professional scan tool (not a code reader) an checking for DTC'S - diagnostic trouble codes in all the modules (computers ) on the vehicle . Bet you have no idea how the starting system even works on your that vehicle . 2008 Saturn Xr What ? astra - Vue - outlook - Aura ???? When the ignition switch is turned to the Start position, the body control module (BCM) receives battery voltage on the ignition 1 voltage circuit, and less than 5 volts on the off/run/crank voltage circuit. The BCM supplies voltage to energize the RUN/CRANK Relay 32. The BCM sends a high speed GMLAN serial data message to the engine control module (ECM) that the key is in the start position. The ECM receives the message from the BCM, and also receives a serial data message from the transmission control module (TCM) containing the shift lever position. If the shift lever is in Park or Neutral when ignition switch is turned to Start, the ECM supplies voltage to the START Relay 31. The START relay supplies voltage to the S terminal of the starter solenoid, through the 30 A STRTR Fuse 26, in order to crank the engine.

Saturn Cars &... | Answered on Oct 06, 2019


This vehicle with this engine doesn't have a MAP sensor , has Mass Air Flow (MAF) Sensor

2009 Saturn... | Answered on Oct 02, 2019


Assuming it is an automatic transmission, I would look into that first. Check the fluid level. Low fluid level will cause hesitation. If your fluid level is ok consider changing the transmission fluid and transmission filter. Saturn's have an external filter, so it's very easy to do.

1995 Saturn Sl | Answered on Oct 02, 2019


That won't be fuses. Not all would go at the same time. That being said, I would still double back and recheck them. Check the relays in the fuse box. The fuse box cover will have a "map" that identifies which relay or relays you need to check.

Saturn S-Series... | Answered on Oct 02, 2019


I'm not an expert on the Aura, but most Saturn engines have the knock sensor on the back of the engine near the firewall. It'll be almost right in the middle.

2009 Saturn Aura | Answered on Oct 02, 2019


It should be 30mm

Saturn Cars &... | Answered on Oct 02, 2019


If your system is completely empty, it should take 2 small cans or one large. You should also check to see if your system is leaking. Most systems will not need recharging often.

Saturn Cars &... | Answered on Oct 02, 2019


You can try out some guide from here reliable-store. com

they also provide live chat feature for instant help and it's very useful

Saturn Cars &... | Answered on Oct 02, 2019


Second generation cars Chevy, Dodge, Ford,
Have My Doctor degree in all moving parts and entertainment entirely rebuilds from wheel bearings to all of the cars functionality.
Even Dakota Instruments Gages, from transmission to all gauges functionality and wiring up to motor and transmission tail lights and on and on.

Saturn Cars &... | Answered on Sep 30, 2019


Yes there is a pass lock sensor inside the lock cylinder or part of the lock cylinder . Nothing your can do or should do ,computer controlled anti-theft system , you can't disconnect it ,cut it out etc... your vehicle will never start an stay running . If your having a start -run problem ,your best bet ,have a qualified repair shop check it out .

Saturn SC2 Cars... | Answered on Sep 30, 2019


If you don't know what temperature setting the fan sensor is you can call AutoZone and ask about the part. They will be able to tell you what temperature it's set at. I have always found if it us running cooler than it should it will decrease your gas mileage. So Yes if your thermostat setting is to low or Stuck Open it will make I run colder than it should and drop your gas mileage. I have a 92 Yukon and it calls for a 198 to 208 thermostat.
I put a 170 in because I added a performance chip. It runs great but my mileage dropped between 5 and 7 mph. Starting in the early 90s they want vehicles to run hotter. I guess that is suppose to make them burn cleaner. If you haven't changed your thermostat I would do that first. Then if it still runs cold replace the fan switch. Hope this helps you

Saturn Cars &... | Answered on Sep 30, 2019


ESC is what some manufacturers call ESP.

The traction control system uses the wheel speed sensors of the ABS (antilock brake) system but instead of releasing the brake of a wheel that is locking, uses a different programme to apply the brake of a wheel spinning under acceleration. I believe the ESC system is similar in principle but a more refined programme to increase vehicle stability.

Servicing the system is a specialist task requiring access to some sophisticated electronic equipment and somewhere in the process there should be an experienced thorough visual inspection of all the external components.

Saturn Cars &... | Answered on Sep 29, 2019


You can't bypass the security system as it is integrated into the engine management and other systems.

The security system is generally disarmed by a coded transponder embedded in the key. When the key is inserted the transponder and the security system talk to each other and compare codes. If the codes match the engine will start.

I guess your new key either has no transponder or hasn't been coded. There is a possibility if your old key is held very close to ignition steering lock (before fitting the new key) then try to start with the new key and it might work.
Sometimes once the system is disarmed a certain sequence can programme a new key - but that is something you will need to take further advice about.

Saturn Cars &... | Answered on Sep 29, 2019

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