Question about 1991 Saturn SL2

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1991 saturn dohc

I have no power at fuel injectors

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  • mary allman May 11, 2010

    did you check fuses ?

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I just had a similar problem. Mine ran for a while and then would shut off while driving and not start again for a few days. I changed the computer out and have not had a problem since.

Posted on Oct 12, 2009

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Check all fuses. But Most Notably the IGN4 30 amp green fuse. If all fuses are good. trace the wires going to your fuel rail and make sure that they arent cut or broken.

Posted on May 23, 2009

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    Chris May 23, 2009

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I need a wiring diagram for a 91 Saturn SL. DOHC? Injection and sensors. I unplug #1 injector it runs I plug it in it dies.


I would ohm check the injectors with a multi meter. If the #1 injector is significantly different than the other three than you found the problem. The other possibility is the dark green wire is shorted to ground. All the injectors are supplied power by the pink with black wire. Each injector is then controlled by the pcm. If the dark green wire is not shorted to ground than a noid light would be needed to see if the PCM driver for that injector has failed allowing the injector to stay permanently on and essentially flooding the engine until it stalls.

Oct 09, 2016 | 1991 Saturn SL

1 Answer

1991 Saturn dohc 1.9 turns over tries to start then dies. we've replaced fuel pump,coils,battery all the sensors,fuel pressure regulator.


Find someone that knows a little about engines, Tammy. It's a 91. First is to check the engine. Compression. After that , check timing, oil pressure. Then go to tune up. Sorry to say, but you probably wasted money on a bad engine.

Jun 11, 2015 | Saturn Cars & Trucks

2 Answers

Have a 1997 saturn dohc,,runs for 10 min,and shuts down,,wait 15 min starts right up and runs 10 more min have replaced coil and ecu,,


Check resistance across each of your fuel injectors.Assuming an sl2,resistance should be 11.5 to 12.5 ohms. Measure after it shuts down. You are looking for one that has low resistance. This is not for sure, but it's a good thing to eliminate.

Oct 22, 2011 | 1997 Saturn SL

1 Answer

Does the 1991 saturn have individual fuel injectors


if you look along the intake manifold where its mounted to the engine there should be 4 individual sensor looking components(one for each cylinder) with a 2 wire connector fastened to them,then you have multi-point injection(one injector for each cylinder).if not then you have what is called throttle body injection which is one body with 1or2 injectors that supply fuel to all the cylinders.this looks similar to a small carburetor located in the center area of the intake manifold were all the intake runners come together.

Jun 13, 2011 | 1991 Saturn SL1

2 Answers

Gentlepersons... have 1992SL1 engine died... gong to replace it ,,, but all involved want to know engine type dual cam? vs ? ... can you tell me how to determine whats in the car now.. vin# nails it...


That is pretty easy. If your Saturn is an SL1 it is single cam if it is an SL2 it is dual cam. That is the only difference between an SL1 and an SL2 - Saturn didn't even bother to put a tag or emblem anywhere on the body to differentiate between the the two models. The 8th digit in the VIN will confirm this for you. If the 8th digit is "7" it is a Dual Overhead Cam (DOHC) engine. If the 8th digit is a "9" then it is a Single Overhead Cam (SOHC) engine. When you have seen both engines, it is pretty obvious by simply looking at them. The DOHC cam cover is much wider and has 2 "humps" with spark plugs and wires going down the center between the humps. The SOHC cam cover is narrow and the plugs and wires go down one side.

Also in the 1992 model year, the DOHC engine was equipped with Multiport Fuel Injection. (MFI) The fuel injectors (4 of them) were located in the top of the intake manifold. The SOHC engine had Throttle Body Injection (TBI) The two injectors were located in the throttle body.

I don't have any pictures of the cam covers, but I have pictures of the cam cover gaskets (AKA Valve Cover Gaskets) you can very easilly see the difference.


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Apr 28, 2011 | 1992 Saturn SL1

2 Answers

I need to replace the #2 fuel injector. Is this something a layman such as I can accomplish?


You could do it, but remember gasoline is flammable and volatile and can be hazardous to work with: REMOVAL AND INSTALLATION 1.9L Engines
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Properly relieve the fuel system pressure.
  3. Remove or disconnect the following:
    • Negative battery cable
    • Fuel rail
    • Fuel injector retaining clip off the injector
    • Fuel injector
    • Fuel injector O-rings and discard them Fig. 1: Fuel injector identification-1.9L engine 9306zg58.gif
    To install: NOTE: The SOHC and DOHC fuel injectors are not interchangeable. The injectors are identified by a color coded plastic ring near the bottom of the injector. The SOHC injector has a blue ring near the O-ring that mates to the intake manifold and the DOHC has a pink ring.
  4. Lubricate the new fuel injector O-ring with clean engine oil.
  5. Install or connect the following:
    • New O-ring seals on the fuel injector
    • Retaining clip to the fuel injector
    • Fuel injector to the fuel rail
    • Fuel rail
    • Negative battery cable
  6. Start the vehicle and check for leaks, repair if necessary.
2.2L and 3.0L Engines
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Properly relieve the fuel system pressure.
  3. Remove or disconnect the following:
    • Negative battery cable
    • Fuel rail
    • Fuel injector retaining clip off the injector
    • Fuel injector
    • Fuel injector O-rings and discard them
Fig. 2: Remove the retainer clip from the fuel injector - 2.2L and 3.0L engines 9306zg59.gif
To install:
  1. Lubricate the new fuel injector O-ring with clean engine oil.
  2. Install or connect the following:
    • New O-ring seals on the fuel injector
    • Retaining clip to the fuel injector
    • Fuel injector to the fuel rail
    • Fuel rail
    • Negative battery cable
  3. Start the vehicle and check for leaks, repair if necessary.
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Feb 14, 2011 | 1999 Saturn SL

1 Answer

1995 Saturn SL2 DOHC motor No start fuel injector issue.


i would have to say first check the fuel injectors fuse in the under hood fuse block if blown replace it,sometimes the fuel injector harness rubs thru anywhere from where the harness comes thru the firewall all the way up to the injectors,,,if fuse is good and no bare wires to injectors,check the wires to the ignition module,,,,and if all checks ok,i would replce the ignition module,,you could have spark from it but it could not be sending the signal back to the pcm to fire the injectors,,,and if all that fails try a pcm,but i think youll find it before that,,i seen this 3 times and each time it was a wire rubbed thru near the fuel rail and it grounds out and blows the injector fuse,
hope this helped

Oct 15, 2009 | 1993 Saturn SL2

1 Answer

Trying to remove the starter on a 1991 SaturnSL


no there is not a special tool need more info go to collisionrepairadvice.com for more
1991 Saturn SL L4-1.9L DOHC VIN 7 Vehicle Level a_003366.gif Starting and Charging a_003366.gif Starting System a_003366.gif Starter Motor arrow1.gif Service and Repair arrow2.gif blnk_spc.gif Service and Repair Notes
  1. Disconnect battery ground cable.
  2. Remove air inlet tube and fresh air hose, on DOHC models, lift resonator upward to disengage from engine support bracket.
  3. Remove upper starter attaching bolt through access hole near intake manifold support bracket.
  4. Raise and support vehicle.
  5. Using suitable pliers, remove starter shield pin, then lift shield upward to release from solenoid.
  6. Disconnect starter electrical connectors and position aside.
  7. Remove lower starter attaching bolt.
  8. Remove rear starter support bracket attaching bolt.
  9. Rotate starter until bracket clears axle shaft support bracket, pull rearward toward lefthand side of vehicle to remove.
  10. Reverse procedure to install. Torque starter attaching bolts to 26 ft. lbs., starter bracket bolts to 22 ft. lbs. and starter solenoid terminal to 3 ft. lbs.

Apr 11, 2009 | 1991 Saturn SL1

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