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Old 08-22-2017, 09:04 PM   #21
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Default Re: 2000 Saturn Ls1 Fuel sending Unit

Aw, fiddle-faddle! So if I want a bigger fuel tank then the exhaust system has to be altered also...rats!! Thanks for pointing that out, 02 LW300!

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Old 08-22-2017, 10:10 PM   #22
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Default Re: 2000 Saturn Ls1 Fuel sending Unit

Yes, but with a little work the 3.0l "big block" exhaust works. 1/4" larger pipe and twin tailpipes on the muffler. The smog Nazis in your state will never notice! LOL.
Andy

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Old 08-23-2017, 05:40 PM   #23
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Default Re: 2000 Saturn Ls1 Fuel sending Unit

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Originally Posted by pierrot View Post
No, not so and...

...no; not unless one presumes that the OE part cataloging is misleading their parts sales people and us as well. Please recheck the parts catalogs for the fuel pump assemblies. Both OE and after market catalogs agree that these parts are not shared between M.Y. 2000 and '01 to '05.

New fuel tank senders are available for '01 to '05 model years only, according to the OE cataloging. If the OP wishes to utilize a later model fuel pump assembly and fuel tank sender, then a replacement fuel tank and straps for later model year sedans had better be purchased as well. The fuel tank pressure sensors are the same for all model years. The difference in pump assemblies and tank senders is due to the increased capacity of the later model fuel tanks. The fuel tank capacity was increased after M.Y. 2000 from 13.1 gals. to 15.7 gals. (I would like to have a larger fuel tank, but, for the time involved in changing it out, it's not worth the effort [at least not until the factory installed fuel pump dies out on me]).
Yes, some bad information on my part. My mistake. Thanks for the correction.

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Old 09-12-2017, 04:08 PM   #24
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Default Re: 2000 Saturn Ls1 Fuel sending Unit

Everyone so I found the sending unit .. got everything installed
The sending unit is working fine
But the car now cranks but won't start -- we tested fuel pressure
Which is not reading anything but their is pressure or gas in the fuel rail.

I know I know I should have let a profession do it but ....... any how can someone tell me what they think is going on

Checkedfueses
Check relay
Changed battery
Check starter


The car kinda sounds as it would when u need a jump off

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Old 09-12-2017, 05:22 PM   #25
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Default Re: 2000 Saturn Ls1 Fuel sending Unit

While you were intent on repairing the fuel sending unit and the fuel tank was down for repairs, this would have been the opportunity to ensure everything was working before attaching the fuel tank clamps, temporarily holding up the fuel tank and turning on ignition and possibly starting before securing the tank. Now that you have a fuel issue, the fuel pump, wiring connections and ground need to be checked. With zero fuel pressure at ignition on time (pump runs for two seconds if engine isn't started), you'll need either keen observation or a fuel pump gauge (borrow one from AutoZone or Advance Auto). At ignition on time, engine off, you can depress the fuel test valve and see if fuel sprays out with force. Expect 39-49 psi. Cover with a rag to soak up fuel spray. No fuel coming out?

1-Fuel filter replaced at 100k miles?

2-If you are comfortable with electrical wiring, you can remove the fuel pump relay (presuming fuel pump fuse isn't blown), familiarize yourself with relay pinouts labeled on almost every relay, and wire a short jumper across relay terminal sockets 30 and 87. This sends 12v to power the fuel pump immediately, regardless of ignition switch position. You should hear a faint hiss from the engine area, a hum when pressing an ear to the rear quarter panel, pressing an ear to the butt handle of a long screwdriver pressed to the fuel tank (mechanics stethoscope). No pump sounds = faulty wire to pump, faulty pump, faulty pump ground wire.

A fuel pressure gauge can help you visualize whether or not the pump is running. The pump runs for two seconds with ignition on engine off, and runs only when starting or when the engine is running. No engine running = no pump operation, a built in safety.

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Old 09-12-2017, 07:51 PM   #26
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Default Re: 2000 Saturn Ls1 Fuel sending Unit

Thank you for responding and we rented a fuel pump gauge. The line did not move at all so it did not give us a psi

depressed the fuel test valve and see if fuel sprays out with force. ? We did that and Nothing

.but it did spray out with out the test valve

1-Fuel filter replaced at 100k miles? Don't know what the miles are because it is broken

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Old 09-12-2017, 07:56 PM   #27
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Default Re: 2000 Saturn Ls1 Fuel sending Unit

Please edit, use spell check. Your last reply is confusing. Did you have fuel spray out the fuel test valve or not?

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Old 09-12-2017, 09:07 PM   #28
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Default Re: 2000 Saturn Ls1 Fuel sending Unit

Hey it did not spray out with the tool attached but it did spray out with out the testing tool if that's better

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Old 09-12-2017, 11:40 PM   #29
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Default Re: 2000 Saturn Ls1 Fuel sending Unit

Ok, a better explanation. No pressure when a pressure gauge is connected but fuel sprays out when manually depressing the test valve. This may mean the pressure gauge or fitting on the end of the hose is faulty. While not helpful, a fuel pressure gauge operates exactly like a tire pressure gauge except fluid is under pressure to move the needle. Either try another pressure gauge or have someone at the store check it on a different car. Your choice. Its always helpful to use a pressure gauge to know what pressures are generated. Spark and fuel are two parts needed to make an engine run. Air is the third ingredient.

There's another method to try if you think fuel under pressure is working; spraying starting fluid into the throttle body and trying another start. Without knowing if fuel or spark is missing while starting, spraying starting fluid into the throttle is a guarantee that you put fuel into the opening of the throttle. The engine should start up. If it does start up, a fuel problem exists. If the engine doesn't start up, there's a problem with spark.

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Old 09-13-2017, 10:30 AM   #30
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Default Re: 2000 Saturn Ls1 Fuel sending Unit

Ok thank you so much for responding I will post back with a resolution.

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Old 09-22-2017, 07:10 PM   #31
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Default Re: 2000 Saturn Ls1 Fuel sending Unit

NO Luck

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Old 09-22-2017, 07:12 PM   #32
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Sad Re: 2000 Saturn Ls1 Fuel sending Unit

No luck

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Old 09-22-2017, 07:34 PM   #33
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Default Re: 2000 Saturn Ls1 Fuel sending Unit

No luck means what? Discussions requires communicating in a way to convey one person's thoughts to another and the other person responding. If you provide two words to sum up many questions and suggestions, how can you expect help? I cannot help you by second guessing two word sentences.............

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Old 09-24-2017, 07:36 PM   #34
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Default Re: 2000 Saturn Ls1 Fuel sending Unit

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No luck means what? Discussions requires communicating in a way to convey one person's thoughts to another and the other person responding. If you provide two words to sum up many questions and suggestions, how can you expect help? I cannot help you by second guessing two word sentences.............


Iím sorry Iím just all over the place trying not to give up on it .. but we did they starter spray and still no crank we had an machanic come out and he tested the spark and says it was good and the pressure finally reading 50psi/ the machanic that come out said we should change the fuel rail it could be clogged up .. no one seems to want to even touch a Saturn now a days. So what do yíall think about chasing the fuel rail ?

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Old 09-24-2017, 08:22 PM   #35
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Default Re: 2000 Saturn Ls1 Fuel sending Unit

When you say "no crank" do you mean it the engine wont turn when you hit the key to turn the starter or the engine will not start when it is turning over?
If you tried starter fluid while the engine is turning and your mechanic indicated spark but still no start then a compression check would be next in line before messing with the fuel rail.

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Old 09-24-2017, 08:34 PM   #36
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Default Re: 2000 Saturn Ls1 Fuel sending Unit

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Originally Posted by Dsaturn View Post
When you say "no crank" do you mean it the engine wont turn when you hit the key to turn the starter or the engine will not start when it is turning over?
If you tried starter fluid while the engine is turning and your mechanic indicated spark but still no start then a compression check would be next in line before messing with the fuel rail.

Thanks for replying ..
It turns over but will not start wish I could post this video so that u can hear the sounds .
(Not sure if that will help) but I will mention a compression check thanks

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Old 09-24-2017, 08:41 PM   #37
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Default Re: 2000 Saturn Ls1 Fuel sending Unit

The compression test will tell if the timing chain is still good. As far as people not wanting to work on a Saturn, the 2.2 is the standard GM 4 cylinder engine after 2001. My granddaughter's 2002 Oldsmobile Alero has the same 2.2L Ecotec engine. They are in Malibu and Grand am also.

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Old 09-24-2017, 09:07 PM   #38
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Default Re: 2000 Saturn Ls1 Fuel sending Unit

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Originally Posted by 02 LW300 View Post
The compression test will tell if the timing chain is still good. As far as people not wanting to work on a Saturn, the 2.2 is the standard GM 4 cylinder engine after 2001. My granddaughter's 2002 Oldsmobile Alero has the same 2.2L Ecotec engine. They are in Malibu and Grand am also.
Thanks for your reply the timing chain was replaced back prob two years ago when I got the heads redone I hope thatís not the issue

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Old 09-24-2017, 09:39 PM   #39
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Default Re: 2000 Saturn Ls1 Fuel sending Unit

The mechanic suggesting fuel rail replacement is stalling because he doesn't have a clue and may be trying to take advantage of your situation to make money without fixing the problem. Unfortunately there are many shops and dealers with dishonest intentions. Fuel pressure seen on a fuel pressure gauge connected to the fuel rails means no obstruction and no replacement needed.

One person says no spark and another says spark is seen. Which is it? A spark test is easy to perform; after noting plug wire firing order, removing them from the ignition coils allows you to observe for spark across both coils as someone tries starting. As the engine turns over, spark should appear across both coils to verify spark is generated. Do you see spark or not? Presuming spark plug wires aren't damaged, wires should conduct spark to each spark plug. This takes care of the ignition system. Fuel is another part of the electronic fuel injection system.

Fuel pressure is needed to allow injectors to pulse and spray fuel into each cylinder. After several failed starting attempts with the engine turning over but never firing up, removing the spark plugs should reveal wet spark plugs as indication of fuel under pressure being sprayed by operating injectors. Do you see or smell fuel on each spark plug?

The descriptions of troubleshooting EFI problems is simple without requiring advanced knowledge.

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Old 09-24-2017, 10:33 PM   #40
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Default Re: 2000 Saturn Ls1 Fuel sending Unit

Quote:
Originally Posted by fdryer View Post
The mechanic suggesting fuel rail replacement is stalling because he doesn't have a clue and may be trying to take advantage of your situation to make money without fixing the problem. Unfortunately there are many shops and dealers with dishonest intentions. Fuel pressure seen on a fuel pressure gauge connected to the fuel rails means no obstruction and no replacement needed.

One person says no spark and another says spark is seen. Which is it? A spark test is easy to perform; after noting plug wire firing order, removing them from the ignition coils allows you to observe for spark across both coils as someone tries starting. As the engine turns over, spark should appear across both coils to verify spark is generated. Do you see spark or not? Presuming spark plug wires aren't damaged, wires should conduct spark to each spark plug. This takes care of the ignition system. Fuel is another part of the electronic fuel injection system.

Fuel pressure is needed to allow injectors to pulse and spray fuel into each cylinder. After several failed starting attempts with the engine turning over but never firing up, removing the spark plugs should reveal wet spark plugs as indication of fuel under pressure being sprayed by operating injectors. Do you see or smell fuel on each spark plug?

The descriptions of troubleshooting EFI problems is simple without requiring advanced knowledge.

Thanks for the response ..Im not sure if I was clear or not but only one person said it was spark .. but he did say the plugs were dry like it was nothing getting to them

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