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Old 10-28-2009, 03:02 PM   #1
SC2 93
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Default No Start, 93 SC2 (Got spark and fuel)

So me and my g/f were driving home and stopped to get gas cause she was low. We filled up and started the car and it began to bog for about 20-30 seconds then cleared up and stopped. Monday morning when she went to go to work the car started but ran like complete ****, bogging and had no power. She drove it around the block and got it back home then shut it off. She tried to restart it a few hours later and it never started again. The engine is turning over just it wont fire.

So far I've replaced the fuel filter and cleaned the terminals/connectors. I've checked for fuel by releasing the valve by the fuel rail and I got a good amount of fuel that sprayed out so I'm pretty sure we're getting enough fuel and I can also hear the fuel pump kicking on when the ignition is turned over. I also checked all of the spark plugs and they are all getting spark (they're also brand new spark plugs as well.). The engine is also turning over but it wont fire.

So now I'm stuck and trying to figure out my option. I've been reading that it could be a few things from the CPS, ECTS, to maybe even the timing belt slipped? Its hard for me to believe that the timing belt slipped considering the night before there were no adverse effects. Help Please! Trying to move out sunday and need her car running again.

Last edited by SC2 93; 10-28-2009 at 03:12 PM..

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Old 10-28-2009, 03:39 PM   #2
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Default Re: No Start, 93 SC2 (Got spark and fuel)

Mind posting the mileage? It has some bearing to this post like a possible fuel filter strangling fuel flow.

1-Your Saturn doesn't have a timing belt. It has a timing chain that may be considered if the oil hasn't been maintained over the years.

2-Having spark and fuel has covered almost 90% of the two main issues with lack of starting. The remainder requires removing the spark plugs and examining them for any type of wear and for raw wet gasoline to confirm fuel being injected. Maybe the main injector fuse is blown.

3-Check all the fuses especially the injector fuse if the plugs are dry. Spark on the plugs usually means fuel injectors working except for the rare occasion when an injector fuse blows, for whatever reason, and kills the injectors from working.

4-Presuming high mileage, there may be compression issues and a compression test should be done.

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Old 10-28-2009, 03:55 PM   #3
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Default Re: No Start, 93 SC2 (Got spark and fuel)

Quote:
Originally Posted by fdryer View Post
Mind posting the mileage? It has some bearing to this post like a possible fuel filter strangling fuel flow.

1-Your Saturn doesn't have a timing belt. It has a timing chain that may be considered if the oil hasn't been maintained over the years.

2-Having spark and fuel has covered almost 90% of the two main issues with lack of starting. The remainder requires removing the spark plugs and examining them for any type of wear and for raw wet gasoline to confirm fuel being injected. Maybe the main injector fuse is blown.

3-Check all the fuses especially the injector fuse if the plugs are dry. Spark on the plugs usually means fuel injectors working except for the rare occasion when an injector fuse blows, for whatever reason, and kills the injectors from working.

4-Presuming high mileage, there may be compression issues and a compression test should be done.
The odometer quit working at 176k which was 5-7 months ago. Supposidly the engine in there is a "newer" engine but the guy we got it off of seemed to be a good guy. We just put the fuel gauge on it and got a reading of 42 PSI, does this sound correct?? This was at the hose. We'll check the fuses here in a little bit and go from there just need to locate the problem to fix it this weekend.. Thanks for the help so far

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Old 10-28-2009, 05:19 PM   #4
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Default Re: No Start, 93 SC2 (Got spark and fuel)

42psi is fine. Next check are the fuses, especially the injector fuse.

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Old 10-29-2009, 02:41 PM   #5
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Default Re: No Start, 93 SC2 (Got spark and fuel)

Checked all the fuses and they are all good. Could it be the CPS? An correct me if I'm wrong but the ECTS is located on the top of the engine around the cylinder head and valve cover?? When the ignition is turned over the temp gauge doesnt shoot up to hot, it stays on the cold position.

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Old 10-29-2009, 10:05 PM   #6
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Default Re: No Start, 93 SC2 (Got spark and fuel)

It won't be a cps issue as the spark test rules it out. The cps comes first before spark since the cps turns on the pcm; the pcm's operation depends soley on the ability of the cps to generate steady timing signals otherwise the pcm is effectively dead - no fuel pump operation, no ignition/spark, and no injector pulses. The cps is the equivalent to an electronic heart beat; no heart beat = no running engine possible. Having spark means the cps is working.

Your '93 has two(2) coolant sensors; the one you're describing is the single wire one that drives the temperature gauge while another one below it is the important two-wire one that supplies signal data to the pcm for developing the fuel/air mixtures. If you haven't done it, replace this one immediately with a brass one from any auto store asap. You can use the Forum Jump below to find the How-to library about it. Check to be sure the connector isn't corroded otherwise replace it too.

The tell tale indication of haviing an original faulty coolant sensor is the low temperature gauge reading and erratic engine running issues among other problems. Its also likely that you should replace the thermostat too, with a 195F one. The two parts will allow the engine to run at the true operating temperature that eliminates a host of problems; rich mixtures, flooding starts, hard starts, poor fuel mileage, poor transmission shifts, oil dilution, and premature engine wear.

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Old 10-30-2009, 09:11 AM   #7
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Default Re: No Start, 93 SC2 (Got spark and fuel)

Quote:
Originally Posted by fdryer View Post
The tell tale indication of haviing an original faulty coolant sensor is the low temperature gauge reading and erratic engine running issues among other problems. Its also likely that you should replace the thermostat too, with a 195F one.
Faulty ECTS in a gen-1 car will NOT give a low temp gauge reading (as you said, gauge runs on its own sensor). But indeed, a low gauge reading in a gen-1 car points squarely at a failed-open thermostat.

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Old 10-30-2009, 05:21 PM   #8
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Default Re: No Start, 93 SC2 (Got spark and fuel)

Well we removed the converter and the piping and tried to start it without any luck. So I believe the converter isnt clogged, we also replaced the ECTS with no luck as well. After reading your post FDyer, it seems as if the CPS is not the colprit. Might be worth a try though?? At this point we're completely stumped and aggrevated.

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Old 10-30-2009, 05:25 PM   #9
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Default Re: No Start, 93 SC2 (Got spark and fuel)

See if it'll at least sputter on starting fluid.

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Old 10-30-2009, 07:47 PM   #10
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Default Re: No Start, 93 SC2 (Got spark and fuel)

Any chance you and your girlfriend put diesel fuel in the gas tank?

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Old 10-31-2009, 12:26 AM   #11
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Default Re: No Start, 93 SC2 (Got spark and fuel)

Either pull all the plugs out for inspection or hold the throttle wide open while starting; a flooded engine can short out any spark and if they're wet, dry off the plugs and crank the engine for a few seconds to blow out any raw gas that remains. While they're out check for spark again and replace the plugs.

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Old 10-31-2009, 08:56 AM   #12
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Default Re: No Start, 93 SC2 (Got spark and fuel)

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Any chance you and your girlfriend put diesel fuel in the gas tank?
LoL, I'm positive it was regular gasoline the gas station only had 1 diesel pump thats away from the others.

I'll pull the plugs out and check the gaps and try to get all the raw gasoline out of it. At this point a compression check is going to be done to see where the engine stands. Any other suggestions would be apprechiated.

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