Saturn SC

1993 Saturn SC Engine Malfunction When idling Always

hard to start, then always idles very high

Lets start with the easy stuff. When was the last time you did a tune up and what maintenancne was done last. Let me know.. we can fix this. Al

Just a followup to your question, does the problem still exsist or did my assistance help fix the problem? AL

Been 2 weeks and have not heard, did the advice given help get the car running properly. Just a followup. Let me know. Al

This was my sons car, the day I contacted you about the car problem he blew the engine and scrapped the car. I still got charged by all-parts for your reply though? I told them the story but haven't gotten a reply.

Hey Al, maybe you can help me. I need the vacuum diagram for an 87' Suzuki Samuri. The one on the hood is missing. If you can find it for me we'll consider this question completed. Thanks, Randy.

I have looked and found a few variations. Can you give me some specifics on the truck. Engine size, auto or manual tranny, cruise control. THis will all help. AL

"I have looked and found a few variations. Can you give me some specifics on the truck. Engine size, auto or manual tranny, cruise control. THis will all help. AL"

I've been saying I don't need any info on this 1993 Saturn However for the $20 I would like the correct vacuum diagram for my 1987 Suzuki Samuri. The one that's supposed to be on the hood. Can you help me on this?

Sorry,I thought you were still talking about the Saturn. I don't have the vehicle at my location at this time. It is a manual 5 speed transmission, no cruise. I think they only offered one engine that year. I will go look at it on Monday 01/05/03. I'll give you any and all info I find at that time. Let me know if any other info will help. Thanks, Randy

RE:1987 Samuri, The VIN is JS4JC51C[redacted] , still looking for the vacuum diagram pertaining to the carburator assembly & components. Thank You.

This was harder than I thought. Every source I found stated "refer to the lable affixed under the hood of the car". Anyway here is what I found and I will try to be as specific as possible.

There is a 90 deg hose that goes from the secondary actuator (diaphram) to the vacuum swithing valve.

There is a long 90 deg from the vacuum switch valve to a "t" (it attached at the top) the bottom line from the "t" goes to the Carb vacuum fitting (lower) and the side line fromt the "t" goes to the vacuum transmitting valve (looks like a filter with a nipple on each end) from the trans valve to the carb vacuum fitting (upper).

Finally, a long 90 deg hose (long on both ends but even in length) goes from the choke piston to the delay valve (also looks like a filter, smaller of the 2) from the delay valve to the carb vacuum fitting.

Let me know if this helps. I will keep looking for something more specific. Al

Thanks, I'll try this for a start. I think there is more to it. Why is this such a difficult matter?

I have looked for almost 2 months and have not had any luck finding the vac diagram for your truck. I hope you had some luck with the diagram I described to you. Al

1992 Saturn SC Heating / Cooling System Malfunction Happens sometimes 

had A/C on would blow cool then warm, etc. later thought i heard humming so turned it off, when i turned it back on the car wanted to stall so immediately turned off and car was ok again. keep checking and kept getting same result. got home and tried again and this time did not stall out?

5-2-03.

Hello, since you can effect the problem by turning 'off' the a/c I believe your a/c compressor may be trying to lockup and fail. When you turn on the a/c, if the compressor is requiring alot of effort to turn, the engine will stall. Turning the system back off eliminates the internal workings of the compressor from the equation of horsepower demand attributable to what is being turned by the belts when the engine runs.

A/C compressors develop alot of heat. If they are turned off after running awhile, they will cool down and may work fine 'til the heat rises again.

Compressors get their lubrication when the freon in the system immulsifies (carries) the oil in the system in circulation. Low freon means impaired lubrication and the compressor fails. Systems that have been in service for years fail from normal wear even though they are full of freon. The wear causes low pressure, low pressure means poor circulation of lubricant..the compressor fails.

Questions?

Roger

5-7-03.
I'm looking forward to your response, it's been a few days...

Thanks,

Roger

1992 Saturn SC Drive Train / Driveline  When driving 

the D2 light came on today and car was shifting hard (an automatic) what would cause this? and will it be expensive to fix?

Hello, have your alternator checked under a heavy load and see if it is ok. (probably not) The D2 light and rough shift are coming from a low voltage condition. This is a common event for Saturn. So before you think I'm a nutball, check the alternator under load and if it's ok, we'll go from there. If the alternator is bad, replace it and you should be done.

Roger

What is the status here, please?

Roger

May I hear from you, please? Thanks!

Roger

Hello? Will you please update this question status?

Thanks,

Roger

Are we finished here? Please update.

Thanks,

Roger

1992 Saturn SC Ignition System   

car quit on daughter,towed it home,changed fuel tank,pump and filter,fuel pressure regulator, crankcase sensor. doesn't get electric to fuel injectors / If I unplug #1 and 3 injectors it will try to start but with all four plugged in nothing.help

Hello, With the key in the on position you should have 12 volts DC on one of the two wires in each injector connector. Do you?

From what you said I'm believing you have spark. Have you tested each plug wire?

Is there reason to suspect the exhaust is restricted? Did the car begin losing power as it warmed up and lack acceleration?

Roger

have 12 volts in both wire on the injector plug,exhaust is clean and new. checked xoil and have 12 volts there also. I have no idea on what is wrong.

Are you testing the wires in each injector connector while it is disconnected? That would be the correct way if you do not have a noid light to test for injector pulse from the computer when the engine is cranking.

Do you have a digital multi-meter to test for injector pulse?

Roger

I used my volt meter with a motor ground and tested each wire while disconnected Have 12 volt in both wire end of plug in for injector. Couldn't get any light on the NOID when cranking but it will try to run for a few rev on 2 cyl connected only and nothing on all four.If I wasn't bald I would pull my hair out.Have spark going to plugs when cranking

Is your engine a SOHC or DOHC?

Roger

DOHC Today my neighbor came with a test lite,connected to ground of battery and plugged it into the drivers side of #1 injector, the other 3 were connected and the car started right up and ran on 3 cyl.If I plugged the lite into the other pin of #1 connector it would die.Won't even fire with all four connected

Interesting event you have there. If #1 injector is left disconnected and nothing is grounding either wire for #1 injector will the engine start and run on three cylinders? Could #1 injector be a bad one?

Was the test light plugged into the Pink/Black wire of #1 injector connector or the other wire?

Roger

test lite pink and black wire. tried to use #2 inj. wire and car wouldn't fire. replaced ground cables from batt/ to motor and to body ground,no difference. test lite in #1 inj will start car but not any of others I pulled the PCM module and saw that it has already been replaced so I am calling about another one tomorrow.It is supposed to make the ground for inj to fire.

Yes, the PCM provides ground pulse for the injectors to fire. Thats where I was headed with this until you said grounding the Pink/Blk on #1 injector connector would result in the engine running on three cylinders. That would lead me to believe the PCM is capable of pulsing ground to the remaining injectors. But what the devil is wrong with the PCM circuit board for the number 1 injector.....?

Does #1 injector resistance compare to any other injector resistance? All injector Pink/Blk wires are spliced to the same voltage supply source.

Thinking out loud,

Roger

you folks are a ripoff. my 2 year old grandson could have done better than the so called mechanic. Even thinking of cancelling the credit card payment for no help

To receive a refund please write to All-Parts.com, Administrator, All-Parts.com and make your request known.

I will write to the administrator as well to recommend he cancel and refund your question.

Roger