Last post on Dec 09, 2013 at 1:39 PM
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Saturn S-Series, Auto Repair, Sedan
#149 of 238 high idle and vibration
Feb 25, 2009 (4:42 pm)
I have a 1997 Saturn SL1 5 speed manual. When i start it in the morning i get a loud annoying vibration coming from the engine when its cold, and i have a idle problem where the idle shoots up when i change gears, worse when it's cold. anyone know why i'm having this problem? the car has good pick up and has no kind of hesitation when i give it gas. i have 154,000 on the car. also after driving awhile when i shut it off for a few minutes and go to start it, it stumbles and stalls once. not always but most of the time. hmm?
#150 of 238 96 saturn sc2 w/ 1.9 dohc
Mar 04, 2009 (11:38 am)
#3 exhaust valve replacement i have c clamp and top and plier style valve spring compressors none will work because of the extra housing design on the exhaust side where can i find one that works on this engine?
#151 of 238 Saturn 1997 SL1 ECTS
Mar 09, 2009 (5:24 am)
Hi, I had a problem with rough start,high idle,had to floor gas pedal to start sometimes.I saw on a forum to replace the engine coolant temp sensor.I got
one at autozone for $10.50 and installed it,took 5 mins.This did not help at all.
I then replaced pcv valve,plugs and wires (they were due to be replaced anyway)
also the O2 sensor.Car ran better but still had same problem starting.Took car
to have engine diagnose.Turns out the temp sensor I put in was after-market,
and Saturn had made an upgrade,I needed the temp sensor with the upgraded
cable harness from Saturn,cost $60.00, $170.00 for diagnose and labor.Now car
starts and idles great.Suggest calling Saturn about replacing the ECTS.
Mar 09, 2009 (7:36 am)
Car pain in ass--replace all sensors same symptoms only worse-surged to 50 mph -if antifreeze level down it can do that plus rough starting. Sticking--found out egr valve needs cleaning or replace. Carbon a problem it builds up fast. po404 code cost about $ 100 and clean throttle body too. Why does carbon keep bulding up in egr? Bpb B
#153 of 238 Re: 97 saturn [rbillieux]
Mar 09, 2009 (5:59 pm)
Carbon builds up in EGR b/c the 1.9L motor likes to burn oil. Its an easy fix - take it off, toothbrush to the pintle & make sure it moves easily up and down - spray it with carb cleaner if needed to get the carbon off and replace it - do it once every 6 months and you'll never have a problem. Don't let the mechanic sell you a new EGR.
#154 of 238 1994 Saturn SC idling
Mar 09, 2009 (7:06 pm)
I've owned a lot of cars, but never a Saturn. We ran across one that looks like it's right off the showroom floor, runs like a top. The only thing is it is idling at about 1100 and is normal when moving. I looked this up and it said to set to 450-650 and I found 4 things that could cause this. Would you recommend just resetting the idle speed or what?
#155 of 238 Re: 97 saturn sl [rbillieux]
Mar 10, 2009 (7:02 am)
If you still have car make sure you install the engine coolant temp sensor with the
Saturn upgrade and cable harness.I installed a $10.00 autozone ECTS and it didn't work right.When the upgraded one installed (get it at Saturn) my problems were solved,rough start and high idle,alot of smoke coming from exhuast.
#156 of 238 Spark Plug choice
Mar 29, 2009 (8:01 pm)
About a year ago I purchased a used 96 SL sedan with SOHC engine and 5 speed. Did some basic maintenance, coolant flush, new plugs (Bosch Platinum 4s) and wires, new tires, muffler, and minor TLC. For most part, LOVE the car and drive it enthusiastically (i.e. don't follow the upshift light, rev above there regularly). When I took the car to a mechanic for a tuneup (after my work and repairing two minor exhaust issue/leaks), I was surprised when the mechanic told me the Bosch plugs were TOO HOT for the engine, and he, without my approval, replaced the new Bosch 4s with OEM type plugs (ACDelco, may be single electrode platinum) then tuned it.
From some research I did prior to purchasing the Bosch plugs (and after consulting coworkers/mechanics at the local auto center where I work PT), I can see where the Bosch plug may burn somewhat hotter than an OEM, simply because it produces a more uniform burn "kernel" at ignition, thus being more efficient and producing more power (and heat) for the same amount of fuel. I understand that the heat range of a plug is important to the overall performance and longevity of an engine. Was I wrong to assume that the Bosch plug specified for my vehicle would be the same heat range as the OEM plug? If "yes", why would Bosch do so if it may damage the engine parts, in the long run? Should I switch back to the Bosch 4s, or something in between the OEM and the 4s, say Bosch Platinum 2s?
Sorry for being long-winded.
BTW, I'm new to this forum and really appreciate the depth of knowledge here. I'm a shadetree mechanic and appreciate my car for the relative simplicity of many repair tasks. Will be replacing the primary O2 sensor tomorrow as I, just today, had my car send me the P0133 code.
Thanks again for all of the wisdom this board contains!
#157 of 238 2001 Saturn SL1
Apr 10, 2009 (9:29 am)
Hey all, my SL1 has ~87,000 miles and is starting to make a lot of noise. No check engine light, doesn't seem to burn oil, drivability is the same as always. By the sounds of it I may have a similar problem to lilbirdy and elyons on page 5, but there wasn't an apparent resolution posted here.
So the sound kicks in around 20mph and maxes out around 50mph, and gets a little less noticeable at higher speeds (or maybe just the usual sound of rushing air at highway speeds drowns it out.) It's completely uncorrelated to how high the revs are, what gear it's in, turning corners, etc. As elyons said it seems to be coming from just on the other side of the dash, a little bit on the driver's side of the vehicle. I would describe it as somewhat similar to the regular engine sound but louder, and with a rougher vibrating sound to it. I changed my spark plugs a couple months back just as regular maintenance; the sound wasn't apparent at the time. Another thing I've noticed lately is improved fuel economy. I commute on the highway and monitor my gas mileage closely, always have been around 42mpg but lately it's been closer to 47mpg! That's great and all but I'm wondering if it's running too lean? Another habit I've had in trying to get great mileage is putting it in neutral on long, downhill stretches on the highway. Is there any way that could be impacting this?
Another thing I'm not clear on, will a scanner produce any codes if the check engine light isn't on? Any input would be much appreciated, I've already learned a lot from all the previous discussion.
#158 of 238 1997 saturn wont start when a/c on
Aug 22, 2009 (8:36 am)
1997 saturn wont start when a/c fan and a/c buttons are on position can start first time in morning a/c can be left on position and fan can be left on . but once the car is running for a while with a/c on can not restart car unless i shut a/c down and turn fan off help. i was told it needed a fuel pump,fuel filter, alternator(generator) etc.etc. its just a pain to have to shut fan and ac off before i can start it or not use the /ac in florida noway.