Quite a weekend for me and car maintenance. Are OEM the way to go? Are some aftermarkets more reliable than others? I noted they vary in price. If I do have a bad coil, I'll replace them all. If it's a bad coil rather than a plug, I'll get a misfire somewhere else. So, I'll be replacing the plugs and just in case moving the ignition coil to another cylinder. Hopefully this is the cause of the hesitation under load. I pulled up the code, it's a P0301, cylinder #1 misfire. It hadn't done this before, or at least if never saw it. But this time after I had got on the highway and need to pass a slower vehicle, it hesitated a bit and the check engine light started flashing and turned off. It was doing its normal periodic hesitation on the way to work. So hopefully a local GM dealership with have service history. It looks like the car was regularly service at a Buick dealership. I need to try to see if the wave plate was ever addressed. Both looked good and had the proper levels. The day after I bought the car, I changed the oil and transmission fluid. I've been using 87 octane, but I need to get gas today, so I'll fill it up with 89 and continue to use that.If some of the easier things don't check out, I'll definitely look into cleaning or replacing the injectors.Just went out and checked the brake booster hose, seems good.From what I can find, OEMs are AC Delco 41-990. Plus it might just need it, more on that below. I check the spark plugs, I'll probably just replace them since I'm pulling them out anyway.Currently at 145K and will wait until this Summer or next Spring to do it again. First time was at 104K (bought used at 56K and "never got around" to doing it ), then again at 127K. I used full synthetic fluid in mine with no issues. Consider doing it 2 or 3 times, one at each oil change until both or all 3 are accomplished, then do it again in another 30-50K miles. You should get about 4-5 quarts each time. On the V6 there's the convenience of a cap-and-dipstick for filling, and on the bottom there's a small unmarked and unremarkable-looking plug you can use to drain it. I'm not sure why 89 was higher, but those are the numbers I recorded.Īdditionally, you would be wise to consider draining and filling your transmission fluid. Last summer (2019) during the hot and humid days, I used BP 93 for 9 tanks. Except for extremely hot and humid days, I use TT 89 or higher, depending on availability. In my first and my second 2011, using 87 was less noticeable. When I tried 91 there was no performance increase, but it cost more so I went back to 89. I could tell the difference when I tried 87. As for octane, the 3.6L in my 2009 delivered top power and mileage with Chevron 89. Also, ask the previous owner (if possible) what they had been using. If you've never heard of it, Google "Top Tier Fuels" and then start using them if you haven't been. The octane and type of fuel could also lead to your issues. Fuel injectors - may need cleaned chemically.Brake booster hose and fittings - check, clean, and/or replace.PVC tubing and orifice(s) - inspect and/or clean.Spark plugs - check condition of 1 or 2, or replace if last replacement unknown.MAF - clean or replace (with OE brand) check wiring for issues especially where there are any tight bends.Other times I have to briefly let back on the throttle and them get it more and it goes.īefore doing anything at all, I'd start with all the unknowns: If I continue giving it throttle, sometimes it will stumble a bit then accelerate. At lower speeds and flat ground, acceleration is ok. Also if I give it increased throttle at highway speeds to pass. Engine occasionally bogs under load and driving up hill. RPM fluctuates a couple hundred RPM with a slight vibration. I've been having issues and think it may be one or more of the VVT solenoids. Carfax shows a huge list of maintenance records since the car was new, but nothing specific to whats been done. Inside and out is in immaculate condition. Just purchased the car a few weeks ago from the original owner. But there's not much support on the Saturn forums, so I figured I'd try here. I actually have a 2007 Saturn Aura XR with the 3.6L engine.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |