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Old 06-21-2018, 03:25 PM   #41
toomuchsaturn
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1997 SL2
Default Re: Extremely hesitant and no power

Quote:
Originally Posted by OldNuc View Post
The platinum plugs will definitely cause problems that just replacing the plugs will not fix. You probably will need new plug wires and possibly a replacement ignition module if those plugs were in ther long enough.
Thankfully they weren't in there too long. I hope that won't be the case.

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Old 06-21-2018, 05:32 PM   #42
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Default Re: Extremely hesitant and no power

Good find. It was beginning to sound like an ignition problem. Make sure the firing order is correct when installing the plugs.

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Old 06-21-2018, 06:36 PM   #43
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Default Re: Extremely hesitant and no power

Quote:
Originally Posted by Cheyne View Post
Good find. It was beginning to sound like an ignition problem. Make sure the firing order is correct when installing the plugs.
Turns out it still hesitated & felt like stalling but did end up getting power up in the higher rpms. I think OldNuc is right about the ignition module. Mechanic is suspecting it and is going to replace it with a JY one.

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Old 06-21-2018, 06:49 PM   #44
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Default Re: Extremely hesitant and no power

Quote:
Originally Posted by toomuchsaturn View Post
I'm just finding out the car has burnt platinum spark plugs in them. The ones I replaced them with were platinum when I asked for coppers. Turns out that may be the cause of all my problems. I won't be able to drive the car for another hour but I heard platinums on these cars are a nightmare. I just got some autolite copper plugs since NGK Coppers are special order (need to be shipped) at every autoparts store here. I'll update once I'm able to test drive.
Define "burnt" spark plugs....

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"He checks the gas, and fills the oil....."

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Old 06-21-2018, 08:22 PM   #45
toomuchsaturn
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Default Re: Extremely hesitant and no power

Quote:
Originally Posted by Saturn Night View Post
Define "burnt" spark plugs....
See for yourself.
Attached Images
File Type: jpg IMG_20180621_181904.jpg (178.8 KB, 20 views)

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Old 06-21-2018, 08:24 PM   #46
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Default Re: Extremely hesitant and no power

Quote:
Originally Posted by toomuchsaturn View Post
Turns out it still hesitated & felt like stalling but did end up getting power up in the higher rpms. I think OldNuc is right about the ignition module. Mechanic is suspecting it and is going to replace it with a JY one.
Replace the plug wires and then you verify they are all in the right spot.

Ignition wire routing as seen when looking at the engine and coils from the front, hood open, your left to right.

Engine
1-2-3-4

4-1-2-3
coil towers

Connect the matching numbers with a plug wire.

It will run with multiple different routings, only 1 is correct.

RockAuto sells plugs for about 1.60 each so stock up.

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Old 06-21-2018, 08:31 PM   #47
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Default Re: Extremely hesitant and no power

Quote:
Originally Posted by OldNuc View Post
Replace the plug wires and then you verify they are all in the right spot.

Ignition wire routing as seen when looking at the engine and coils from the front, hood open, your left to right.

Engine
1-2-3-4

4-1-2-3
coil towers

Connect the matching numbers with a plug wire.

It will run with multiple different routings, only 1 is correct.

RockAuto sells plugs for about 1.60 each so stock up.
I just bought autolite spark plugs and replaced my old platinum ones. Not sure if you saw my previous ones (just added pic). Car did run a bit better up in the higher rpms but still stumbled & and almost stalled down between 1-3k rpms. We're suspecting the ignition module like you mentioned might be the culprit. It'll be replaced as well as the coils. Firing is correct and I doubled if not tripled checked.

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Old 06-21-2018, 08:57 PM   #48
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1998 SC2
Default Re: Extremely hesitant and no power

After swapping out the module then actually pressure test the exhaust. Any leak will foul up the mixture. To quick check warm up engine then disconnect the front O2 sensor. Be sure to actually let the car sit at idle for 3+ minutes once warmed up fully. If car suddenly runs great you have a mixture problem.

Exhaust leak check.
--Locate a low pressure high volume air source, reversible vacuum cleaner, large fan, leaf blower or what ever you can find.
--Loosely couple to cold exhaust at the tail pipe, or direct fan at tail pipe.
--Spray every inch of the exhaust between the head and CAT outlet flange with a mixture of 2 or 3 drops of dish soap and water in a spray bottle.
--Pay close attention to the lower flange, lower support clamp, and flex connector.
--The flex connector is under the protective braid so it requires quite a bit of solution to show any leaks.

I saw your previous posts, I know what burned out platinum plugs look like.

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Old 06-21-2018, 09:12 PM   #49
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Default Re: Extremely hesitant and no power

Although platinum plugs should not have been in there, those plugs do not show any signs of being burnt. Sooty yes, burnt, no.

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Old 06-21-2018, 09:18 PM   #50
Cheyne
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Default Re: Extremely hesitant and no power

The plugs indicate a lean condition. Could be a leaky exhaust as mentioned by Oldnuc. Has the fuel filter been changed?

Edit: Not to mention that the mechanic indicated a lazy O2.

Last edited by Cheyne; 06-21-2018 at 09:24 PM..

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Old 06-22-2018, 12:12 AM   #51
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Default Re: Extremely hesitant and no power

Quote:
Originally Posted by toomuchsaturn View Post
See for yourself.
Those plugs are showing signs of oil burning and running hot. The type of electrode is the problem with those plugs, which I seen that you already replaced them in a post after the one I am quoting, and I see Nuc already covered the ignition system.

If it is stumbling at lower rpms and the ICM doesn't solve the problem(it should), then the next step is to perform a compression test.

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"He checks the gas, and fills the oil....."

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Old 06-22-2018, 12:13 AM   #52
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Default Re: Extremely hesitant and no power

And like Cheyne stated, get a new O2 sensor. I think Nuc may have covered that, too. Denso or Bosch for the O2 sensor.

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Old 06-22-2018, 07:00 AM   #53
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Default Re: Extremely hesitant and no power

Quote:
Originally Posted by Saturn Night View Post
And like Cheyne stated, get a new O2 sensor. I think Nuc may have covered that, too. Denso or Bosch for the O2 sensor.
OldNuc recommends Denso or NGK. I recall reading that the Bosch are problematic.

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Old 06-22-2018, 10:57 AM   #54
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Default Re: Extremely hesitant and no power

Quote:
Originally Posted by trottida View Post
OldNuc recommends Denso or NGK. I recall reading that the Bosch are problematic.
I may have gotten them mixed up. I have used Bosch without issues, in the past, however I do know they make the actual element in a different diameter from the stock units. I also didn't use the Bosch units in the Saturn engine.

Denso makes OEM replacements, which was what I priced for my header swap, last year.

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"He checks the gas, and fills the oil....."

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Old 06-22-2018, 11:20 AM   #55
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Default Re: Extremely hesitant and no power

Here's what I read from OldNuc

Quote:
Bosch among other manufacturers make what is labeled as a universal sensor. This is a one-size-fits-all device that you get to wire the plug to. They do not function well in most applications and are particularly bad in a Saturn. Several aftermarket suppliers make high quality direct, make/model specific , replacements. Two of which are Denso and NGK/NTK.
Quote:
The Bosh O2 sensor seems to have a slow response when compared to the proper copy of the factory part.

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Old 06-22-2018, 11:28 AM   #56
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Default Re: Extremely hesitant and no power

Denso was the OE supplier for at least some years. Being that the OP may have a CA or 50 state emission vehicle, he may do well to look at the sensor that's in it.

Then determine the most economical way to purchase. It was actually slightly more inexpensive just recently for me to order the AC Delco OE part from RockAuto than the Denso. Part showed up in the AC Delco bag and was identical to the original Denso sensor that I removed.

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Old 06-22-2018, 12:35 PM   #57
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Default Re: Extremely hesitant and no power

I bought a DENSO 234-1022 off eBay for around $22 shipped a few years ago.

Looks like current prices are around $28 shipped.

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Old 07-28-2018, 11:09 PM   #58
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Default Re: Extremely hesitant and no power

Alright yall, so I know I haven't kept up (been travelling out of state and shop had car for about 2 weeks since I got some painting done as well). I'm glad to say my car is now working AMAZING. I don't know what witchcraft my mechanic did but dam does this car feel fast. I haven't felt the engine push me back in a REALLY long time . Now on what he did, I haven't been a able to talk to him but I do know he took it to the muffler shop that didn't find anything to replace the cat. Now I really feel air shoot out the muffler. I also noticed that the car has a deep growl to it and is a bit louder in a good way .Coils were replaced as well as O2 sensors. Now I did notice when I got the car back that my car rattles excessively. If I can recall he replaced the top mount 3-4 years ago and it seems like it's a DEA mount. I'm currently browsing Amazon and am kinda bummed there's no more OEM mount and did read that a seller on eBay has them but for 150 & after shelling out hundreds I don't want to spend too much anymore. I'm kind of torn deciding which to choose. I know there's the westar one's but there are fitment issues and I'm not expert in fixing this. I also found another one where for $53 I get all mounts and reviews are really positive. I don't know which to choose. Does anyone have any info especially for the $53 ones. I attached the link below

K0260 Fits 1992-2002 Saturn SC/SL/SW Series 1.9L Engine Motor & Trans Mount Set 4 PCS : A2827, A2825, A2825, A2826 https://www.amazon.com/dp/B06XDSD9VL..._c1txBbB4B0764

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