Lag/hesitation on 1st gear acceleration? - Saturn Sky Forums: Saturn Sky Forum
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post #1 of 14 (permalink) Old 04-20-2019, 04:01 PM Thread Starter
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Lag/hesitation on 1st gear acceleration?

Hey all,

I get a 1 sec lag/hesitation when accelerating in 1st gear. Not sure if it happens often in 2nd gear. .......Not sure I have ever really noticed this before.
It's more pronounced in first gear for sure.

Is this normal?
No codes thrown.

- Old school turbo lag?
- Something fuel related?
- Plugs/electrical?
- clutch slipping (I may need a new clutch)?

Otherwise, the car runs like a boss!!

Thoughts/suggestions?

Need4Speed2
SF, CA
2008 Redline, 89k miles
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post #2 of 14 (permalink) Old 04-21-2019, 09:11 PM
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Would have to see a scan to see what the car is doing to give you a better idea of what you're experiencing.
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post #3 of 14 (permalink) Old 04-24-2019, 10:28 PM
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post #4 of 14 (permalink) Old 05-09-2019, 06:00 PM Thread Starter
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Originally Posted by SaturnFov View Post
I scanned for codes before (nothing showed) but for $26 this may be a good investment.

Could it be a bad plug too?

Thanks!

Need4Speed2
SF, CA
2008 Redline, 89k miles

Last edited by Need4Speed2; 05-09-2019 at 06:34 PM.
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post #5 of 14 (permalink) Old 05-11-2019, 05:19 PM
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I've had the same problem on my '07 RedLine since purchased with 3,000 miles, some eleven years ago. It now has 24,000 miles. Mine is an automatic, but exhibits the one second lag as soon as I accelerate. I had it at the dealership twice. First they denied feeling it, then backed off when we took a second RedLine out. Their solution was to add a can of injector cleaner to the fuel tank. I've learned to live with it. Will be interested to see if anybody else has a solution.
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post #6 of 14 (permalink) Old 05-12-2019, 05:29 PM Thread Starter
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Originally Posted by SaturnFov View Post
Get one of these to pull your error codes. They are invaluable.


My guess is an ignition coil though.
After some research, you may be right, ignition coil.....

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post #7 of 14 (permalink) Old 11-24-2019, 11:48 AM
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Quote:
Originally Posted by kplange View Post
I've had the same problem on my '07 RedLine since purchased with 3,000 miles, some eleven years ago. It now has 24,000 miles. Mine is an automatic, but exhibits the one second lag as soon as I accelerate. I had it at the dealership twice. First they denied feeling it, then backed off when we took a second RedLine out. Their solution was to add a can of injector cleaner to the fuel tank. I've learned to live with it. Will be interested to see if anybody else has a solution.
Did you ever figure this out? Same problem here, if I ease into the pedal it goes great, stomp and hesitates or coughs. Auto turbo 28k miles

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post #8 of 14 (permalink) Old 11-24-2019, 12:34 PM
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Did you ever figure this out? Same problem here, if I ease into the pedal it goes great, stomp and hesitates or coughs. Auto turbo 28k miles
My hesitation was more evident at slow to moderate acceleration, but was intermittent. I'm a conservative driver, so never did find out if it happened if I stomped it. Anyway, it was still there until I traded it in back in August.
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post #9 of 14 (permalink) Old 11-26-2019, 09:37 PM
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Originally Posted by Need4Speed2 View Post
Hey all,

I get a 1 sec lag/hesitation when accelerating in 1st gear. Not sure if it happens often in 2nd gear. .......Not sure I have ever really noticed this before.
It's more pronounced in first gear for sure.

Is this normal?
No codes thrown.

- Old school turbo lag?
- Something fuel related?
- Plugs/electrical?
- clutch slipping (I may need a new clutch)?

Otherwise, the car runs like a boss!!

Thoughts/suggestions?
It's most likely your solenoids. At times after an oil change if too much oil is put in the solenoids get damaged and cause the hesitation.
Change the oil with correct amount of quarts. Then replace both solenoids. Should fix the problem

08 Redline
GM Cold Air Intake, RPI Downpipe, RPI Catback, RPI Intercooler, GMPP Turbo Upgrade, Performance Werks 2.0 Big Wheel Turbo, Trifecta Tune.
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post #10 of 14 (permalink) Old 11-26-2019, 10:01 PM
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Quote:
Originally Posted by Need4Speed2 View Post
Hey all,

I get a 1 sec lag/hesitation when accelerating in 1st gear. Not sure if it happens often in 2nd gear. .......Not sure I have ever really noticed this before.
It's more pronounced in first gear for sure.

Is this normal?
No codes thrown.

- Old school turbo lag?
- Something fuel related?
- Plugs/electrical?
- clutch slipping (I may need a new clutch)?

Otherwise, the car runs like a boss!!

Thoughts/suggestions?
Are you sure it's not just traction control taking over?

Kansas Bill
2008 Silver Red Line
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post #11 of 14 (permalink) Old 11-27-2019, 11:17 AM
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Originally Posted by msjlcapital View Post
It's most likely your solenoids. At times after an oil change if too much oil is put in the solenoids get damaged and cause the hesitation.
Change the oil with correct amount of quarts. Then replace both solenoids. Should fix the problem
This is the first time I have seen this suggested, and don't really know how it could happen.

A lot too much oil can cause foaming, and that may impair the operation of the solenoids along with bearings, lifters, and everything else, but I don't see how it could damage them. It also seems that any problem with the solenoids would show up as a DTC, since operation of the VVT system is monitored.

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post #12 of 14 (permalink) Old 11-27-2019, 12:40 PM
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To check the Kansas Bill theory push the traction button twice within 5 seconds this will put the car in competitive mode and will turn off the traction control while leaving abs stability etc on.If the hesitation is not there then your car is working as it should.
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post #13 of 14 (permalink) Old 12-12-2019, 10:06 AM
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In the old days of carburettors an initial lag/stall/hesitation had us looking at the throttle activated fuel pump, to make sure there was enough fuel squirt there to overcome an initial weakening of the mixture when flooring it from stand still/idle. Is there such a thing in fuel injection scenarios ? Maybe the Trifecta tune has it and the standard tune does not ?
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post #14 of 14 (permalink) Old 12-12-2019, 11:36 AM
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Originally Posted by AndInConclusion View Post
In the old days of carburettors an initial lag/stall/hesitation had us looking at the throttle activated fuel pump, to make sure there was enough fuel squirt there to overcome an initial weakening of the mixture when flooring it from stand still/idle. Is there such a thing in fuel injection scenarios ? Maybe the Trifecta tune has it and the standard tune does not ?
There is and it usually is referred to as Power Enrichment. The ECM will command an extra amount of fuel for a short time when there is a rapid change in the throttle position.
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