Shutter on the highway
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Joined: Nov 2011
Posts: 1,367
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From: Woodstock, GA
Shutter on the highway Long time no post here. I guess that means all has been well with the TA - and it has!
So this morning, I'm on my way to work (at highway speeds) and I feel what I think is torque converter shudder. It happened 4 days ago briefly on the highway and it seemed to come and go as quickly as I turned my music down. I wasn't 100% that it wasn't the woofer hammering me
So I pull it over and kick it into 3rd gear (I have it tuned to NOT lock up in any gear but 4th) and it did it as I accelerated getting off the highway - so obviously not the TC which is good. No check engine light on or flashing for a misfire. I had just filled up with some 93 octane but I was 30 miles down the road when this happened. I did a 180 and drove back home and didn't have any issue at all driving back.
I didn't have my scanner with me, but I'm thinking fuel. I picked up a fuel filter and injector cleaner (I've never used any) and she has 406,000 miles .....
Anything else that I might be overlooking? Thanks in advance.
So this morning, I'm on my way to work (at highway speeds) and I feel what I think is torque converter shudder. It happened 4 days ago briefly on the highway and it seemed to come and go as quickly as I turned my music down. I wasn't 100% that it wasn't the woofer hammering me
So I pull it over and kick it into 3rd gear (I have it tuned to NOT lock up in any gear but 4th) and it did it as I accelerated getting off the highway - so obviously not the TC which is good. No check engine light on or flashing for a misfire. I had just filled up with some 93 octane but I was 30 miles down the road when this happened. I did a 180 and drove back home and didn't have any issue at all driving back.I didn't have my scanner with me, but I'm thinking fuel. I picked up a fuel filter and injector cleaner (I've never used any) and she has 406,000 miles .....
Anything else that I might be overlooking? Thanks in advance.
Thread Starter
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Joined: Nov 2011
Posts: 1,367
Likes: 144
From: Woodstock, GA
I’d say it’s been a while on the wires but probably around 20k on the plugs. I’m going to swap the fuel pump, fuel filter, clean the air filter this weekend and go from there. If it were misfiring I would think that the CEL would be flashing and a code set. There was none.
Thread Starter
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Joined: Nov 2011
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From: Woodstock, GA
Staging Lane
Joined: Jan 2023
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was it a shudder or a stumble? Meaning was the feeling drivetrain or was it the engine?
I had a 2000 Z28 that would hesitate or stumble from like 2500-3000ish and that was the MAF. Changed it out and it was perfect again.
Dont overcomplicate things, start small, like you are. Clean the MAF, do some routine services.
As for the fuel, do you regularly fill up at that particular gas station? was it a nice gas station or a run down fill station?
I had a 2000 Z28 that would hesitate or stumble from like 2500-3000ish and that was the MAF. Changed it out and it was perfect again.
Dont overcomplicate things, start small, like you are. Clean the MAF, do some routine services.
As for the fuel, do you regularly fill up at that particular gas station? was it a nice gas station or a run down fill station?
Thread Starter
TECH Fanatic
Joined: Nov 2011
Posts: 1,367
Likes: 144
From: Woodstock, GA
was it a shudder or a stumble? Meaning was the feeling drivetrain or was it the engine?
I had a 2000 Z28 that would hesitate or stumble from like 2500-3000ish and that was the MAF. Changed it out and it was perfect again.
Dont overcomplicate things, start small, like you are. Clean the MAF, do some routine services.
As for the fuel, do you regularly fill up at that particular gas station? was it a nice gas station or a run down fill station?
I had a 2000 Z28 that would hesitate or stumble from like 2500-3000ish and that was the MAF. Changed it out and it was perfect again.
Dont overcomplicate things, start small, like you are. Clean the MAF, do some routine services.
As for the fuel, do you regularly fill up at that particular gas station? was it a nice gas station or a run down fill station?
I do regularly fill up at that station and haven't ever had any issues with their 93 octane. I'm going to change the fuel filter, clean the air filter ....etc ... this weekend.
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From: Schiller Park, ILL Member: #317
If you suspect a fueling issue and don't think it's due to poor sensor input (such as improper MAF readings) because you are operating exclusively in SD mode, then I'd start by checking fuel pressure.
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Thread Starter
TECH Fanatic
Joined: Nov 2011
Posts: 1,367
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From: Woodstock, GA
I actually haven't driven it since that day, but part of me wants to drive it and find the "smoking gun" while logging the drive. The other part of me wants to just swap the fuel pump and filter, drive it log it and see if it's fixed.
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