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Old 06-16-2018, 09:21 AM
copeytondiesel05 copeytondiesel05 is offline
Join Date: Jun 2018
Location: Peyton Co. USA
Posts: 1
Default 05 acceleration is slow and black smoke

I took off out of the driveway and the truck slowly accelerated with black smoke out of the tailpipe. once I was past @ 45mph the truck drove normal. any ideas???? milage is 190,000
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Old 06-16-2018, 10:04 AM
DmaxMaverick's Avatar
DmaxMaverick DmaxMaverick is offline
Join Date: Apr 2001
Location: CA
Posts: 12,438

Welcome aboard!

Check for codes, active and history. If the SES lamp is on, there will be active codes, and likely more in history.

Could be air cleaner or MAF fouling. Clean and/or replace either.

Could be a PCM glitch. If it doesn't repeat, don't sweat it.

Could be an early indication of turbo vane fouling. It's more common with power adding programs, but can happen with any of them over a lot of time/miles, especially high loading. Cleaning and exercising the vane and servo (Tech II required) usually fixes it for a while (until it fouls again), but wear requires closer exam and repair.
1985 Blazer 6.2
2001 GMC 2500HD D/A
2014 Chevy Cruze Diesel - Fabulous car, no problems at all, but sold Nov. 2016 @ 55K miles.
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