rough idle at startup
Thread Starter
Pro
Joined: Nov 2006
Posts: 511
Likes: 65
From: Vancouver BC
rough idle at startup
Hi folks - when I start the car, the car idles rough for the first 10seconds then it runs right. no codes. It only occurs first start of the day.
I just picked up a new valley cover - so I hope the rough idling is due to oil in the throttle body.....
I just picked up a new valley cover - so I hope the rough idling is due to oil in the throttle body.....
Burning Brakes
Joined: Dec 2009
Posts: 963
Likes: 23
Check these threads. They have a lot of good info for the same problem.
http://forums.corvetteforum.com/c5-t...re-warmup.html
http://forums.corvetteforum.com/c5-t...when-cold.html
http://forums.corvetteforum.com/c5-t...re-warmup.html
http://forums.corvetteforum.com/c5-t...when-cold.html
Thread Starter
Pro
Joined: Nov 2006
Posts: 511
Likes: 65
From: Vancouver BC
Check these threads. They have a lot of good info for the same problem.
http://forums.corvetteforum.com/c5-t...re-warmup.html
http://forums.corvetteforum.com/c5-t...when-cold.html
http://forums.corvetteforum.com/c5-t...re-warmup.html
http://forums.corvetteforum.com/c5-t...when-cold.html
well tonight I installed new valley cover. I took it for a good run down the highway to clear out some of the oil (I found a puddle in the throttle body, and when I removed the intake manifold, I found oil near the intake ports.) probably explains why it only idled rough for the first 10 seconds in the morning. I will post the outcome tomorrow after a cold start.
Thread Starter
Pro
Joined: Nov 2006
Posts: 511
Likes: 65
From: Vancouver BC
Well i just did a cold start up (ambient temp is 15 (60 degrees F))
The issue is 99% no longer there. Barely a hint. I still intend to change out the fuel filter this weekend.
There was alot of oil last night in various places when i had removed the valley cover. I continue to run the pcv as there didnt seem any noticible difference when i blew into the tube (2.5mm orfice) - however there was huge difference not using pcv valve - for the worse
The issue is 99% no longer there. Barely a hint. I still intend to change out the fuel filter this weekend.
There was alot of oil last night in various places when i had removed the valley cover. I continue to run the pcv as there didnt seem any noticible difference when i blew into the tube (2.5mm orfice) - however there was huge difference not using pcv valve - for the worse
Premium Supporting Vendor
Joined: Oct 2004
Posts: 36,838
Likes: 438
From: Manassas Park VA
St. Jude Donor '07-'08,-'13-'14, '16-'17
Well i just did a cold start up (ambient temp is 15 (60 degrees F))
The issue is 99% no longer there. Barely a hint. I still intend to change out the fuel filter this weekend.
There was alot of oil last night in various places when i had removed the valley cover. I continue to run the pcv as there didnt seem any noticible difference when i blew into the tube (2.5mm orfice) - however there was huge difference not using pcv valve - for the worse
The issue is 99% no longer there. Barely a hint. I still intend to change out the fuel filter this weekend.
There was alot of oil last night in various places when i had removed the valley cover. I continue to run the pcv as there didnt seem any noticible difference when i blew into the tube (2.5mm orfice) - however there was huge difference not using pcv valve - for the worse
and get one of these...
http://www.customcorvetteaccessories...lcatchcan.html
Peace
Chip
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Thread Starter
Pro
Joined: Nov 2006
Posts: 511
Likes: 65
From: Vancouver BC
Clean your MAF
and get one of these...
http://www.customcorvetteaccessories...lcatchcan.html
Peace
Chip
and get one of these...
http://www.customcorvetteaccessories...lcatchcan.html
Peace
Chip
Premium Supporting Vendor
Joined: Oct 2004
Posts: 36,838
Likes: 438
From: Manassas Park VA
St. Jude Donor '07-'08,-'13-'14, '16-'17
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