Results 1 to 14 of 14
Thread: Rough Idle
-
08-27-2008, 07:35 PM #1
- Join Date
- Dec 2005
- Location
- Orlando FL
- Age
- 44
- Posts
- 20
White- 98 Z28 Camaro
Rough Idle
Hey guys I have a 98 z28. Yesterday I was driving my car and while i was sitting at a light it felt like my car was going to stall out. It was idleing really rough. When I step on the gas the car drives fine. It seems like theres something wrong with it getting fuel at idle speed. I have long tube headers on it with an offroad y-pipe. It has o2 sims on it. I havent changed my fuel filter in a couple years. It feels like its going to die on me if i dont keep giving it gas. I was wondering if it could be my 02 sensors or my fuel filter. I have plenty of voltage. Any ideas would be very helpful.
-
08-27-2008, 07:42 PM #2
- Join Date
- Oct 2006
- Location
- Springfield
- Age
- 37
- Posts
- 326
Silver- 2004 SVT Cobra
Start with basic trouble shooting items, the cheap stuff. Definately get a new fuel filter. Try a PCV valve too. Have someone rev the car while you watch from the back, look for black smoke.
-
08-27-2008, 07:47 PM #3
-
08-28-2008, 04:10 AM #4
Mileage? Have you replaced any spark plugs recently? Are any dash lights coming on?
-
08-28-2008, 05:42 AM #5
- Join Date
- Dec 2005
- Location
- Orlando FL
- Age
- 44
- Posts
- 20
White- 98 Z28 Camaro
The SES light is on. The plugs were changed about 20,000 miles ago when I put my headers in.
-
08-28-2008, 05:42 AM #6
- Join Date
- Dec 2005
- Location
- Orlando FL
- Age
- 44
- Posts
- 20
White- 98 Z28 Camaro
The plugs are rated for 100,000 miles
-
08-28-2008, 09:21 AM #7
See if you can get a code reader and get the engine code thats coming up. It may tell you if a cylinder is missing or if you are running rich or lean. You should still change your fuel filter though, thats just good maintenance.
-
08-29-2008, 01:59 AM #8
- Join Date
- Jun 2008
- Location
- London, UK
- Posts
- 18
Pewter- 2001 Camaro Z28
I have the same rough idle issue as the original poster (sorry for hijacking your thread) and would like to try installing a new IAT, as per your suggestion. But what's confusing me is the actual location of the IAT sensor. You say it plugs into the lid, but I'm sure I've also seen mention of it being the higher of the 2 sensors that go into the throttle body and I've also heard that the IAT is usually part of the MAF!
Just looking at my engine I see 1 lead going into the lid, 1 going into the MAF and 2 into the throttle body. I just want to confirm that the one going into the lid is definitely the one I need to change.
Btw, I've ordered ACDelco Part #213-243....is that correct?Last edited by david68; 08-29-2008 at 03:25 PM.
-
08-29-2008, 07:06 AM #9
- Join Date
- Mar 2007
- Location
- NC
- Posts
- 421
NBM- 1998Z28
I 've got a 98 and it is definately the one on the airlid. May I suggest you get a $5.00 can of MAF cleaner and clean your MAF before you start spending money elsewhere.
TSP 347 SB, TSP Stage 2.5 PRC LS6, TSP MS4, Performabuilt Stage 2 4L60E, Yank PT4000, 4.11s, Fast 90/90, FTRA Cold air intake+all the free mods, Dynatech Supermaxx Exaust System, DMH Cutouts, Hooker Catback/FTRA Tips. Tuned by RPM/Garner NC. 11.28@119
-
08-29-2008, 08:11 AM #10
- Join Date
- Jun 2008
- Location
- London, UK
- Posts
- 18
Pewter- 2001 Camaro Z28
Thanks for confirming the location for me.
I've cleaned my MAF with electical contact cleaner spray as I had that to hand, but it made no noticeable difference. The idle is fine when the engine's cold but as soon as it's up to temperarure and I'm stationary in Drive, it sometimes feels like it's going to cut out....but it hasn't yet and no warning lights are showing.
-
08-29-2008, 02:01 PM #11
- Join Date
- Oct 2006
- Location
- Springfield
- Age
- 37
- Posts
- 326
Silver- 2004 SVT Cobra
I've cleaned my MAF with electical contact cleaner spray as I had that to hand, but it made no noticeable difference. The idle is fine when the engine's cold but as soon as it's up to temperarure and I'm stationary in Drive, it sometimes feels like it's going to cut out....but it hasn't yet and no warning lights are showing.
-
08-29-2008, 03:23 PM #12
- Join Date
- Jun 2008
- Location
- London, UK
- Posts
- 18
Pewter- 2001 Camaro Z28
-
08-30-2008, 11:21 AM #13
- Join Date
- Oct 2006
- Location
- Springfield
- Age
- 37
- Posts
- 326
Silver- 2004 SVT Cobra
Its sounds trannsmission related then, probally the torque converter. How many miles on the car?
-
08-30-2008, 11:32 AM #14
- Join Date
- Jun 2008
- Location
- London, UK
- Posts
- 18
Pewter- 2001 Camaro Z28
Thread Information
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
Similar Threads
-
Rough Idle
By thacher2189 in forum LT1Replies: 3Last Post: 02-19-2012, 02:04 PM -
Help: Rough Idle
By 1WickedWS6 in forum GM TrucksReplies: 12Last Post: 01-04-2012, 07:16 AM -
Help: intermittant rough idle, off idle hesitation
By Matto4785 in forum General HelpReplies: 1Last Post: 09-21-2009, 05:12 AM -
Help: rough idle
By RLamas in forum Firebird / WS6Replies: 8Last Post: 05-01-2009, 04:59 PM -
C5 Rough Idle
By BlkNBlkC5 in forum CorvetteReplies: 1Last Post: 04-14-2007, 06:42 PM
Bookmarks