Results 1 to 18 of 18
Thread: 99 z28 bogging badly
-
06-15-2008, 08:26 AM #1
- Join Date
- Jul 2007
- Location
- ILLINOIS
- Posts
- 7
BLACK- 1999 Z28
99 z28 bogging badly
i dont know what is going on with my z28 but it has been bogging really badly. seems like worst when shifting form first to second. its an automatic and seems like it just falls on it face. it also seems like when im on the fuel and accelerating that it will pause and then regain power then pause again but i know i am not moving my foot at all. i want to fix this because i know that this thing can preform way better than it is right now. its a 1999 z28 stock its my daily driver and im looking to get it sold by the end of the summer but i want the next buyer to be happy with what it can offer and i want to fix it before trying to sell.... let me know if anyone else is having problems or if you have any ideas.
-
06-15-2008, 09:12 AM #2
MAybe a clogged fuel filter, my 89 firebird did the same thing, i got a new filter and it helped alot, the old one looked like it had choco milk coming out of it.
-
06-15-2008, 06:15 PM #3
Mileage? We need more info? Any SES light?
-
06-16-2008, 07:37 AM #4
- Join Date
- Jul 2007
- Location
- ILLINOIS
- Posts
- 7
BLACK- 1999 Z28
just about to turn 85000. no lights no warnings just started happing out of the blue. i maintenance it all the time, as i work on a race car so im always on top of that stuff.
-
06-16-2008, 07:40 AM #5
get a new air filter and buy some fuel injector cleaner. it could also be clogged cats, along with the dirty fuel injectors. so if you have time try to get the cats checked out
-
06-16-2008, 08:22 AM #6
its most likely fuel related. My z28 had the same problem. I replaced the fuel filter, it solved the problem, but then about 2 weeks later my fuel pump went out. I'm in the process of putting a new walbro pump in.
-
06-16-2008, 08:24 AM #7
why did your water pump go out?
-
06-16-2008, 08:35 AM #8
-
06-16-2008, 08:42 AM #9
-
06-16-2008, 08:58 AM #10
I miss my baby, I haven't been able to drive it for the last month because I don't have enough time ever to work on putting the new pump in.
-
06-16-2008, 09:17 PM #11
- Join Date
- Jun 2007
- Location
- corona ca
- Age
- 37
- Posts
- 2,250
white, white and pewter- Rip99SSA4,74Z28M4,02SSM6
you need to get a scanner hooked up with live data, such as a tech 2 or even your buddy's diablo sport,
what you are looking for is a high fuel pulse and a lean a/f mixture under wide open accel if this is the case you are looking at a new pump and or filter, probably both. i would start their it seems as if your gonna need a pump.
also under accel, does it shake when it has a lack of power or just doesnt go?
-
06-17-2008, 04:41 AM #12
hahaha, junky, I just have to say NICE avater!!! F'in Richard Simmons.
-
06-17-2008, 07:04 AM #13
- Join Date
- Jul 2007
- Location
- ILLINOIS
- Posts
- 7
BLACK- 1999 Z28
it doesn't seem to shake when it looses power just doesn't go. although sometimes i notice a little shake when i'm at idle at a stop. i just noticed that i need to see how consistent that is. i figured it may be the cats being plugged up but haven't had a chance to get under it yet. thanks for all the suggestions i will try all these and let you know the results let me know if there are any more>
-
06-17-2008, 10:14 AM #14
-
06-25-2008, 05:32 PM #15
Did you get it figured out?
-
06-26-2008, 06:47 PM #16
what do u suggest for cat replacements... i was told headers heat up the fuel lines causing the gasoline to boil in the fuel lines and vapor lock......cause the headers are so close to where the fuel line comes up through the shock tower area..... thanks i am lookin at headers for my 01 z car....
-
06-27-2008, 02:38 AM #17
-
06-27-2008, 03:16 AM #18
- Join Date
- Nov 2006
- Location
- Indianapolis
- Age
- 61
- Posts
- 5,188
Black- 2000 WS6 6spd Hooker LT
Nobody has suggested a possible quick, easy fix: Get some MAF cleaner, you could have a dirty sensor (did you oil your K&N or similar air filter). That would skew the readings and not tell the PCM correct airflow (not as much as reality). And yeah, low fuel pressure/clogged catalytics will do the same as well. If it shakes as it is bogging, I would look for an ignition problem first.
Thread Information
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
Similar Threads
-
bogging out
By 98camarols1 in forum General HelpReplies: 29Last Post: 11-06-2011, 04:36 AM -
Bogging a bit
By 99hawk in forum Firebird / WS6Replies: 5Last Post: 05-28-2010, 10:30 AM -
Mud bogging in a T/A!?
By TempleU_WS6 in forum Firebird / WS6Replies: 19Last Post: 08-30-2008, 12:40 PM -
bogging motor
By blackbird02 in forum General HelpReplies: 6Last Post: 04-03-2007, 02:48 PM -
Bogging out of the hole
By Mr. Luos in forum Drag RacingReplies: 8Last Post: 01-30-2007, 08:35 AM
Bookmarks