Subaru Impreza Forum - WRX STI Rally Performance Tuning

Subaru Impreza Forum - WRX STI Rally Performance Tuning (http://www.subaru-impreza.org/forum/)
-   Subaru Impreza Discussions (http://www.subaru-impreza.org/forum/subaru-impreza-discussions/)
-   -   help please (http://www.subaru-impreza.org/forum/subaru-impreza-discussions/99931-help-please.html)

hoffmanvp3 26 Jan 2011 09:27 PM

help please
 
hi guys im new here as i just bought myself a 2001 impreza wrx and 1 week later i have a problem thats just accured.

when im in the boost the car feels like its missing a few beats,not quite missfiring but loses power for a split second and then back on the boost and then the engine light started to flash and is now staying on.
the car is standard apart from a cat back system and dump valve.
now when i looked under the hood i heard rattling coming from the dump valve.
when the cars idling the internal valve is not on seat but rattling up and down.
my question is:
would this dump valve be causing my boost problem and is that valve meant to be on seat when idling?

your thoughts would be grateful.

thanks

shambles 26 Jan 2011 09:48 PM

Re: help please
 
is it a bailyes dump valve - frequently leak. Standard subaru part is better

hoffmanvp3 26 Jan 2011 09:59 PM

Re: help please
 
Its a TURBO XS

shambles 26 Jan 2011 11:55 PM

Re: help please
 
id would think the diaphragm has broken. Get the standard one. The ecu see air in the engine which you have just vented to atmosphere with a dump valve causing the car to run rich when you floor it again - not good. Cheap one are rubbish and frequwntly cause problems

Tidgy 27 Jan 2011 12:52 PM

Re: help please
 
sounds like either a boost control issue or possibly a missfire, need to find out what the code its kicked up is, sounds like one of the sensors is on the blink and that will be your issue.

hoffmanvp3 28 Jan 2011 05:33 AM

Re: help please
 
Hi guys. Thanks for all your help. But as of today the car is running totsweet 
I took it to a mate with a diagnostic comp and cylinder 1 was the culprit. Pulled out the plug to find that the ceramic was cracked. A quick change and all is well 

hoffmanvp3 28 Jan 2011 05:36 AM

Re: help please
 
Forgot to mention that I also rebuilt the dump valve and greased it up and is working better now. I guess u have to clean them from time to time


All times are GMT. The time now is 01:40 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.


1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177