 Guess I'll have to sell it., EGR |
 Mar 2, 2018 - 10:54 AM
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Enthusiast  Joined Mar 6, '17 From Sacramento Currently Offline Reputation: 0 (0%)  |
Today is my last day of legal driving. We found the new vsv I bought was faulty, so I bought another one, we tested it, it works. Check engine light came back on last night, still egr. Replaced all the necessary parts, egr, modulator and vsv, new vacuum lines, everything is clean. We are truly at a loss. Maybe 02 sensor? I read about it. P0401. Never ending. This sucks.
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Mar 2, 2018 - 12:43 PM
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Enthusiast Joined May 2, '15 From NY Currently Offline Reputation: 3 (100%) |
QUOTE (ST204GT83 @ Mar 2, 2018 - 10:54 AM)  Today is my last day of legal driving. We found the new vsv I bought was faulty, so I bought another one, we tested it, it works. Check engine light came back on last night, still egr. Replaced all the necessary parts, egr, modulator and vsv, new vacuum lines, everything is clean. We are truly at a loss. Maybe 02 sensor? I read about it. P0401. Never ending. This sucks. Did you replace it with an OEM one? There is a known issue with aftermarket EGR VSV's on 5SFE, and many folks have had issue with aftermarket valves. Also make sure you re-connect the vacuum lines correctly after the installation of the new valves. It's easy to switch them around. I learned that the hard way 
This post has been edited by slavie: Mar 2, 2018 - 12:44 PM |
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Mar 21, 2018 - 8:44 AM
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Enthusiast Joined May 2, '15 From NY Currently Offline Reputation: 3 (100%) |
QUOTE (slavie @ Mar 2, 2018 - 12:43 PM) QUOTE (ST204GT83 @ Mar 2, 2018 - 10:54 AM) Today is my last day of legal driving. We found the new vsv I bought was faulty, so I bought another one, we tested it, it works. Check engine light came back on last night, still egr. Replaced all the necessary parts, egr, modulator and vsv, new vacuum lines, everything is clean. We are truly at a loss. Maybe 02 sensor? I read about it. P0401. Never ending. This sucks. Did you replace it with an OEM one? There is a known issue with aftermarket EGR VSV's on 5SFE, and many folks have had issue with aftermarket valves. Also make sure you re-connect the vacuum lines correctly after the installation of the new valves. It's easy to switch them around. I learned that the hard way I'm gonna repeat my own question one more time. Again, the EGR vacuum switching valve, as is the case with other VSV's, draws a metered amount of vacuum, and this vacuum draw is what ECU detects through MAP sensor to throw codes (as I explained in my 2nd post here, which was also ignored). Which one did you put in? OEM, or aftermarket garbage? |
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Mar 21, 2018 - 9:42 AM
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Enthusiast Joined Mar 6, '17 From Sacramento Currently Offline Reputation: 0 (0%) |
QUOTE (slavie @ Mar 21, 2018 - 9:44 AM) QUOTE (slavie @ Mar 2, 2018 - 12:43 PM) QUOTE (ST204GT83 @ Mar 2, 2018 - 10:54 AM) Today is my last day of legal driving. We found the new vsv I bought was faulty, so I bought another one, we tested it, it works. Check engine light came back on last night, still egr. Replaced all the necessary parts, egr, modulator and vsv, new vacuum lines, everything is clean. We are truly at a loss. Maybe 02 sensor? I read about it. P0401. Never ending. This sucks. Did you replace it with an OEM one? There is a known issue with aftermarket EGR VSV's on 5SFE, and many folks have had issue with aftermarket valves. Also make sure you re-connect the vacuum lines correctly after the installation of the new valves. It's easy to switch them around. I learned that the hard way I'm gonna repeat my own question one more time. Again, the EGR vacuum switching valve, as is the case with other VSV's, draws a metered amount of vacuum, and this vacuum draw is what ECU detects through MAP sensor to throw codes (as I explained in my 2nd post here, which was also ignored). Which one did you put in? OEM, or aftermarket garbage? First one was aftermarket, second one I got at autozone for $70, the guys at the shop also put on another one on with no result. Three have been used. |
Posts in this topic
ST204GT83 Guess I'll have to sell it. Mar 2, 2018 - 10:54 AM
slavie QUOTE (ST204GT83 @ Mar 21, 2018 - 10... Mar 21, 2018 - 11:46 AM ST204GT83 QUOTE (slavie @ Mar 21, 2018 - 11:46... Mar 21, 2018 - 12:55 PM ST204GT83 QUOTE (ST204GT83 @ Mar 21, 2018 - 1... Mar 22, 2018 - 5:12 PM
djgeo05 I have been fighting this same code for almost a y... Mar 2, 2018 - 4:22 PM ST204GT83 QUOTE (djgeo05 @ Mar 2, 2018 - 4:22 ... Mar 2, 2018 - 6:39 PM Smaay have you checked the wiring from the ECU to the VS... Mar 2, 2018 - 8:41 PM ST204GT83 QUOTE (Smaay @ Mar 2, 2018 - 9:41 PM... Mar 3, 2018 - 12:35 AM micronian That P0401 code is a bitch. I've had to deal w... Mar 11, 2018 - 3:07 AM Bitter How would a component from the evap system affect ... Mar 11, 2018 - 9:01 AM ST204GT83 QUOTE (Bitter @ Mar 11, 2018 - 10:01... Mar 11, 2018 - 9:44 AM ST204GT83 Bitter, are there supposed to be holes for vacuum ... Mar 11, 2018 - 9:52 AM Smaay the charcoal canister has NOTHING to do with the E... Mar 11, 2018 - 8:04 PM ST204GT83 QUOTE (Smaay @ Mar 11, 2018 - 8:04 P... Mar 12, 2018 - 1:26 AM slavie Have you actually tested the EGR system? The facto... Mar 11, 2018 - 8:29 PM 97GTinKC Possible causes for P0401:
EGR passage clogged ... Mar 20, 2018 - 1:52 PM NgoFcukinWay Had that issue on a '99 camry we owned. I put ... Mar 20, 2018 - 5:28 PM ST204GT83 QUOTE (NgoFcukinWay @ Mar 20, 2018 - 6... Mar 20, 2018 - 7:52 PM ST204GT83 Just got my oem vsv delivered, and my ecu is on th... Mar 30, 2018 - 10:15 PM ST204GT83 Hey everyone, got good news, EGR light is gone... Apr 6, 2018 - 9:51 AM ST204GT83 Alright, set catalyst monitor today, went to smog,... Apr 10, 2018 - 6:15 PM |
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