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1993 MR2 SW20 Turbo doesnt want to start....PLease Assistance Needed.

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surok
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Re:1993 MR2 SW20 Turbo doesnt want to start....PLease Assistance Needed. 2012/09/27 09:48:54 (permalink)
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well, its only useful if you are getting a check engine light.

Kôsoku bosu
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Mrskylighter
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Re:1993 MR2 SW20 Turbo doesnt want to start....PLease Assistance Needed. 2012/09/27 10:48:22 (permalink)
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You can have fault codes stored/present without a check engine light lit Richard.
Just had this with my car. Code 24 Inlet air temp sensor, doesn't light up the check engine light.
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surok
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Re:1993 MR2 SW20 Turbo doesnt want to start....PLease Assistance Needed. 2012/09/27 12:11:08 (permalink)
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that means that the check engine light has come on at some point.

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sredze
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Re:1993 MR2 SW20 Turbo doesnt want to start....PLease Assistance Needed. 2012/09/27 12:18:05 (permalink)
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well I ll check it out tonight, though it would be a steep learning curve as I havent done it before.
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Mrskylighter
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Re:1993 MR2 SW20 Turbo doesnt want to start....PLease Assistance Needed. 2012/09/27 12:20:16 (permalink)
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No it doesn't.
Only certain faults cause the dash light to light up. All faults get stored as a code though.
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sredze
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Re:1993 MR2 SW20 Turbo doesnt want to start....PLease Assistance Needed. 2012/09/27 13:09:52 (permalink)
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Can someone just give me a brief example and description of the blinking sequence I might expect when i do check the diagnostic. Say an error code for a faulty intake air temp sensor (Code 24) OR air flow meter signal error (Code 31)? Thanks.
post edited by sredze - 2012/09/27 13:16:54
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Mrskylighter
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Re:1993 MR2 SW20 Turbo doesnt want to start....PLease Assistance Needed. 2012/09/27 15:46:30 (permalink)
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HAve a look at the link below for some information on the procedure. It is for a Celica but its the same engine and basically the same ecu. Codes are the same also.
There are MR2 guides on the net somewhere but I found this one when I searched in 2 seconds etc.
 
http://www.toyotanation.com/forum/17-celica-forum/72740-gt4-3sgte-easy-mods-common-faults.html 
 
The bottom half of the guide above is specific Celica stuff so just read the first bit on error codes.
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purple5ive
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Re:1993 MR2 SW20 Turbo doesnt want to start....PLease Assistance Needed. 2012/09/27 16:52:28 (permalink)
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if you used the search function like i mentioned you would ahve found this
 
http://www.mr2australia.com/mr2play/tm.aspx?m=58447&high=error+codes
 
 

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sredze
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Re:1993 MR2 SW20 Turbo doesnt want to start....PLease Assistance Needed. 2012/09/27 18:22:54 (permalink)
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Thanks a bunch both of you. I'll post how it all went a bit later on.
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sredze
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Re:1993 MR2 SW20 Turbo doesnt want to start....PLease Assistance Needed. 2012/09/27 21:21:18 (permalink)
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Ok, so i ve run the diagnostic procedure and its error code 14: the ignition coil. There was no more error codes after. It just kept on repeating that one. Anyone know how to solve this??
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Re:1993 MR2 SW20 Turbo doesnt want to start....PLease Assistance Needed. 2012/09/27 22:30:42 (permalink)
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Did the mechanic who installed the new bov plug the hole that is left over in the air filter piping? The stock blow of valve vents back into the black piping between the turbo and air flow meter.
 
From what I have read a code 14 can be stored if you keep trying to start the engine without success.
 
Other reasons for code 14 can include, faulty ecu, igniter, coil or wiring in between.
 
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Mrskylighter
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Re:1993 MR2 SW20 Turbo doesnt want to start....PLease Assistance Needed. 2012/09/27 22:41:35 (permalink)
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The pic below shows the where the stock bov used to connect to. Check to see if the mechanic has plugged the black air filter hose where the black metal bov pipe used to be. 
 

 
post edited by Mrskylighter - 2012/09/27 22:44:55
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sredze
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Re:1993 MR2 SW20 Turbo doesnt want to start....PLease Assistance Needed. 2012/09/28 06:45:12 (permalink)
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Well there is def an unconnected hole on the inlet going into the AFM meter, was that previously like that, i cant remember. All i know is the previous set up was with a plum back BOV feeding back into the intake. I will take a pic of the whole set up tonight and post it so you can inspect. As for the error code, I have been trying to start the engine quiet a few times, so maybe thats a possibility. The other night though when i unplugged the ecu the first time, it started straight away, but then the same issue. unplugging it again didnt help. What explains that?
post edited by sredze - 2012/09/28 06:52:30
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Mrskylighter
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Re:1993 MR2 SW20 Turbo doesnt want to start....PLease Assistance Needed. 2012/09/28 07:29:16 (permalink)
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Block that hole in the air filter piping and try and start the car?
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Mrskylighter
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Re:1993 MR2 SW20 Turbo doesnt want to start....PLease Assistance Needed. 2012/09/28 08:28:10 (permalink)
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Just keep in mind that whatever you block the hole with must not be able to be sucked through and into the turbo.
Just block it with your hand or something temporarily and get someone to start the car.
If that ends up being the problem you'll need something like this http://www.hpheaven.com.au/store/parts-accessories/info/1256/turbosmart-bov-25mm-hose-blanking-plug/?cat1=48&catid=0&page=1
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