 New Member, New Problems - PICS ADDED POST 3, 1994 7A-FE with a couple of trouble codes |
 Jul 30, 2009 - 10:34 AM
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Enthusiast Joined Jul 30, '09 From Detroit Currently Offline Reputation: 0 (0%)  |
So I'm getting code 51 (Knock Sensor) and 72 (EGR system) codes on my 1994 ST auto. I just got the car extra cheap as a beater and frankly know little about it. I know it is not stock.
The car runs (but is slow to me, but that's the nature of it I think). The engine runs and idles smoothly. The AC works, etc. These codes come on at random while driving and stay on until cleared (this has happened twice in my 100 miles of owning it). Gas mileage seems to be superb. The engine temp gauge on the dash barely goes above 1/4 of the way up, and it stays where it is after it reaches that position. So, 6g gurus, what do you suggest. I will attempt to post some engine bay pics early this afternoon. This will soon be my only car and I need it to run well for at least another 50k miles. It has 190k on it, new belts (including timing), new seals (including rear main), and new gaskets. This post has been edited by boony: Jul 30, 2009 - 1:07 PM |
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Jul 30, 2009 - 10:38 PM
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 Enthusiast  Joined Mar 22, '07 From Houston, TX Currently Offline Reputation: 4 (100%) |
you have no EGR system. now I am pretty sure the grey plug is the one that needs to be shorted. just get a twist-tie or small paperclip and short the two pins together.
my mpg is, obviously, between 25-31mpg. your oil sending unit is fine, assuming that can symbol goes out after starting the engine. -------------------- QUOTE "And, as always, your friendship, help, and dedication to the advancement of Texas Celica dominance is GREATLY appreciated. Thanks bro." -DEATH 1994 GT: V6 swap, 5speed E53 W/ LSD, All Power, now RED 1995 ST: SOLD @273k miles, Auto, all power, CarPC, White 1994 ST: Totaled, 5spd, all power, Red RIP 07/09/09 @ 241,810 1994 Lexus LS400: This is my new DD |
Posts in this topic
boony New Member, New Problems - PICS ADDED POST 3 Jul 30, 2009 - 10:34 AM
stephen_lee Code 72 is probably just the thermistor bad on you... Jul 30, 2009 - 1:07 PM
boony QUOTE (stephen_lee @ Jul 30, 2009 - 1... Jul 30, 2009 - 1:14 PM stephen_lee QUOTE (boony @ Jul 30, 2009 - 1:14 P... Jul 30, 2009 - 1:37 PM boony PHOTOS:
From the driver's side looking down a... Jul 30, 2009 - 1:07 PM stephen_lee QUOTE (boony @ Jul 30, 2009 - 1:07 P... Jul 30, 2009 - 1:43 PM boony QUOTE (stephen_lee @ Jul 30, 2009 - 1... Jul 30, 2009 - 2:11 PM 95CelicaST When I go on lunch I'll take some shots of the... Jul 30, 2009 - 1:13 PM boony QUOTE (95CelicaST @ Jul 30, 2009 - 1... Jul 30, 2009 - 1:26 PM 95CelicaST Why are you selling the STI?
After looking throu... Jul 30, 2009 - 1:28 PM boony QUOTE (95CelicaST @ Jul 30, 2009 - 1... Jul 30, 2009 - 1:53 PM samir0189 knock sensor is behind the intake manifold
http:/... Jul 30, 2009 - 2:01 PM stephen_lee I looked up Code 51. not a knock sensor code. Copy... Jul 30, 2009 - 2:03 PM stephen_lee the wiring does go back towards the engine, but th... Jul 30, 2009 - 2:19 PM boony QUOTE (stephen_lee @ Jul 30, 2009 - 2... Jul 30, 2009 - 2:41 PM boony Also, bump for whether this picture of the cluster... Jul 30, 2009 - 2:53 PM boony UPDATE:
So the knock code has not returned. Just ... Jul 30, 2009 - 6:20 PM 95CelicaST Seems a bit low... My last mixed driving fill up w... Jul 30, 2009 - 7:53 PM boony QUOTE (95CelicaST @ Jul 30, 2009 - 8... Jul 30, 2009 - 8:05 PM boony QUOTE (stephen_lee @ Jul 30, 2009 - 10... Jul 31, 2009 - 7:32 AM boony UPDATE: So I jumped the gray sensor and so far no ... Jul 31, 2009 - 11:28 PM |
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