Question about 1993 Toyota Camry V6
Hello i Have a 93 toyota camry i jest install new head gasket and i think i have a OBD 1 Code 52 and 71
Posted by Anonymous on
52 is a faulty knock sensor signal. The connection there may be loose or broken. 71 is an EGR temperature signal fault. Again the connection may be loose, or the EGR temp sensor faulty, or the EGR vacuum switching valve faulty.
Posted on May 11, 2014
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Posted on Jan 02, 2017
There is a VSV (vacuum switching valve) , usually mounted on the back side of engine block, under the intake manifold, as well as the map sensor, that can also cause that code if one or the other is faulty. It takes some pretty detailed troubleshooting to confirm this in some cases, so if that's not in your line of work, you may have to have it properly diagnosed, or take a 50/50 shot at which one first.
Posted on Jan 24, 2009
Yes, you can, but not exactly recommended. If you are going to go that deep into it, then might as well do everything else. However, being unemployed tends to have a negative impact on the wallet....
I suspect it is more than just rings. I think that the walls have been scored badly as well. You may be able to use a borescope to take a peak into the cylinder through spark plug hole. Move the piston to bottom of stroke, and see what you can see. If scarred, much work will be needed. If hatches look alright, then you might be able to get away with just rings.
What kind of compression are you getting on #1 vs #2? This also might be a blown headgasket into an oil passage, or the head (perhaps block?) is ever so slightly warped in this area.
Posted on Aug 29, 2009
Testimonial: "Thanks for the quick response. Very much appreciated your input, all makes sense and got my mind on the right track again. Thanks"
Hello, and welcome to FIxYa.
To erase the check engine light on a 1994 Camry, open the hood, and, in the engine compartment fuse box, remove the blue 15 amp EFI fuse for one minute. This will clear the codes. If you have a hard code; ie a malfunctioning sensor, the light will come right back on.
Thanks for choosing FixYa for assistance.
Posted on Mar 12, 2010
Tips for a great answer:
- Excess vacuum
- Purge flow during non-commanded conditions
- Fuel Level and Fuel Pressure sensor faults
- EVAP Purge and Vent Valve faults
The ECM monitors the Fuel Tank Pressure sensor in order to determine the level of vacuum/pressure in the EVAP system. The ECM commands both the EVAP Purge Solenoid and the EVAP Vent Valve ON when the conditions are met in order to apply an engine vacuum to the EVAP system. The ECM commands the EVAP Purge Solenoid OFF once the system has reached a predetermined level of vacuum. This test verifies if a vacuum can be achieved in the EVAP system. Failure to develop a vacuum may be caused by a large leak or a restriction.
P0441 1998 Toyota Camry Evaporative Emission Control System Incorrect...
Possible causes - Missing Fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- Incorrect fuel tank vacuum relief valve
P0441 Toyota Evaporative Emission Control System Incorrect Purge Flow
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