OBD1-code 52 for 1995 toyota 4runner help

40

Asked by Jul 08, 2014 at 12:12 PM about the 1995 Toyota 4Runner 4 Dr SR5 V6 4WD SUV

Question type: Maintenance & Repair

I just recently found out that my 4runner
wich is a v6 4x4 3.0engine has a trouble
code which is the 52 for the knock sensor
signal does anyone knows about this, I did
a head gasket replacement, rebuild both
heads, replaced the knock sensor wire but
didnt replace the the knock sensor, it been
2years since I did all this work and its been
almost a month that this code came up
turns on the check engine light after couple
minutes of driving the truck, and it losses
power, hesitate to accelerate on a stop or
red light its frustrating please help any
secure or promising suggestions or ideas I
would really appreciate it thanks

8 Answers

83,145

Most likely the knock sensor went bad, I usually replace them when I pull a head for any kind of head work also when I do a freeze plug replacement job.

2 out of 2 people think this is helpful.
40

Thats what I was thinking that the knock sesor fried,do you know anything about drilling the block of the engine to put the knock sensor on the outside and not take everything apart and run the wire where the new spot and knock sensor will go. what do you mean by feeze plug replacement job?

1 out of 1 people think this is helpful.
83,145

The block should already be knock sensor ready, there maybe a bolt in it to keep the crud out. Freeze plugs are the small metal pugs that are in the block and heads that eventually go bad and start leaking.

1 out of 1 people think this is helpful.
2,895

Knock sensor is under manifold intake two intake. Gskt sealant Toyota make a great sealant 00295-00102 black sealant really good product.i put all my motors togeather with it. Also replace wire 82219-35010 wire not to bad of a job 2 hrs maybe.do it yourself it's easy.

1 out of 1 people think this is helpful.
2,895

Ck the wire the sensor don't go bad very often I worked for toyota 23 years on. Shop parts counter.problem most of time wire.

4 out of 4 people think this is helpful.
40

i have same issue changed wire and sensor still code 52 also changed timing, spark plugs, wires, cap, rotor, radiator, fuel injectors, ecu, egr. only thing i have left to try is engine wiring harness and going to start that tomorrow unless anyone else has any input please call any time i am frustrated and broke Marc 401-450-6698

4 out of 4 people think this is helpful.

Marc I have the same problem did you find a solution

10

I have the same problem and I lost power

1 out of 1 people think this is helpful.

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