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Indy 500 motor knocks

Motor knocks

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Could be bad gas. try running fresh gas. if that dont work you have internal problems. make sure it is firing on both cylinders though. when you start it cold you can feel if one is running hotter than the other. do a compression test. 120 psi is normal and no more than 10 lbs difference between cylinders. if one is low motor needs a rebuild

Posted on Feb 04, 2009

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I have a 91 caprice make knocking noise when I crank it


if auto , check the flex plate at the torque converter for cracks
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possible big end bearing
possible piston or broken ring
test by removing a plug and cranking it replace the plug and go to the next plug
repeat the process until the knock stops with that plug removed

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How can I get my treadmill to stop knocking? I know it's not the motor.


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I have on 01 xterra-service engine light on-codes P1126 & P0325. I think the battery is about to go,could it be realated to codes? Otherwise what do the codes mean? Appreciate any help


Your battery has nothing to do with these codes. Your vehicles computers have detected a malfunction or failure in the system. This triggers these codes and sets your check engine light. Below I have listed the code meanings and some repair solutions.

P1126 - Throttle Position (Narrow Range) Sensor Circuit Malfunction.

Power supply for the throttle control motor is provided to the ECM via throttle control motor relay. The throttle control motor relay is ON/OFF controlled by the ECM. When the ignition switch is turned ON, the ECM sends an ON signal to throttle control motor relay and battery voltage is provided to the ECM. When the ignition switch is turned OFF, the ECM sends an OFF signal to throttle control motor relay and battery voltage is not provided to the ECM.

Possible Causes For P1126:
- Harness or connectors (Throttle control motor relay circuit is open)
- Throttle control motor relay


P0325 - Knock Sensor Circuit Malfunction

The knock sensor is attached to the cylinder block. It senses engine knocking using a piezoelectric element. A knocking vibration from the cylinder block is sensed as vibrational pressure. This pressure is converted into a voltage signal and sent to the Powertrain Control Module (PCM) or Electronic Control Module (ECM).

Possible Causes For P0325:
- Knock sensor circuit short to ground.
- Knock sensor circuit short to power.
- Knock sensor circuit open.
- Damaged knock sensor.
- Damaged PCM or ECM

Possible Solutions:
- Repair or resecure harness or connector
- Replace knock sensor Bank 1 (Bank 1 if applicable)
- Replace PCM or ECM

The P0325 DTC is a very common problem with Nissan vehicles. On most Nissan vehicles the knock sensor is located on top of the engine block.

knock_sensor_infiniti.gif

Jan 20, 2011 | 2001 Nissan Xterra

2 Answers

Knock sensor where is it located 2004 impala 3.8l


There are two knock sensors one for each cylinder bank

Knock Sensor (Bank 1) (3.8L VIN K)On lower left side of engine, near starter.
Knock Sensor (Bank 2) (3.8L VIN K)On lower right side of engine. See Fig. 3



emissionwiz_49.jpg

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1 Answer

The oil light is on. The motor isn't knocking. it


If the motor isn't knocking not even taping, I suspect that's it's your oil sending unit. Don't know where it's located on VW's but your local parts store sales clerk should or at least be able to look it up.

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1 Answer

I have a knock in motor


What is your QUESTION? If it is knocking, it needs a head or a motor.

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1 Answer

I have a 1991 Olds custom cruser that pingsthe motor ping


Either your valves are knocking. Your IAC (Idle Air Control valve), or your knock sensor. The only thing is that if your knock sensor is bad it would throw a code. Your caddy could be the problem but again it would throw a code

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Engine Knock on a 98 Isuzu Rodeo


Most likely it is a rod bearing and motor would have to be dissassembled to diagnose, you might want think about installing a low milege used replacment since it was run 5 quarts low on motor oil.

Nov 26, 2008 | 1998 Isuzu Rodeo

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