7 votes
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Oily Sludge in the Intake Manifold

The oil stuff is more than likely caused from what the intake pulls out of the crank case through the PCV. If you can get a hold of a couple cans of Seafoam, this should take care of the residue ...
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6 votes
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Do I really need to care if my car burns oil?

You said "valve gaskets" but I'm going to assume you actually mean the valve seals. Since you are seeing a small puff of smoke sometimes during startup and when you are accelerating, these are usually ...
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4 votes

Fast Idle and High Fuel Consumption

I think you need to do a throttle position sensor recalibration (reset). (NOTE: I will post several different adjustment versions. I believe the top one is what you need (for a K8 engine), but will ...
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4 votes
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Testing PCV: Constanct Suction or Pulsing Suction

The pulsing should not be a huge issue. Remember that your 4-cyl engine will not have a constant vacuum associated with it as it is only drawing it twice per revolution of the crankshaft, which means ...
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4 votes
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Changed O2 Sensor and my mileage went down

Disconnect your battery to reset your ECU. It won't hurt, and is probably the cheapest and easiest thing you can try. 30 minutes is usually enough. There are other theories as to why your mileage ...
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3 votes

97 Mazda 323: Where is the IAT sensor?

OK, so it seems like the IAT on this model is integrated with the MAF:
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3 votes
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Mazda 323: Plugged in Coolant Temp Sensor - Now Car won't Start

This absolutely could be the issue. On fuel injected vehicles, the coolant temperature sensor is one of the key sensors used (O2, MAP, & MAF are others) in calibrating the fuel map stored in the ...
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2 votes
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Mazda 323: Does the EMU / ECU learn?

Yes, most car ECU's learn. I'm going to assume yours is no different. If you decide to replace the coolant temperature sensor, I'd disconnect the battery at that time. When you get everything back ...
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2 votes
Accepted

Fast Idle and High Fuel Consumption

This particular problem was solved by replacing the coolant temperature sensor and installing a thermostat. Apparently the coolant temp sensor was telling the engine it was -20C and so it was ...
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2 votes

Fast Idle and High Fuel Consumption

I had the same issue. I just managed to soft it. There may be a few causes to this, but for my case, I found that the idling air intake hose connecting the lower part of the throttle body was missing ...
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2 votes

Do I really need to care if my car burns oil?

I asked this same question to the workshop that performed the headjob on one of my cars and they said that apart from a bit of smoke, it wouldn't be anything to worry about. As long as there is enough ...
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2 votes
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Bad dashboard coolant temp sensor?

I would think your issue would be the sensor (aka: sending unit). The temp sensor works on a resistance scale. The hotter it gets, the more resistance is given in the circuit (or maybe it's the other ...
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2 votes

Mystery Sensor on Manual Transaxel Housing

Since you said the reverse lights are still working, it's not the reverse switch. This switch signals to the engine computer if you are in a gear or neutral. The computer uses this switch to ...
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  • 658
1 vote
Accepted

Falling RPM's and Stalls after Releasing the Clutch

This sounds like a problem with the Idle Air Control (IAC) valve, or something in that general vicinity. You should try to clean it and the upper intake tract.
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1 vote

Bad dashboard coolant temp sensor?

Engine coolant temperature gauges are not "linear". It is quite common to see gauges which indicate the same temperature level for the operating temperature range that is deemed "normal". Having said ...
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