Heater Noises, Power, and MPG issues

[jzacher85]

So I have a 92 Loyale that I have done some work on and gone through and replaced a lot of the sensors and did a tuneup. I am getting around 23 mpg and I am trying to drive efficiently. When I am at a lower RPM and floor it it will lug and will not ramp up in rpm until it is over 3000.

 

When I turn my blinker on it makes the Voltage meter Tick.

 

When I turn my heater on I hear belts squeeling and I notice a decrease in power ( as if the Air conditioner was on). Sometimes when I stop and turn of the car when the heater has been on I can hear a bubbling in the dash.

 

I have checked for spark and some vacuum leaks. I have not done a pressure test on the fuel pump. I have been using good gas. I run 5w40 oil.

 

Please help I want this thing to be rolling tip top!

 

THanks,

Jesse

[NorthWet]

So I have a 92 Loyale that I have done some work on and gone through and replaced a lot of the sensors and did a tuneup. I am getting around 23 mpg and I am trying to drive efficiently. When I am at a lower RPM and floor it it will lug and will not ramp up in rpm until it is over 3000.

 

When I turn my blinker on it makes the Voltage meter Tick.

 

When I turn my heater on I hear belts squeeling and I notice a decrease in power ( as if the Air conditioner was on). Sometimes when I stop and turn of the car when the heater has been on I can hear a bubbling in the dash.

 

I have checked for spark and some vacuum leaks. I have not done a pressure test on the fuel pump. I have been using good gas. I run 5w40 oil.

 

Please help I want this thing to be rolling tip top!

 

THanks,

Jesse

You probably should be getting better mileage. My SPFI 3-speed automatic sedan got around 30MPG with little attention.

 

Which sensors dod you replace? Top of my list would e O2 sensor and the Coolant Tmeperature Sensor (CTS). Either of these can screw up mileage. Also, did you check/set the ignition advance? did you use the green connectors to check/set it, and did you remember to disconect them afterward?

 

Blinker might be a bad ground or power connection; others will chime in and give you better advice.

 

With the heater, the "Defrost" setting will engae the A/C, giving you your squeal and loss of power. If this happens on any settings other than defrost or A/c than it is malfunctioning. This may also be some of the MPG issue. The bubbling in the dash is probably air in the cooling system; pretty common to hear it while the engine is running as it passes through the heater core, not so common when engine is off.

 

GEneral consensus seems to be that 10w40 oil is too viscous for these engines. This is even more true with your winter weather. (I assume GJ, CO.) 10w30 would be better.

Edited November 21, 2010 by NorthWet