Does a 1994 have a Check Engine Light
Thread Starter
5 Year Member
Joined: Dec 2018
Posts: 4,436
Likes: 1,186
From: Ocean Springs MS
Does a 1994 have a Check Engine Light
Does a 1994 F150 5.0 have a Check Engine Light? I suspect the answer is yes but I would like to confirm.
The only thing that illuminates when the key is turned to ON is the ABS light and the seat belt light.
The seat belt light is going off and on and it appears it may be trying to send a code, two flashes followed by three flashes over and over.
Temperature gauge sits below zero at all times and he says it because it has an over sized radiator. Hose gets hot but not overly hot ( battery on my temperature scanner dead). 5 volts present at connector to ECT sensor
The seat belt chime has been disabled by disconnecting the connector that goes to the ECM (computer). BTW this connector is shaped just like the OBD1 connector under the hood and I suspect it carries circuits that may be important to engine function.
This is a buddies truck and I have no history but its got plenty of jury rigging and I am surprised that it even runs.
The only thing that illuminates when the key is turned to ON is the ABS light and the seat belt light.
The seat belt light is going off and on and it appears it may be trying to send a code, two flashes followed by three flashes over and over.
Temperature gauge sits below zero at all times and he says it because it has an over sized radiator. Hose gets hot but not overly hot ( battery on my temperature scanner dead). 5 volts present at connector to ECT sensor
The seat belt chime has been disabled by disconnecting the connector that goes to the ECM (computer). BTW this connector is shaped just like the OBD1 connector under the hood and I suspect it carries circuits that may be important to engine function.
This is a buddies truck and I have no history but its got plenty of jury rigging and I am surprised that it even runs.
5 Year Member
Joined: Oct 2017
Posts: 999
Likes: 178
From: Virginia
Check engine light is right above the ABS light. If it isn't lighting up when you first turn on the ignition, then ull the cluster and see if the bulb is burned out.
As long as the thermostat is operating correctly, radiator size will not prevent the engine from warming up. There are two coolant temp sensors on these trucks. The one by the thermostat with a two wire plug is used by the computer, and there is another sensor on the driver side of the intake manifold with a one wire plug, that sensor if for the gauge.
Unplugging the seat belt buzzer will have no effect on engine performance.
As long as the thermostat is operating correctly, radiator size will not prevent the engine from warming up. There are two coolant temp sensors on these trucks. The one by the thermostat with a two wire plug is used by the computer, and there is another sensor on the driver side of the intake manifold with a one wire plug, that sensor if for the gauge.
Unplugging the seat belt buzzer will have no effect on engine performance.
Thread Starter
5 Year Member
Joined: Dec 2018
Posts: 4,436
Likes: 1,186
From: Ocean Springs MS
New bulb fixed Check Engine light issue.
Good info "sensor on the driver side of the intake manifold with a one wire plug, that sensor if for the gauge". I will inspect/repair that one on Monday.
Good info "sensor on the driver side of the intake manifold with a one wire plug, that sensor if for the gauge". I will inspect/repair that one on Monday.