What does idle air control do on a GMC TBI?
What does idle air control do on a GMC TBI?
The voltage respond respectively with more or less vacuum. My Idle Air Control also responds accordingly by low counts when it runs good for 3 second and opens up when the engine is starting to stall and trying to keep it running . It dies anyway. I have new gasket on the base of the TBI assembly.
What happens when Ford 4.6L ignition module fails?
You can find this tutorial in Spanish here: Cómo Probar El Módulo De Encendido (Ford 4.6L Con Sistema DIS) (at: autotecnico-online.com ). In my experience, the ignition control module fails in one of two ways. The failure will cause a misfire condition. When this happens you’ll have two dead ‘Paired’ cylinders.
What’s the coolant temperature on a GMC TBI?
It was 108. 5 degree coolant temperature, in open loop, at idle and stumbling. IAC 160 steps, throttle sensor . 43 volts, map sensor 2. 15 V, rpm 800,egr duty 0%, throttle angle 0%, injector pulse 4. 3ms, knock sensor 179, engine run time 2 seconds, Well it is not an exhaust restriction. I dropped the exhaust piple down and started her up.
Why does my GMC TBI stop running after 3 seconds?
I’m thinking that 3 seconds of running is while the “after start” fuel enrichment is present, after that the mixture goes too lean for a cold engine/manifold. That could be because either the IAT or ECT is reading too high. Since this has a MAP sensor, I assume it does not have a MAF sensor.
How many fuel injectors does a Ford 4.6L have?
Your Ford (or Mercury) 4.6L or 5.4L equipped vehicle has 8 fuel injectors and when one or more go BAD, they will cause a rough idle / misfire condition that will set the dreaded misfire codes: P0300, P0301, P0302, P303, P0304, P0305, P0306, P0307, P0308 and fuel injector Codes:
When do fuel injectors need to be replaced?
Retest the fuel injector that was not within the stated specification. If the resistance value is still the same and drastically different from the normal resistance value (or different from the rest of the fuel injectors), that fuel injector is bad. Replace the fuel injector.
The voltage respond respectively with more or less vacuum. My Idle Air Control also responds accordingly by low counts when it runs good for 3 second and opens up when the engine is starting to stall and trying to keep it running . It dies anyway. I have new gasket on the base of the TBI assembly.
How to test the fuel injectors in a Ford?
Once you have unplugged the fuel injector connector from the fuel injector… place your multimeter in OHMS mode and probe the fuel injector male spade terminals.
