EEC IV ?

[MDDYATV]

If I disconnected the plug at the dizzy would it still run?

 

[firelt90bronco]

Why??? Did you do something?

 

[MDDYATV]

I am about ready to convert it over to a HEI and get rid of the system all together but my Dizzy is on back order for a couple of days. half of the sensor and vacuum lines were disconected by PO. I am just excited to get started on it and want to put on my new carb. but I need to drive to work.

 

[BLADE262US]

HMMMMM what are you doing ??????? /emoticons/[email protected] 2x" width="20" height="20" /> Well its an 84 right ? It shouldnt have an EEC that would have been late 86 . It should have a box mounted over on the drivers side fenderwell that the wires from your dizzy go too that is a duraspark box and the color of the strain relief for the wires coming out of the box designate what motor it is for V8 , V6 , 4cyl . So yes if you unplug it it will die immediately . If it did have an EEC it would have a TFI or thick film ignition dizzy that has a wide plug at the dizzy and again if you unplug this it will die immediately . The only other plug that you might possibly be refering too is a jumper plug with 2 wires located near the TFI dizzy this is called a spout connector if you unplug this you stop the EEC from having any timing control this is needed to set your base timing but once that is set you plug it back in and youll hear the rpms come up and if you check with a timing light the timing is no longer where you set it because the EEC doesnt want it there . ( base timing is just for mechanical timing the EEC adjust to where it needs to maintain RPM ) Kinda like vacuum advance you always unplug it to set base timing . ANyway to make a long story short if this is the connector your talking about if you unplug it and run it it will run like shit if its either of the other 2 it will not run /emoticons/[email protected] 2x" width="20" height="20" />

 

[MDDYATV]

Blade It was a califonia Bronco let me find that pic of the dizzy

 

[MDDYATV]

Here is a pic of my dizzy

 

[BLADE262US]

Oh yeah it was an emissions guinea pig truck . That is an early EEC IV , The answer is still if you unplug that connector it will die immediately and you ahould also have the spout connector there as well if you look around that plug harness . /emoticons/[email protected] 2x" width="20" height="20" />

 

[MDDYATV]

Is there anyway I can rewire it to bypass the EEC to make it run better until my new dizzy gets here? its eating allot of gas right now.

 

[BLADE262US]

No easy way to do that the EEC controls everything you have there . It looks at the spark signal to fire the injectors and it has complete control of the timing . Make sure that spout connector is hooked up and also I know you said you have a 351 and they didnt use this on the 351 only the 302 but anything can happen in california . At the bottom ot the power steering hose by the steering gearbox there is a switch in that line . That switch tells the EEC to increase the timing when there is a pressure increase ( this was for the whimpy 302,s ) Now if that switch goes bad it can make the timing ****** and stay there providing very poor performance . Just something to check . Tha 351,s also dont use a knock sensor which the 302 does . /emoticons/[email protected] 2x" width="20" height="20" />

 

[MDDYATV]

I have a carb not EFI does that make a diference?

 

[BLADE262US]

Yes that makes a difference you cant have an EECIV then it must be an EEC III that has a servo on the side of the carb that it can raise the idle and such it was an early emissions control system also controls the timing . If you have a dizzy out of a normal duraspark 351 it would work in there and you would just have to wire up a duraspark box to it also have to make sure you dont have a roller cam ( doubtful ) or it will eat the gear off a regular dizzy . Thats the only way around what you have there or maybe pop an MSD box on it with a MSD dizzy /emoticons/[email protected] 2x" width="20" height="20" />

 

[MDDYATV]

I am getting an HEI Dizzy and yes it does have those sevos on the carb. I was told it was an EEC IV anyway I am removing it. when I get the HEI. so are you telling me that a 302 dizzy would work in my 351w

 

[MDDYATV]

So I cant install my new Holley Carb until I get my new Dizzy?

 

[BLADE262US]

OOOOPS had to go back and edit that no a 302 dizzy wont work in a 351 the oil pump drive in a 302 is 1/4 hex and a 351W is 5/16 hex otherwise it would . Anyway Im sure you have an EEC III it does have control of your timing so your best bet is ta make sure that HEI dizzy your getting is stand alone then youll be fine with your new carb . I would pull that EEC completely out do not try to tie it into any of your new stuff . Also I would look at MSD for a dizzy thats all I run very high quality . /emoticons/[email protected] 2x" width="20" height="20" />

 

[Mike @ Tracy]

Hey MDDYATV Please keep the Qs coming, I'm saving all of this stuff about you're rig for when I do mine. My 300-6 has all the same stuff as you. Including the servo on the 1 barrel carb. The f@#$% servo seems bigger than the carb!!!!!! LOL