1994 ACT sensor help

[Stankard757]

I bought my 94 ranger 3.0L about 2 months ago and have been working through it's "quirks". Anyway the truck had no an air filter box or intake hose. It's been hard to locate one in my area So I threw together a temp fix to get it on the road that works great. Recently I noticed a hanging connector and learned on here it's the ACT. Guessing in a stock setup it was connected to the filter box. How important is the ACT sensor? My truck has run fine with out it and there's no lights/codes.

If it is vital to have I can always rig something up.

Thanks for any advice

 

[franklin2]

It works with the engine coolant temp sensor to trim the fuel.

I find it hard to believe it's not throwing a code. Have you tried to pull the codes? It may not turn the check engine light on, but there still should be a code in there. I would try pulling the codes just to get familiar with doing so, since you are doing all your own work. You should at least get a code 11.

 

[Stankard757]

It works with the engine coolant temp sensor to trim the fuel.

I find it hard to believe it's not throwing a code. Have you tried to pull the codes? It may not turn the check engine light on, but there still should be a code in there. I would try pulling the codes just to get familiar with doing so, since you are doing all your own work. You should at least get a code 11.

Even on an OBD1. Didn't think they stored codes. This motor was put in by a previous owner 4 mechanics and I have yet to find the OBD1 port, it's not where it's supposed to be. So I've been having to go old school on this pig. All we can think of is he tucked it in somewhere that we haven't found yet.

 

[franklin2]

OBD1 does store codes. The older trucks had the OBDI connectors under the hood.

Here's a link on how to do it with the larger trucks, it's the same only your connectors may be located somewhere else.

How To Retrieve Trouble Codes On Your EEC-IV System Without Using A Code Scanner

As of late I am seeing a lot of people asking about pulling the Fault Codes from the EEC-IV systems on their Ford Trucks. This is what I have always...

www.fordtruckzone.com

 

[franklin2]

Here's a post where someone asked the location question. 2 different answers, so who knows where you may find them.

OBD1 Location

Hey where's my OBD1 plug-in on my 1994 ford ranger 3.0? I went to plug my scanner in and it's not under the driver's side dash like i thought- am i just somehow missing it?

www.therangerstation.com

 

[alwaysFlOoReD]

On the rangers I've owned up to 91 the port is under the hood, passenger side, several inches in front of the firewall and AC unit. It can be buried behind the relays.

 

[Stankard757]

Here's a post where someone asked the location question. 2 different answers, so who knows where you may find them.

OBD1 Location

Hey where's my OBD1 plug-in on my 1994 ford ranger 3.0? I went to plug my scanner in and it's not under the driver's side dash like i thought- am i just somehow missing it?

www.therangerstation.com

Thanks definitely giving this a try

 

[Stankard757]

On the rangers I've owned up to 91 the port is under the hood, passenger side, several inches in front of the firewall and AC unit. It can be buried behind the relays.

Gonna take a look tomorrow if the rain stops

 

[alwaysFlOoReD]

The pic is on an 86 ranger. Typical location. Usually has a cover. I pulled this one up out of hiding. It's the red connector sitting on top of the filter box.