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As some of you know, I have a 95 mark viii motor and trans in my 67 f100. I've seen threads about converting an entire car from obd1 to 2, and it being a nightmare. How hard would it be to convert just the engine?

Ok good info. And thanks for trying to find that for me. For the price I'm just going I up put a new one in. I have a feeling my issue may be stock computer related. It's a bit confused with so many systems no longer on the engine

Sorry... I bought air charge temp sensors, or IAT........ Not IAC. My phone must have corrected that without me noticing. I'm looking for the values for the IAT.

Update. I bought a IAC sensor. But I tested the line in plug. Had continuity on the ground side and 4.7 volts in the 5v reference side with the key forward. That seems ok. I tested both sensors, new and old and they both have about 65ohms on the 200k ohm setting. This is in my cold garage. The...

Great info. I'm not at my truck now but I'm sure I used whichever oil was recommended on the cap. I know I used synthetic oil but not certain at the moment if it's viscosity. I'm going to change the oil before I run the truck this summer so I'll use 0w30 synthetic for sure!

I'm pretty new to the mark viii world and I'm really thankful for the help I've received from you all so far. I have a 95 mark viii engine and trans in my 67 f100 truck. The engines previous maintenance is unknown to me but I've tried taking care of it since I've owned it. My question is.. Are...

I wouldn't know where to begin tuning it. Lol. Unless it's a matter of answering some questions and letting it tune itself. I'm totally clueless when it comes to that kind of stuff

No problem at all. I appreciate any help I can get. Side question... Can these computers be tuned?

My engine is from a 95 with a obd1 port under the hood. I was planning on buying the innova obd1 scan tool that actually gives codes rather than counting flashes. Sorry if I wasn't clear on that

Awesome info. Thanks so much! Quick question.. I can use a Obd2 scan tool?

The evap system was deleted alsoi believe. Basically running the engine and trans only. I have a factory tune as well. I was wondering.. Would the air charge temp sensor be a part of it? I know it controls fuel also. Other than the MAF sensor, it's the only one I haven't changed.

Also. A mechanic friend of mine mentioned a vacuum leak. If the engine is cold it may suck excess air through a gasket. I fired it up cold and sprayed break cleaner all over the engine. I sprayed intake, vacuum lines, you name it, and had zero surge. So I don't think I have an obvious vacuum leak.

It's definitely cold/cool weather related. It is even "cold engine" related. I notice it most in fall temps but I believe it even does it if I fire it up to go home for lunch on a nice day. I deleted the egr as well. Not sure if that matters.

Yes. Original MAF. I've cleaned it really well (what I thought was good) and it may have been a but better. I was leaning to that as well but I thought I'd clean it first. They aren't cheap! Lol.

So at first glance my pressures seem good. I didn't however try it key on/engine off. I'll have to try that when I get out there again.

That's a good question. I did change the o2's but I was having the issue before as well. I haven't noticed any difference since swapping them. If have to look back a bit to see which ones they are.

It does! Thanks!!

LocationOntario Canada Hey everyone. My situation is not as common as some but I'll fill you in. I have a 95 Mark viii motor and trans in my 1967 f100. I used the factory computer and wiring. I'm using a walbro gss342 (I believe). 255lph pump with a fuel cell. Truck ran great. I notice though...

Hey everyone. I'm sticking a 95 mark viii motor in my 67 F100 and I'm confused on a couple wires. I had some help from a guy who sent me some diagrams but I can't figure out what a couple wires do. Plug c121m and c121f. Pin 10 and 14. The guy had them labelled Dcim + and Dcim - Does that...