At this point, it could be a number of problems. IMO, these are the most likely problems:
- No Power to EEC
- EEC is bad (not likely)
- Wiring problem somewhere
- Distributor/TFI module isn't working so the EEC doesn't know the engine is turning over and thus doesn't know to fire the injectors
Even once you get things running, with more displacement and likely other mods to the motor (heads/cam/intake), it's not going to run right without a tune at cruising conditions. You could have it tuned by a dyno or you could do it yourself if you are interested in that sort of thing. The TwEECer RT (not the base) is one of the most powerful tuning and diagnostic tools there is for EFI systems. It will allow you to see most any sensor value as well as runtime values like RPMs, commanded injector Pulse-Width (PW), commanded spark advance, fuel trims (both short term and learned), acceleration and transient enrichment, Open/Closed Loop status, and a number of other things. Knowing what these values are during crank can tell you A LOT about where a problem is and at a minimum tell you where the problem isn't. So if you are a do-it-yourselfer kind of guy and don't mind a new learning curve learning the most intricate pieces and parts of the EEC, then the TwEECer can certainly help things and even help with issues like this one. It's helped me track down two very intermittent problems with my truck (bad ignition connection and bad EEC relay).
So what's the downside to the TwEECerRT and Do-It-Yourself tuning? Well for one, there's a huge learning curve to overcome. Two, it's an expensive initial investment. It's about $550 new I think just for the hardware. The software that comes with it SUCKS so you'll need to know that right off the bat so you can get another guy's software (BinaryEditor and EEC Analyzer for $100) that allows you to do the tuning and analysis of your data to be an effective tuner. IMO, these softwares should be what come with the TwEECer, but the developer/seller of the TwEECer is more interested in just sitting back and making money than he is at actually supporting his product. But the tuning community takes up the slack and supplies users with ample support and tools to use the product well. But if you just spent a butt-load of money on the TwEECer just to find out you need more software, you can begin to get pissed real quick.
Next, you'll want (not need) a wideband O2 sensor to tune out the Open Loop/WOT conditions correctly. The TwEECer will tell you what the EEC was trying to command for AFR. The wideband will tell you how far off the EEC was in it's attempts so you can make adjustments accordingly. The most basic widebands with no meter in the cab run about $180 on eBay. If you've abandoned/deleted your EGR, you can reuse the EGR position sensor input on the EEC for your wideband and datalog the wideband right along with all your other data through the TwEECer. However if you are like me and you need to maintain an EGR, then you'll need yet another piece of hardware called a DataQ which is nothing but an A/D converter that converts the WB's 0-5v signal to a serial communication the computer can use. BE can interface with the DataQ and datalog it along with your TwEECer datalogged info. The wideband O2 sensor isn't absolutely necessary unless you are looking for absolute MAX performance at WOT. But since most people are more interested in max power than they are at driveability, this is just one of the tools they need. I personally am far more interested in driveability than WOT performance since my Ranger is my daily driver. So I've gotten away for a few years now without a wideband, and instead just using the two narrow-band HEGOs the computer uses during closed loop. But I can honestly say that having a WB would've made my tuning experience easier and worth the money. Think of a wideband as like glasses for a person that can see, but just not very good.
Is there any good news? Yes. If you can buy a used TwEECer, then once you are done, you can burn your tune to a $60 Moates chip and sell the TwEECer for as much as you paid for it. The resell value of the TwEECer is amazingly strong. On the boards, I see used TwEECers selling for $450 all the time. I guess you could also sell the wideband too and recoup some cost there too. But personally, I have no plans to ever sell it. DIY tuning is an addiction that's got me hooked bad. I datalog almost every drive I make in my truck just to see how things are doing.
Well, that was a tangent-n-a-half. Back on subject...
...Always Somethin'
89 Ranger Supercab, 331, ported GT40p heads w/1.6RRs, Crane Powermax 2020 cam, ported Explorer lower, FMS Explorer (GT40p) headers, aftermarket T5 'Z-Spec', 8.8" rear w/3.27s, Powertrax Locker, A9L w/Moates QuarterHorse, Innovate LC-1, James Duff traction bars, iDelta DC Fan controller
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.Also in my harness there's no fuel pump relay and when i connect it to the ranger fuel pump wiring according to matt's instruction it doesn't do anything but since the ecm is not grounded I hope that this solves the problem.
