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You need to find out what missing at the injector connector, get a good wiring harness diagram. One side has voltage & the other is a ground. Do a continuity check between the inj. connector & the ecm & anything else thats on the diagram. The ground side pulses when cranking.

The egr valve should never open at idle, so hook a vacuum gauge up to the egr hose & hook up the solenoid, when you start it there should be no vacuum on the gauge w/ either the electrical connector plugged in or not. You need to start by checking for vacuum leaks, they cause high idle issues...

There are several coolant sensors, one for the gauge (drivers side head), one for the fan (pass. side head), & one for the ecm (front intake). If the one in the intake is acting funny it'll make your car run bad, usually rich. I like to replace it w/ the newer style sensor & connector. Get one...

Did you reset the throttle postion sensor after the balancing?

I wouldn't say it'll understeer like crazy, these cars have some pretty sticky tires. I once had a 3rd gen base camaro, went from only a small front bar to thick irock bars front & rear. Stock springs, shocks, & struts,it drove very well. I'd be worried more about having a good alignment, not...

I know the parts stores carry the inj. o rings.

There's a guy who put one in a 3rd gen camaro, look on 3rdgen.

It probably is running rich, these injection systems are senstive vacuum leaks. I'd check all the hoses & grab the throttle linkages & see if there loose, a common problem. Check the coolant temp sensor, these have an early style connector thats been a problem. You can splice in a newer style...

Bolting in the engine is the easy part, its all the wiring, relays, ecm, ducting, ect...

Check the fusiable links, might have some at the battery & starter. Use a test light to probe each wire a couple inches from where it hooks up.

Look on e bay for a Tech I, this was a GM only scanner. The Tech II is out there too, I know that one does OBD2 cars plus the earlier ones. The snap on red brick has been out there for forever also.

Did you change the coolant temp sensor? If you did, did you use an oem style? Those are troublesome, use one from a 88-up tbi truck(get the connector too). There are other cars that use that sensor, the parts store should have the connector too. Check that fuel pressure at the fuel filter...

Is the egr stuck open or is it getting vacuum at idle? You need to get a handle on that. Make sure the t-stat is good & at the oem temp rating (195*). Get it nice 'n warm for the test. Get a new pcv valve, replace any bad vacuum hoses. Change the oil if its due. If you have to replace the egr...

The dana 30 is a smaller diameter set, so its weaker then the 36. Thast all you need to know. You can find a complete 36 in a housing w/ 3.07 pretty cheap.

The regulator makes the pressure. Using a 85 pump in a 84 will not have higher pressure unless you have a restriction in the return line. Dead headpressure is when there is a complete blockage. Alot more fuel will be returned to the tank (in the return line) using an 85 pump. The regulator...

The egr valve might be stuck open alittle, or the egr solenoid is causing it to open. Try unhooking the vacuum supply to see if there is any diffence, you might have to pull the valve out & inspect it.

It would be worth the effort if DCS purchased a stock 84, tuned it up,tested it at the track & on the dyno. Then do the intake swap, & test it again. I guess it doesn't matter when you have a bunch orders of intakes. Wasn't there a magazine that was gonna do a story on the Renegade?

Those years don't have seperate pads/shoes for the parking brake. When you apply it, the cable pulls a lever that pushes the regular brake pad against the rotor. I'd look for scrape makes on the old rotor, maybe the bearing is going bad.

I'd first remove the drive belt to make sure its not a alternator, p/s pump, ect. I'd remove the valve covers to make sure its not a loose rocker arm. Its fairly easy to remove the oil pan, grab the rods & wiggle them. If you find one that moves, pull the cap so you can look at the bearing.

The chevy vega used an in the tank electric pump & they were carbed. I don't know what the GPH or max press. is though.