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What I understand from my research and talking to various mechanics in the area, the pre-OBD vehicles like the RENIX will tell you the real time sensor readings. Since it doesn't store data, there aren't any error codes, but it still has data coming and going. Plugging in is essentially...

Update: Idling is alright initially. Just after revving high, I can see smoke or exhaust seeping out over the engine. It could be from the exhaust manifold or the fuel injectors. I recently tried to swap out the injectors, but they are stock and o-rings are all in good shape. While crawling...

Well, unfortunately it seems the device I was loaned is for OBD-1 vehicles and not compatible with the Renix. So I'm back to standard trouble shooting. I was at a loss as to where to go next in my investigation (which is why I wanted to see the running values). Any advice? Symptoms...

I'm having an issue with my 89 Cherokee running REALLY rough. There is blue smoke coming out the exhaust and it's idling lower and lower until it's almost sputtering out. One of the mechanics at my work loaned me a diagnostic tool to plug into the pre-OBD computers so I can see if any sensors...

Rear driver side https://secure.shoeboxapp.com/photo/aea2a5a384b2dc25020ebcf1aa467b6a842738ab96533158ecea26b5e7aa094702 The guy who built my jeep said the drive shaft is ready to accept a "flange" for a mechanical disk brake setup...

That was kind of what went through my head when I first saw it. I have learned a lot about wiring just in the last 2 weeks and it seems like whoever had the Jeep last knew enough to make some circuits work but not enough to spend the $30 that would have made them all legitimate with bought parts.

I'm still learning about the wiring, but I solved some of the problems. The power cable from the alternator to the rest of the system was either glued or taped to the connector on the alternator side. A total hack job by one of the previous owners. I replaced the cable and charged the battery...

I decided to try this on my 89 Cherokee, not realizing that it was different (being a Renix). It idles pretty low now and the RPMs slowly drop until it sputters out when idling. It's also putting out a lot of slightly blue smoke with the exhaust. My more knowledgeable friend said it's running...

So I can't attest to the bad grounds, yet, as I'm still learning how to properly use my multimeter, but I have a new symptom. Jeep didn't start recently, so I jumped it and checked the current from the battery terminals with the engine running. At the very least, the alternator isn't fully...

Yeah the more and more I see, the more I'm coming to that realization. Last time I was at the junkyard, I took a look at the parking brake on the most recent wreck (the rest are skeletons right now). It looked pretty corroded so I didn't bother trying to extract it, but I got a good look at...

I'm not sure. The jeep is fairly new to my possession and I'm learning as I go. Is there a way I can find out? The guy who put the jeep together said that he swapped the brakes to a type that brake a bit slower but are designed not to pull the vehicle to one side when braking hard.

I think it was the hydraulic one that was mentioned to me. As far as the current situation goes, there's no handle or cabling for the parking brake and I couldn't see the shoes either. It's a standard transmission so all I have is the gears to keep it from rolling away.

I heard about an emergency brake upgrade or replacement that clamps the drive line in place, preventing the wheels from moving at all. It seems like a great upgrade to have if you need to winch another vehicle. My Jeep didn't have an emergency brake when I got it, so I figured I may as well...

I have and 89 Jeep Cherokee that's had some modifications from a few previous owners. I'm learning about fixing vehicles as I encounter the quirks on this one. There's a weird issue where the radio shuts off when the headlights are turned on. It immediately turns back on when the headlights...

I thought it sounded like a slipping belt. It didn't occur to me that the added resistance could cause it to slip only when turning. Tightening seems to have fixed the sound, so that's probably what it was. I didn't have a gauge, but one of the things I read online was to tighten until the...

Alright, we finally got the injectors in. One of the o-rings tore when pushing it into the fuel rail. They came with the used injectors, but were in good condition, other than the one that tore. We replaced the torn one and tried to start it. The o-ring between the fuel rail and the fuel...

Sorry if these are dumb questions, I'm very new to engines. What is the box and where is it?

Well I had gone lock to lock probably 10-15 times before. I just tried doing it another 30 and the screeching has returned. Particularly when turning hard left. The resistance has gotten worse, again, on another test drive. It does seem to happen at particular and consistent intervals in the...

We started the engine several times, filling to the line each time. Then we rotated the tires from one extreme to the other, filling between runs. It's maintained its level the last couple times. I thought that meant the air would be out of the system. Am I mistaken?

Hey, guys. 89 Cherokee 6 cylinder 4.0L Here's the problem: When turning the wheel, it's difficult for a few inches and then gets easier. Then it gets harder, and then it gets easier. This happens in both directions. When I checked the fluid, it was almost off the dipstick. I filled the...