Ford Ranger / B-Series :: 1994 B2300 ECU Relay Intermittently Does Not Come On
Aug 7, 2012
Ok I have 94 B2300 and about every 3rd or 4th start the ECU relay will not come on / energize which the the fuel pump relay doesn't come on either to prime the fuel system... so no start! It's very intermittent and sometimes the only way I can get the truck started is by pulling out the ECU relay and plugging it back in even sometimes that doesn't work too. Is it a bad relay or bad base the relay plugs into or is the ECU/computer going bad or is there wiring messed up in my ignition switch? Is there a known problem like this with these trucks?
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Any known problems with '94 Ranger/B2300 gas gauges? I just got a '94 B2300, and gas gauge reads empty with the key ON, and about 1/4 tank with the key OFF. Was told by previous owner it occasionally works, but I've never seen it work. Am starting to procure manuals and dig around the truck myself, but don't want to re-solve the problem if it's a known one. Haven't seen mention on the net of it being a recurring problem, but just starting to dig.
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I bought the 94 B2300 from a guy that said he got it from an auction and didn't know much bout it. Got 30 mins down the road and went to down shift to 4th coming into town and all I got was grinding. Turned it off and it would go into other gears and start in gear with the clutch pushed in. Wen I tried to take off it wouldn't move and just died. Towed it home and installed a new clutch kit in it. Got the clutch bled and went to test drive it and now it is stuck in 1st gear. Can it be easily fixed or am I going to have to replace the transmission...
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I have a 1997 Mazda B2300 with 175,000 miles that has an intermittent check engine light. When I check the code it is always P0420. If I leave it alone long enough the light usually goes out. The truck had the catalytic converter replaced about 5 years and 60,000 miles ago. I also had the muffler replaced in October, but I was getting this code prior to the muffler replacement. I recently bought a scanner that can monitor the fuel trim data and noticed that the long term fuel trim is generally between +16 and 18%. I replaced both oxygen sensors last week and cleaned the MAF sensor, but today I got the CEL again. The LTFT is also still the same as it was before I replaced the O2 sensors. My truck doesn't use any noticeable amount of coolant or oil and I'm not really sure where to start.
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Took my 96 B2300 2WD SE (190k) to lunch. When I went to start it back up afterwards, the key turned but no starter engaged. All the dash lights came on, and now stay on. With the key in, I can turn the ignition freely...no clicking to different positions.
It springs a little when I turn it all the way, but still no starter. When I remove the key, the dash lights stay on, etc. So, since it was on, we were able to push-start it. I've parked it on a hill for now, and will disconnect the battery when I get it home.
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I have 2008 mazda B2300 pickup with P1633 fault code. Is this a mazda code (battery overcharge) or ford code (KAM voltage low) since it's a re-badged ranger? Alternator output measured at battery is 14.4 vdc.
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Mazda B2300 2.3L 1995 model... About a week ago I ran my B2300 out of gas (or so I was convinced I was out of gas) because the engine quit running. After adding gas was unable to start it back up. It turns over but doesn't start.
Here's what we did to try and fix it:
1.) Replaced Fuel Filter
2.) Check the fuel pressure, and it was at 35 psi when the key was on
3.) Replaced all 8 spark plugs (4 cylinder truck btw)
4.) Checked spark of all 8 coil pack slots and 1st and 3rd slots (exhaust side) were not sparking. After replacing coil pack we received spark but truck still didn't start.
We're speculating on the possibility of it being the PCM (ECC).
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I am working on a 96 Mazda b2300 auto 2wd for a friend. His son was driving it when a loud noise, it died and wouldn't start back up. He had it towed to my house, I started to tear into to it and found it slipped the timing belt. So a rebuilt head, gaskets, timing belt, fuel injectors, water pump, thermostat, plugs, and fluids; tried to start it and nothing. Started troubleshooting and found the primary coil pack was out of spec, replaced and still nothing.
Changed out the CKPS still nothing? I have spark, I have fuel, I'm going to check compression tomorrow but the way the cylinders and pistons looked I don't think that is the issue but I going to check anyway, rechecked the timing marks they all lined up. Checked the fuel inertia switch not tripped. Could the PCM, or ICM cause a no start, and still be able to get spark and fuel?
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I'm about to tear into a friends 2002 B2300 4 cyl. The lower hose that comes off of the coolant reservoir is leaking in the metal part of the line. Close to where it bolts to the block. At a glance, it looks like I have to pull the whole top of the motor apart to get it off since the line runs around behind the motor. Is there a trick to removing this coolant line without a lot of teardown? I'm not finding it at parts stores so I guess it's a stealership part.
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A cousin has an old 1994 Ranger. The fuel pump relay, located in the engine compartment fuse box. went bad, so he got a new relay.
Now, it does not plug in securely, so sometimes he has to open the hood and fuse box and wiggle it to make contact.
Ideally, one would probably replace the fuse box, though that would apparently involve a lot of wiring, right?
How to "cob" this up so the contacts will make better? Perhaps something to put in the slots to increase pressure on the blades?
Maybe gently twist the blades so they go in at an angle? Maybe touch the blades with a solder iron and put on a small blob of solder to make the blade bigger? (Though it seems to me that solder is not a good contact material?
Maybe solder to the blades, a very small piece of brass or similar material? Put a piece of aluminum foil over the blades?
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My '94 4.0L XLT has hesitated to start a couple times lately. Then, after sitting for a week while we were on vacation, the truck would not start at all today.
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I read about the fuel pump relay, so since I am not made of money, I decided to change that first ($16 vs. $100). After installing the new relay, the truck started! I put the old relay in the box and tossed it into the glove box.
After lunch, and some thought, i decided I wanted to put the old relay back in and see what happened. Guess what! It started with the old relay as well! I also noticed that the humming/buzzing sound the fuel pump makes when the switch is turned on was different with the new relay vs the old one. I put the new relay back in, but now I am unsure where my real problem lies. Intermittent relay, or fuel pump on its way out??
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I recently got a ranger from my buddy and it keeps blowing the EEC fuse in the engine compartment. We have replaced the EEC relay and the EEC power relay. As soon as you turn the key it is blowing the fuse.
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My friend has a 98 ranger that has a lose connection on fuel relay under the hood, Hit a bad bump truck dies, Pop hood wiggle wire and your good till next bump. This got real old real quick. How this connection is made, Is it soldered?
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I've been driving 93 ranger 3.0 4wd since last fall. first week I went to start and fuel pump relay had blown. I put a new one in and been driving since fine, till today. Now when I try to start, if it starts it will run fine all day as long as you don't turn it off. If you turn it off and restart half the times it will pop relay again. My fuel gauge has been stuck on full since I bought it also. I'm wondering if maybe pump has got had to start and drawing too much current...
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Ranger wont fire! fuel pumps not pumping..... Jumped fuel pump relay and got both pumps working, but while jumping relay and cranking motor, still no fire. Plenty of fuel pressure though. got spark too. Replaced relay and no pumps working while key is turned to run or while cranking. I got to get this sweet puppy back on the tarmac...
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Can't seem to figure out what is making this clicking noise. It comes from under the dash, drivers side, under the steering column... Now as for when this happens, anytime! Truck on, idling, driving, truck off, key turned to acc or key to on. Also happens even when key is not in ignition?! What this could be? Brand new battery and connecting rings/wires.
Additional info: 1996, 2.3L about 150k miles on her and she's still going strong
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My 94 ranger, 3.0 v6 began to sputter and jerk about a month ago. It does this when ever give more then lite throttle up until about 3000 rpm. I have replaced plugs, wires, coil and cleaned the air flow sensor. I feel like this has worked a little but the problem is still definitely present. When I hit 3k rpm if feels lie the truck begins to run correctly and almost like it had a power ban much like a dirtbike, but again it's just the truck running correct.. And above 3k rpm it runs great... and every so often the problem will completely disappear for 5 minutes or so, then come right back.
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I have a 94 2wd 4.0 auto 3.08 rear end it has 195,000 im gettin 15 city 18 hwy I used to pull 24+ hwy I changed plugs and wires no change? It has the 4.0 tick but its always had it....
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Working on a friends 94 ranger, 2.3 L with codes 218 and 998. Chiltons manual does not even show this code. Code is for Loss of Ignition Diagnostic Monitor (IDM)/left side. What exactly is this? Can't find anything that explains the IDM.
998 means a hard fault.
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1994 ranger 3.0 .. New: water pump, htr. hoses, radiator, thermostat, pulled & flushed htr. core. (2 year time frame) ....
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I have a 1994 Ford Ranger 4.0L 4x4, 130,000. I love this truck but about a year ago it started not starting after it warmed up short distances in the summertime? It start right up on cold crank...Runs smooth idles like a champ...but if i shut it off..wont start for 20 to 40 min??? It doesn't happen in the winter months??? So I changed the fuel pump, filter, relays. I feel like it has something to do with the Ignition Control Module. Would that come up in a code?
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