Ford Ranger / B-Series :: Engine Hesitates - Got 157 And 158 MAF Sensor Fault?
Problem: engine surging/hesitation, from idle to highway speeds. It will start and run fine, just hesitates/surges when gas is applied.
Before I pulled the codes, I tried seafoam in the gas tank, cleaned MAF sensor, cleaned throttle body, checked air filter, changed fuel filter, pulled/cleaned plugs, nothing worked.
Then today I finally used a scanner and pulled codes (my CEL doesn't work) and I got 157 and 158 MAF sensor fault, high and low voltage. I am reading about 6v on the C and D terminals of the MAF, I know that is much higher than normal, but what does that tell me? Why both high and low voltage readings? Just a bad sensor, or wherever that voltage comes from, ECM?
I also pulled 189 HEGO H02S sensor fault, unable to switch/lean during part throttle. What does that mean, just a bad O2 sensor?
Last I pulled a 542, fuel pump secondary circuit fault. Does that mean the fuel pump is bad or going bad?
More importantly, what should I troubleshoot first, would any of these codes cause my problem?
Ford Ranger / B-Series :: 1999 - Hesitates To Start And Won't Run In Morning?
I have a 1999 Ford Ranger and every morning when I go out to start it, it really hesitates and doesn't want to run for a few minutes. once it's going it's fine I can shut it right off and it starts fine, and I can leave it all day from 9am to 6pm and start it again at 6pm and it doesn't hesitate, it fires right up.. it seems like it only happens over night..
When I hooked the code reader up, I get codes P0171 (too lean bank one) & P0174 (too lean bank two)
I also get for the I/M readiness status, that the
EVAP - NOT RDY,
O2S - NOT RDY,
HO2S - NOT RDY
Just want to say also that the shop I had put 2 oxygen sensors in not long ago.=
Ford Ranger / B-Series :: 2002 - Trans Hesitates - Shakes At 65 - 70 MPH?
02 ranger 4.0 v6 auto has 110000 miles on it. at highway speeds 65-70mph feels like it strugles to shift, truck will shake and bounce some. when this happens rpm's jump from about 2200 to 3000-3200 after a little bouncing rpms drop to normal. issue seems to be the worst going up hill but will happen every time i hit 65-70. Also the truck will not bounce or shake with the OD turned off and seems to run fine this way.
tranny fluid/ filter just replaced with no change. new plugs and wires
Ford Ranger / B-Series :: 1990 - Hesitates At Start Up Like Not Getting Fuel?
Mine has a strange issue. 1990 xlt 2.9L manual 4x4. When first start of the day, after start I push accelerator and it has a hesitation like not getting fuel. Where start?
View 1 RepliesFord Ranger / B-Series :: 1997 - Transmission Hesitates / Struggling To Shift Into Gears?
1997 2.3 5 Speed. My poor truck is having a hard time shifting into gears. I have bled the master off the truck with the correct method, bled it on the truck with the hose on the slave method while pushing the pedal and multiple times with no bubbles coming out at all, no leaks, etc.
Here's the breakdown -
- Clutch, slave cylinder and shifter bushings replaced about 3 years ago (everything has less than 7000 miles on it)
- While driving and pushing in the clutch, it clearly disengages, although quite a ways down.
- Only shifts hard while running. If I sit with it off with the clutch in, I can shift through all the gears with no effort whatsoever. At times while driving, it gets so hard to shift that it may become dangerous.
- Only things I haven't replaced are the master cylinder and the flywheel.
Should I just assume a bad master and just replace it? It's the original with 188,200 miles on it.
Forgot to mention there are times that when I am at a standstill trying to go into reverse, it grinds like the transmission is still engaged.
Ford Ranger / B-Series :: 1994 - Jerking Below 3k RPM?
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.
View 1 RepliesFord Ranger / B-Series :: 1994 - Mpg Dropped - Fix?
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....
View 7 RepliesFord Ranger / B-Series :: 1994 - Got Codes 218 And 998?
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.
Ford Ranger / B-Series :: 1994 - Low To No Heat
1994 ranger 3.0 .. New: water pump, htr. hoses, radiator, thermostat, pulled & flushed htr. core. (2 year time frame) ....
View 5 RepliesFord Ranger / B-Series :: 1994 - Won't Start After Warm Up?
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?
View 13 RepliesFord Ranger / B-Series :: 1994 - Battery Keeps Running Down
Got a problem with the '94 Ranger. Something keeps draining the battery. For reference, the truck is an XL, manual 4x4, 4.0L, 5-speed. I've been trying to keep driving it so I could try and diagnose the issue. At first, as long as I cranked it every day, it stayed charged up, but now it has gotten worse. It will run down in an hour or two. I know figuring this kind of problem out is tough, but I thought maybe some others of you may have experience in this area that might benefit me.
Based on a gut feeling, my first idea was that there was something going on inside the AC compressor. So, I disconnected the compressor, but that wasn't it. My plan at the moment is to replace the wiring harness between the battery and the starter. The current harness is pieced together (not my doing), and whether it fixes this problem or not, it needs to be done. Another thing I've thought about is the ignition switch. It acts "funny" to me, but it has never really given any trouble.
My son needs to take this vehicle back to college with him in a couple weeks, and I need to get it figured out.
Ford Ranger / B-Series :: 1994 4.0 Sometimes Will Crank And Not Start
94 Ranger, 4.0, Automatic, 280k miles. Normally starts and always runs fine. Sometimes will crank and not start. Fuel pump replaced Feb. 2015 and again Dec. 2016. Have had it towed 3 times. Always starts when it gets to the mechanic. Sort of reminds me of vapor lock on the old cars with carbs, because if it sits long enough after not starting, it will start, no problem. Never died out or even coughed when running and plenty of power. When I take off the gas cap, it sucks in air like a whale. Twice I did that and it will not start right away, but if it sits for an hour or so, it starts no problem. Just bought a new gas cap 10 minutes ago and looked in a Haynes manual and a " gas tank vapor valve assembly" is mentioned. I don't want to change parts just to see what happens. Mechanics say there are no codes shown.
View 1 RepliesFord Ranger / B-Series :: 1994 - Headlights On At All Time / Won't Come Off
The headlights on my ford ranger 1994 won't come off. All fuses are good and wondering the next step?
View 9 RepliesFord Ranger / B-Series :: 1994 - Only Goes In Reverse When Warm?
I have a 1994 Ford Ranger XLT xcab with a 4.0 engine.It will take off and drive in the freezing cold but when it warms up it will only go in reverse.Once in awhile it will go into drive.What seems to be the problem. I had also backed up over a railroad tie in an icy parking lot but still drove away.
View 3 RepliesFord Ranger / B-Series :: 1994 - How To Check Code For CEL
1994 Ranger xtra cab
4x4
v6 4.0
5-speed
113K miles
Just bought this truck. When I test drove it no "check engine" light came on, but after purchase driving home is came on and then off many times. It only comes on at high rpm/speed. I have my trusty ODBII scanner but realize that this 1994 was pre-ODBII. How can I figure out what the CEL is about?
Ford Ranger / B-Series :: 1994 - Running Rough At Idle?
Engine runs rough at idle. Two plugs are black and just replaced head gaskets. I installed new short block and new heads six months ago. I can't seem to figure out the problem and I would like to trouble shoot more before tearing heads off and going any further.
View 2 RepliesFord Ranger / B-Series :: 1994 - Engine Cranks But Won't Start
My kid is using my 94 Ranger with 215,000 miles. It quit while he was on his way to work. Engine cranks but won't start.
Fuel pressure at rail was 12 psi (Key on eng. off). I replaced fuel pump. Pressure at rail up to 20 psi. Still cranks, no start.
I replaced fuel filter. Pressure at rail up to 30 psi. Still cranks, no start.
Replaced distributor cap/rotor and plugs. I have spark at plugs.
Chiltons from 1994 doesn't list a rail fuel pressure. I see new fuel pressure regulators are set at 41 psi. I pulled mine and hooked air to it. It (FPR) cracks at 37 psi. I have lots of flow returning to tank, so I assume the fuel system is working correctly. I've never replaced the timing chain/sprockets. Distributor rotor spins during engine cranking. When I rotate the crank pulley to 0 Top Dead Center the rotor is pointing to #1 on the distributor, so I don't think the timing chain has skipped a tooth on the sprocket??????
Ford Ranger / B-Series :: 1994 B2300 ECU Relay Intermittently Does Not Come On
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?
View 7 RepliesFord Ranger / B-Series :: 1994 - Turns Over Fine But Won't Start
My son's Ranger wouldn't start today, turns over fine, added gas to make sure it wasn't out still no hit.
Other than fuel pump (he said he couldn't hear it) what things should he check? I'll check back in the morning.
1994 Ranger 2.3 4 Speed ....