Explains the Shift Solenoid testing. Modern transmission use a specific combination of shift solenoid ON position the perform the actual shifting. This is called the truth table. Learn how these components work and how to test them. (note: Weallow all schools and training institutions to use our software free of charge, so long as it is not sold to others. You’re encouraged to download our free automotive simulation software for more information.
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@EdFnReed Sounds like you have a battery charging issue.
@EdFnReed Well with the C2500, depending on YMM, there’s a big chance you don’t have to drop the tranny, just the trans oil pan. Do a resistance reading at the wiring harness before you drop the oil pan. Identify the problem first before major disassembly, even for a trans oilpan. Both of these SS share the same power. So chances are the power feed is OK. Disconnect the trans connector and perform a resistance check. Good luck…
Ok i have a chevy c2500, and it wont shift from first. My lights start to dem if i drive past 3000 rpm’s, I put it on the computer and it said shift soleniod B, my two questions are , Should I just replace the solenoid B or both, and do I have to drop the whole tranny in order to do this?
@ADPTraining You can go with a used one. Sol either work or don’t. When you buy the used unit, momentarily activate it using 12V and ground, should hear it click. It’ll take more info to decipher which sol is which, but you can do this. It’s not hard. Do some web research, but it is safe to use a salvage yard unit, so long as you test it. This type of code is not generated by clogged hydraulics. You probably have an open circuit/shorted sol. Replace it and you should be ok. GOOD LUCK.
OK, lots of info, that’s good. DTC P0750 is usually a circuit failure. If is safe to assume the at least two or all shift-sol share the same power supply (12 v), so this is a sure bet. If only one DTC is in memory that the 12V power supply is fine. The TCM grounds the solenoid. In this case there’s a 99% chance that replacing the sol will solve the problem.
Need help: ’97 mazda protege LX. O/D light flashes at approx. 3 miles driven. Is in limp mode. Code pulls up as P0750, Shift Interlock Solenoid. Tranny was flushed and refilled. Filter not changed. Told it is the Shift Solenoid. Impossible finding part except in junkyard. 2 of same models exist. Is it worth trusting junkyard solenoids? 2 dealers faxed me exact same schematics. They don’t know where the solenoid is located to offer part number. Will do work myself, some opinions/advice?
OK, shift sol. codes are of two types: electrical faults (high, low or open circuit) and mechanical (clogged, ect). The DTC or code definition will actually guide you. P0755 is a general shift sol fault. Since no electrical fault is indicated you should lean more toward a mechanical fault, such as clogged or slipping tranny. Good luck and post back with more.
Hello i have a 99 ford expedition 4wd. showing a dtc SSB malfuction(P0755). Would this be an electrical issue or would it be ok to just change out the solonoid. Thanks in advance for your help.
It sounds like a vehicle speed sensor. The vehicle speed sensor tells the transmission computer the speed and rate of change. It is a major input to the TCM or trans computer and used for shifting. See the VSS video that we have for more on this sensor and post back with more. Good luck.
I have a 95 chevy half-ton with a 4L60E. It starts in 2nd and shifts to 3rd but thats it no 1st or OD plus the tach and speedometer quit working when the tranny started doing this and the check gages light flashes while driving. Cant figure it out I would really appreciate your help Thank You
162k mi. 4r5ee shift to 2nd problem; P error shift seleniod B stuck, adjusted band but no tension. Nothing in pan no debris ect. The video suggests its a worn out band or something else mechanical? Comment please.
Thands
97 f250 5.8 tranny slips. changed filter magnets had coating very fine slime 1/16 inch thick, drove for 3 days n slipped once on 4th day- hasnt slipped since but havent been driving much. slipping in D and OD. please help
@ADPTraining I own a 97 Grand Cherokee. My trans will normally shift from 1st, 2nd, 3rd, and 4th if I accelerate at a moderate speed and keep the rpm below 2,000. But if I accelerate too fast, and above 2,000rpm, it slips when attempting to shift into 3rd. I have to let off the gas and allow for it to grab. The OBDII tool displayed no codes. Could it still be the Gov Pressure sensors even though no codes were displayed. I hear maybe even the TPS could be the? culprit. But again, no code.
I own a 97 Grand Cherokee. My trans will normally shift from 1st, 2nd, 3rd, and 4th if I accelerate at a moderate speed and keep the rpm below 2,000. But if I accelerate too fast, and above 2,000rpm, it slips when attempting to shift into 3rd. I have to let off the gas and allow for it to grab. The OBDII tool displayed no codes. Could it still be the Gov Pressure sensors even though no codes were displayed. I hear maybe even the TPS could be the? culprit. But again, no code.
I own a 97 Grand Cherokee. My trans will normally shift from 1st, 2nd, 3rd, and 4th if I accelerate at a moderate speed and keep the rpm below 2,000. But if I accelerate too fast, and above 2,000rpm, it slips when attempting to shift into 3rd. I have to let off the gas and allow for it to grab. The OBDII tool displayed no codes. Could it still be the Gov Pressure sensors even though no codes were displayed. I hear maybe even the TPS could be the? culprit. But again, no code.
@BigJd64 I’m sorry my friend, but none of this adds up. What does a radiator have to do with the battery, alternator or shift solenoids. Try and post a detailed analysis here to your problem. The more detail the better and I’ll try to help you out ASAP. On the surface I can tell you this, If you have issues with the ECM then none of the rest will work. Even the alternator is controlled by the ECM. Example: If a ground to the ECM was left loose at the radiator, then that could be it.
I have a 2003 Pontiac Aztek, that I had a radiator put on last month, which was driving well before I took it to this shop here, when they finished messing up my vehicle I needed to purchase a Battery and a New alternator, I haven’t been able to drive it except 1 time because the battery won’t stay charged took it to autozone they said that I need a Transmission Shift solenoid. I priced the parts what would the labor be for that type of job?
i have a 2000 ford windstar with a defective transmission. it runs in reverse but not on drive, 1 or 2. what should i replace or fix?
2000 Toyota Camry 4Cyl…Shifts from the first gear to 3rd gear…Check engine light comes on..I took it to AutoZone. I got PO105, PO446, PO758. I hope you can help me.
my 93 Lexus SC400 shut off when I put it in Drive or Reverse, I’ve been told my torque converter may be locked up, and some shift solenoid diagnostics might be in order. I recently cleaned the IAC, Throttle body, air plenum, replaced water temp sensor as well. All this shooting for better MPG results
@Motorfordtoyota input / out put sensors (2)
@Motorfordtoyota OK, I’ll try to help you out as best as I can, but I need more information from you. Let me know year, make and model as well as engine size. Give me all this info and I’ll research and post here. Also be as descriptive as possible. Automotive diagnostic tech support is what we do all day long.
The answer to your question is that it depends on which tranny you posses in your vehicle. Fill me in with all these facts and I’ll help you out. Good luck.
@ADPTraining Im not sure, all I know is that it wont shift from 1st but will go into reverse, neutral, park, drive just fine. Im not sure abouth this cause it is my nieghbor’s van that has been sitting for a while. I believe that it is the shift soleniod, how hard is it to replace them, and how expensive? I was wondering, cause I was thinking maybe I could buy it, fix it, then sell it for its actuall value!
@Motorfordtoyota Is your tranny not shifting from 1st or is it stuck in 2nd. If stuck in 2nd then is most surely an electronic problem. Drive slowly with tranny in 1st then shift to 2nd or D and feel for a change. This means that you were on 2nd gear. It is seldom confused. In 1st you’d barely hit 20 MPH. Also, is your check engine light ON. If so, then what are your codes or DTC. Post back with more if needed. Good luck.
would this be why a 98 dodge grand carvan would not shift from first? And how much would it cost to replace?