Nissan 1993 240SX stuck in 1st or 3rd - digital display bad

Tiny
LUNY23
  • MEMBER
  • 1993 NISSAN 240SX
Mileage: 140000 automatic; intermittent problem of shifting. Starts out in 1st gear won't shift to 2nd. Sometimes will "jump" into 2nd, sometimes have to stop, restart. Which sometimes works. This happens about 60% of the time. Also, at a stop light, after it has been shifting fine, it gets stuck in 3rd in starting out and won't shift to 4th. I usually pull the car off the road, turn off, restart which is effective 75% of the time.

The digital display mostly doesn't work, but does come on about 5% of the time. The radio and dashboard lights & tachometer (of course) don't work, , but oil, gas, door open chimes do work. Oh, the radio light came on the other night for 5 seconds. If the digital display (+ heads-up display) does come on, it will stay on till car turned off. Start back up - display is gone.

Automatic transmission, computer, computer sensor - all fine. Replaced sensor, all injectors, spark plugs & wires & more not related. No one (Nissan dealership, transmission shop, electrical shop, import repair shops) can fix this.

Heat / Cold -- not a factor. Please help - I'm at a loss !
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Monday, February 19th, 2007 AT 11:59 AM

4 Replies

Tiny
KIN CHAN
  • MEMBER
Call me.I need more info. We workon 70 %. No sweat.I can nail this
kin chan
relable auto
281 373 1774
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Monday, February 19th, 2007 AT 10:42 PM
Tiny
LUNY23
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Will do. Tues 2/20/07
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Tuesday, February 20th, 2007 AT 9:20 AM
Tiny
LUNY23
  • MEMBER
Thanks, Kin, for the telephone call and lots of information about my 240SX having difficulties getting out of 1st or 3rd gears. It's an auto transmission with maybe 140000 miles. The digital speedometer & digital heads-up display also work intermittently. Taking your info, I found out the following:

Monitor the Vehicle Speed Senor (VSS) signal at the Transmission Control Module (TCM), may be dropping at times, without the problem occuring. Potential cause of problem: VSS signal.

Only a few 240's with this problem. It was unclear whether a code was set for the VSS signal or not. In that case a poor connection was found but unsure where. The VSS signal is sent to the TCM from the speedometer.

I've talked with one certified auto electrician who passed on it - he's the electric Guru of our area (!); Found anouther certified guy who will take a shot at it without charging an arm and a leg for more diagnostics. Will keep a post on this, in case other Nissan owners have this same complaint. Thanks again, Kin, you were just so generous with your knowledge. A great guy! :D
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Thursday, February 22nd, 2007 AT 11:14 AM
Tiny
NISMOPINOY7O2
  • MEMBER
Has anyone come to a solution on this? I have the same issue and I have already changed my VSS. Still same problem. Any other ideas on what to check?
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Tuesday, October 19th, 2010 AT 7:38 PM

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