Question about 1990 Nissan Hardbody King Cab

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Backfires and loose power when hot

1998 Nissan Hardbody fitted with VG30 engine.
Vehicle runs well when cold as soon as it gets hot,it starts to backfire and it looses power and fails to rev-up.

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6 Suggested Answers

rparad1
  • 1 Answer

SOURCE: 88 Nissan z24i backfires through throttle body and loses power when in gear

Check your intake and exhaust modules. I have a 1987 D21 and had the same problem (if I understand your post). I replaced the modules located behind the driver side headlights and it fixed the problem. Good luck! I hope this helps.

Posted on Nov 14, 2008

  • 11 Answers

SOURCE: 1984 nissan 300zx running erratic

Is the MIL light on on the dash?

Posted on Nov 22, 2008

volvo2103
  • 122 Answers

SOURCE: replacing a nissan altima sunroof

it should....same body style....

Posted on Feb 03, 2009

  • 383 Answers

SOURCE: 1990 nissan hardbody only shifts into 4th and rev

Injt: From your description, it sounds serious. If you are describing a Nissan 5 speed transmission, here would be my best guess as to what has occurred. Prior to near total self destruction, these symptoms will show up when counter gear bearings have failed.
At first the transmission will just seem a little noisy, but you probably might not notice that the noise is not present in 4th.
As the bearings deteriorates, the countergear will slowly start dropping and the gears will no longer be running properly aligned.
The noise at that point would be quite obvious. You would hear it in all gears but 4th. With the car at a standstill in neutral with it running and the clutch pedal released to where the transmission is turning, it would sound like a bucket of rocks loose, rattling in the tunnel area of the car. When you depress the clutch in, the noise would disappear. The reason you could run it in 4th is because it is the only gear in which the input shaft and output shaft are locked solid with no relationship to the counter gear. The truck/car can be driven in 4th for this reason. (It doesn't need the counter gear)
Reverse gear is a large gear located at the very center of the transmission next to the Steel center section which you would see sandwiched between the front casing and the tail housing. It is not much more than 1"" thick. Because Reverse is right at that location, even though it does need the counter gear to transfer power, it is the only gear in the transmission which is "SPUR" cut and not helical cut. This design gives it a distinct advantage to operate in a misaligned state with greater spacing. It will still make quite a racket in reverse, but it will move. I am 99% sure that this is your problem. Should this be the case, the transmission has been run far too long to consider repairing. It would probably be scrap metal inside. Find a used one or get a re manufactured one.
I have found that the synthetic gear oils have worked well in our Nissan 300Z race cars we use for road racing. They have basically the same transmission. I am partial to Amsoil and Redline. Both have performed beyond expectations on the track.
I hope I have answered you question.

Posted on Mar 26, 2009

lilmikew99
  • 105 Answers

SOURCE: CHANGING THE FUEL PUMP ON A 1986.5 NISSAN HARDBODY EXT CAB 4X4

lol good ? look at your tank staps compared too the bed bolts might be cheaper getting new bolts rather then fuel straps, the pumps from a 2 or 4 wheel might not make a difference *** lond as same engine.

Posted on May 10, 2009

Testimonial: "Went with the bolts holding the bed (6)of them. It was actually pretty easy, sprayed the bolts with some WD40 the day before we did the job. Thanks!"

  • 67 Answers

SOURCE: 2001 nissan sentra xe p1320, p1140 codes car

Distributer Signal Output is code p1320........Intake Valve Timing Control Position Sensor Bank1 is code p1140...

Posted on Feb 12, 2010

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lol good ? look at your tank staps compared too the bed bolts might be cheaper getting new bolts rather then fuel straps, the pumps from a 2 or 4 wheel might not make a difference *** lond as same engine.

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