Go Back   Infamous Nissan - Hardbody / Frontier Forums > Model Specific > Hardbody Forum (D21)

Reply
 
Thread Tools Display Modes
Old 05-30-2020, 12:30 PM   #1
macanic
 
macanic's Avatar
 
Join Date: Feb 2012
Location: Lower Alabama
Posts: 5
Vehicle: 1997 Nissan Pickup and 1984 Nissan 300 ZX
Thanks: 0
Thanked 1 Time in 1 Post
Default Intermittent miss

Truck idles fine, new plugs, wires, distributor assy, fuel filter, fuel pump, tank cleaned.

The problem is driving down the road will develop a slight loss of power and what feels like a miss. Crowd it a bit and you can feel it, keep accelerator down a bit and it will straighten up and run fine. Barely noticeable at times, but sometimes worse than others. Retired mechanic and this one has me stumped. Process been going on now for a couple of years but seems to be getting worse and more frequent.

Any ideas.
macanic is offline   Reply With Quote
Old 05-31-2020, 12:49 AM   #2
jp2code
Software Developer
 
jp2code's Avatar
 
Join Date: Dec 2011
Location: Longview, TX [USA]
Age: 50
Posts: 9,766
Vehicle: 94 LB 2x4 Manual VG33e
Thanks: 1,555
Thanked 1,316 Times in 1,159 Posts
Default

Is the Ignition Timing set right?

And have you tried pulling the codes? There is a How To video in my signature below.
__________________
Joe (not a mechanic!) Don't have an account? EMAIL ME
Factory Service Manuals: https://www.nicoclub.com/FSM/Hardbody/
Walk-through: Checking Nissan Trouble Codes
1994 VG30E to VG33E with H256 Cams

jp2code is offline   Reply With Quote
Old 05-31-2020, 01:32 AM   #3
XoXSciFiGuy
 
XoXSciFiGuy's Avatar
 
Join Date: May 2017
Location: Auburn, WA
Posts: 2,546
Vehicle: 1997 D21 King Cab XE 2WD, 1998 Pathfinder.
Thanks: 160
Thanked 442 Times in 405 Posts
Default

It's a 97...just plug in the code reader.
__________________

1997 King Cab XE, 5-sp, canopy, AC/PS, KA24E, 120,000 miles. Need a technical manual? Drop me a message. Chilton's for amateurs.
XoXSciFiGuy is offline   Reply With Quote
Old 05-31-2020, 01:56 AM   #4
jp2code
Software Developer
 
jp2code's Avatar
 
Join Date: Dec 2011
Location: Longview, TX [USA]
Age: 50
Posts: 9,766
Vehicle: 94 LB 2x4 Manual VG33e
Thanks: 1,555
Thanked 1,316 Times in 1,159 Posts
Default

Quote:
Originally Posted by XoXSciFiGuy View Post
It's a 97...just plug in the code reader.
97. Good idea. Still, check the timing first. My How To makes a point of showing that before reading the codes.
__________________
Joe (not a mechanic!) Don't have an account? EMAIL ME
Factory Service Manuals: https://www.nicoclub.com/FSM/Hardbody/
Walk-through: Checking Nissan Trouble Codes
1994 VG30E to VG33E with H256 Cams

jp2code is offline   Reply With Quote
Old 06-03-2020, 02:37 AM   #5
cadillacdude1975
The Gear Jammer
 
cadillacdude1975's Avatar
 
Join Date: Apr 2013
Location: Chattanooga, TN
Age: 48
Posts: 9,846
Vehicle: 87 D21 SE KC V6 2wd 5sp & 87 Pathfinder 4x4 SE
Thanks: 388
Thanked 1,180 Times in 1,086 Posts
Default

A bad injector will make it run bad.
cadillacdude1975 is offline   Reply With Quote
Old 06-03-2020, 02:50 AM   #6
LugNut1990
 
LugNut1990's Avatar
 
Join Date: Jul 2015
Location: N.E. Kansas
Posts: 538
Vehicle: 1990 Nissan Hardbody
Thanks: 0
Thanked 62 Times in 55 Posts
Default

On mine it was a dying injector. But could be one of many things, like a sticky EGR?
__________________
Original owner
1990 Nissan Hardbody, Aztec Red
Standard cab, 4x4, KA24E, 5-speed
Intentionally near-stock
Mods: Second OEM horn, stereo/speakers/sub,
mud and snow tires, HD trailer hitch (cat 3+),
liquid bed liner, G1W dashcam
Definitely not for sale!
LugNut1990 is offline   Reply With Quote
Old 06-03-2020, 05:32 PM   #7
street_rulerr
 
Join Date: Nov 2015
Location: West Coast
Posts: 2,135
Vehicle: 1996 4x4 5spd
Thanks: 0
Thanked 188 Times in 178 Posts
Default

none of that sounds right. codes or timing.

sounds like something is rattling around or has a poor connection thats momentarily breaking and reconnecting. Id hunt grounds and jiggle the major connectors like the MAF. outside chance of rodent damage to the harness causing a short.

does it happen more at specific RPM range or just every time you do that action to induce it? im wondering if its opening the swirl valve in the manifold and the car suddenly runs incredibly lean for a few cycles, o2 sensor reads it then corrects it. maybe try using bailingwire to keep the valves open and go for a spin?
street_rulerr is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 03:45 PM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.