esty

i everyone...my 1st post...recently i inherited an 86 d21 pickup...all in all it's a nice older truck..it's never been wrecked, starts good, etc...

one problem i can't figure out is, at any speed a rapid accelerations kills the truck like the key was turned off...take your foot off the gas and it starts back up...you can ease the truck up to top end and it'll run there all day but if you step on the gas it stalls until you let off the gas and ease it up to speed...

i changed the fuel filter....it seems to be pumping plenty of gas...any suggestions or help would be greatly appreciated

slammed87d21

Check your TPS(throttle position sensor) by unplugging it. If the truck keeps running, theres your problem.

__________________

1987 Nissan Hardbody Custom Convertible
1985 Yamaha FJ1100 Streetfighter
1988 Chevrolet C1500 Silverado
1991 Honda Civic Hatchback (Daily driver)
1979 Ford F100 (Met its maker at the crusher)
1982 Datsun 280ZX project car (R.I.P.)
1987 Nissan Hardbody XE 300ZX V6 swap (R.I.P.)
1985 Nissan 720 ST (R.I.P.)
1983 Nissan 720 (R.I.P.)
1983 Datsun 280ZX (R.I.P.)

esty

thanks....i did that...the truck will not run when the TPS is disconnected

slammed87d21

Ok....well, click on this http://www.nissanforums.com/hb-truck...ror-codes.html
Check and see what code or codes the ECU is throwing.

__________________

1987 Nissan Hardbody Custom Convertible
1985 Yamaha FJ1100 Streetfighter
1988 Chevrolet C1500 Silverado
1991 Honda Civic Hatchback (Daily driver)
1979 Ford F100 (Met its maker at the crusher)
1982 Datsun 280ZX project car (R.I.P.)
1987 Nissan Hardbody XE 300ZX V6 swap (R.I.P.)
1985 Nissan 720 ST (R.I.P.)
1983 Nissan 720 (R.I.P.)
1983 Datsun 280ZX (R.I.P.)

rockdr

The codes didn't come into being until the next year. The Throttle position sensor could still be a problem given the age. Injectors might not be getting the info they need. If you flutter the footfeed, can you fool it into accelerating a little faster? When I had one injector go out, I kept working the accelerator for a hundred miles to fool it into thinking that I was flooring it about twice a second so the computer apparently called for a little extra gas and the working injector kept it going. My mechanic was amazed.