after trying to trace my problem with no avail I decided to let a shop take a look at it they had it for about 4 days after which they called and said couldent figure it out either so I got a refund and now its in another shop of which says they have a person that specializes in older turboed cars so keep your fingers crossed. just wanted to let yall know

What's the problem?
Mario
1976 280Z - Dad's Z (turbo swap?)
1978 280Z - Stock Rebuild | 5 Speed | Twice Pipes | Gutted
1982 280ZX - Turbo | MSnS-E | 5 Speed | Large NPR IC
BROKE: Will build computers, webpages, networks, MS units, troubleshoot computers for money

Yeah, how about some insight here. With the Zologists on this site we can figure it out.
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77 280Z - TEC3 Engine Management, Coil Packs, 3.1 Stroker, 550CC injectors, tripple throttle body FI intake, MSA Stage II Cam, etc...etc...
79 Fairlady - Rusty
81 280ZX - DD

At least the 1st shop didn't charge for not fixing it. Hope you fare as well with the 2nd. What's wrong? Specializing in old turbos may not be much of a specialist. Everything is in the archives but post the prob anyway.
Anyone can drive a new car.

its been bogging down and backfiring through the intake, ive replaced all the plugs and wires, replaced the distributor, the cap and the rotor replaced the injectors and the FPR and the fuel pump is fairly new oh yea its an 82 280zxt

TPS switch..................

Agreed, TPS
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77 280Z - TEC3 Engine Management, Coil Packs, 3.1 Stroker, 550CC injectors, tripple throttle body FI intake, MSA Stage II Cam, etc...etc...
79 Fairlady - Rusty
81 280ZX - DD

Check the cold start as well.. Might want to check the AFM connections and make sure it is working. Reseat and clean the plugs to the ECU.
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1977 280ZTurbo /intercooled
13.02@105
South east Z shoot out 7 Link

Get a FSM & go through the trouble shooting process. That's the most direct way to fix these cars when you don't know what you're doing &/or what the problem is. Shotgun & throwing parts only leads to money spent. Unfortunately, the hired "specialist" may continue along these along these lines & expect pay for his misdiagnosis & thrown parts. You'll have to pay for his parts as well.
Anyone can drive a new car.

I vote for WigenOut-S30's suggestion, clean and reseat ECU plugs......fixes my ZXT up every time....unfortunately the fix only lasts a few days...
Phil
1981 280zxt
5-speed conversion,3.9 R200,Eibach springs,Tokico struts,Energy Suspension,K&N CAI,AutoMeter A/F, Boost, Fuel Gauges,Cusco Strut Bar,Greddy B Spec II boost control,Jeffp 3in mandrel exhaust,Magnaflow,Spearco Cooler, HKS BOV, 10 psi

Junkman is right! Get a shop manual. It tells exactly how to set the TPS switch. That switch is a nasty little bugger and you need a meter of sorts too! Hope this helps! We don't want to see you throwing good money after bad. I had the same problem once, called a guy and asked about troubleshooting the Turbo.... he was all too happy to take my money and rebuild my turbo even though there was nothing wrong with it! Luckily, I went and bought FSM and found the problem stat! Oh, and I had a bad O2 sensor.... that will mess up your engine/turbo performance big time too!
giZmo

The tps/tvs on a turbo only has an on/off postion. On at idle, off when the rpms reach 900.
--Denver 6-29-1999 1st post.
82 280zxt 4 spd auto
73 240z--lsd, cv axles
ferget donations, I'm into blackmail.
spindle pin puller for sale.
I can't believe some people spend $15 on shifter bushings in the B trans

Ya, but it needs to be set for on/off at the right RPM. Plus, the switch could be bad (shorted) and/or wet.
Post Edited (Apr 3, 2:18pm)

Also the coolant sensors, as well as a sticking or defective AFM, or even if its worn out or something.
If it's an auto, check the kick down/wot switch on the top of the accel pedal. If that isn't activited under WOT, the ECU will not go into "power" mode.
Check for bad, mismatched, or clogged injectors, fuel system, pump, etc.
List can go on and on, but all these checks are simple and can be done easily by yourself.
Mario
1976 280Z - Dad's Z (turbo swap?)
1978 280Z - Stock Rebuild | 5 Speed | Twice Pipes | Gutted
1982 280ZX - Turbo | MSnS-E | 5 Speed | Large NPR IC
BROKE: Will build computers, webpages, networks, MS units, troubleshoot computers for money

sounds like the ecu.
Z's are like woman maintenance,maintenance,maintenance!
1971 240Z gunmetal metalic 5sp 4:11 gears in the rear
illuminas and purchased from the original owner w/136k original miles

Let's just rebuild his engine. What fun!!! Might as well do the suspension while we're in there. How about a repaint as well? I know, Megasquirt & a bigger turbo Parts, Parts, Parts!!! We don't need no stinkin manual! YEEE HAAAA!!!!!
Anyone can drive a new car.

^
seriously. I dont let NO ONE touch my baby.
78 Turbo Black Pearl
(9.0cr,4 piston calipers, p90a, etc.)

Junkman
LOL thanks! I was sad over some bills...
Have you shared the left lane today?

thanks guys for all the info ill get back to yall on what the outcome is