Turbo swap questions, CAN'T FIND ANSWERS

[1gchallenge]

Did the swap, followed the forum on it, its not running right. Only things I haven't done are putting the down pipe on, hooking up knock sensor, and still have na fuel pump but I'm not building boost yet just making it idle and rev. Every cylinder is firing and fuel is they're, I tested by taking off spark plug wire and seeing if it ran different. Also gas is a lil old but don't really smell varnished. And fuel dumps out of fuel pump so I know it works fine as well

What's wrong:
Rough idle
Won't rev past 3500 and the tach goes crazy when it gets there
just runs rough

It does start easy though, in just a couple cranks. And about the knock sensor, it don't start reading til like 2200 rpm any way so it should idle fine with out it, I deleted it from my 91 gsx and it tran fine.

does anyone have any idea?! Im so lost right now. O yea, it was holding a idle at about 2000 and sounded real good like nothing was wrong at all.

Please help a fellow dsmer out!

 

[92EagleAWD]

Can you post a link to the thread/s you used to complete the swap? Might help everyone understand the exact process you used.

 

[1gchallenge]

I don't know how to haha but its on here, installing a turbo 4g63 into a nt 4g63, I believe is the title tho

 

[92AWDHX40]

Did you do a complete swap miss anything, do a boost leak. Terry's Talon Troubleshooting Tips #3 - Fast Idle (aka. Idle Surge)

 

[1gchallenge]

the idle doesn't surge and does idle the right rpm most the time that high idle was just a short deal. and I stated what I haven't done in the first post. I need someone who knows these cars better than enough to ask if I missed anything, that's too obvious. I would of already tried that.

Is there anyone who has had these problems and knows how to fix or test things? so far on this sure it seems like no one knows how to fix anything, people just say search for it our give crap answers, almost like every one owns a honda or something. What's the point in being a member if no one even tries to help solve problems.

 

[miguelmcv]

If Idle is OK, But won't pas 3500 Then.
Your TPS is off.
Check your TPS,,,,, Its not Working property Or is not at the wright position.

 

[92AWDHX40]

ok it may not surge but its not a exact answer but some ideas as how to fix your idle problem. Idle is a issue i have had too, lots of things solved it not just one problem i learned. what thread did you follow to do your swap?

 

[1gchallenge]

ok it may not surge but its not a exact answer but some ideas as how to fix your idle problem. Idle is a issue i have had too, lots of things solved it not just one problem i learned. what thread did you follow to do your swap?

I played with idle some and timing, actually got it ti idle ok. Still won't rev, I test drove it any way just because. it surges when I drive it and cuts out a lot when I get on it the tach goes crazy tho and don't show rpm.

And about the tps, I haven't even tried re adjusting that, good to know it does that tho. Thanks

And I drained the fuel and added some new so that should be ok. This car has always been a pain, its probably the most confusing car I've ever worked on. I've built these cars and always work on them. This is te only one I can't get to run right!

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Heres a couple pictures to prove there really is an engine. Of course i dont have the headers on in the car because i'm just using the stock turbo.

 

[1gchallenge]

does anyone have any ideas? Or was this a pointless thread?

 

[92AWDHX40]

do all the things in the thread, also do you have a tuning device to help. That would help you a lot.

 

[brian9397gsx]

Lets see a picture of it in the car how it sits. Almost sounds like maf not plugged in.
What ecu do you have ? what injectors do you have ? do you even know?
But who knows right? Lets just keep guessing. Nice attitude, should get you far.

 

[e85_4g63]

tach issue sounds like a 91 ecu with a 90 wiring harness (Saw your car was a 90). What ecu, injectors, and MAF sensor are in your car?

Also, with the connector grounded timing should be 5 degree's. Since you seem to know alot about these cars, I'm sure you know what I'm talking about.

I've swapped plenty of N/T 1g's to turbo. I don't have problems like your having, you def missed something, or more then likely, didn't check things before just starting the car up. Is the CAS "in time" (they do go a certain way). Is your throttle closed switch present and working? Is your base timing correct? Are you running the correct plugs and gap's? Does the car have a known good working ECU, MAF, and injectors in it? You don't just put in a turbo motor and enjoy the new found power... for long!

 

[RogueTalonTSI]

Better yet, do you have a data logger? Crazy tach may be a bad ptu... have you checked the ecu for leaking caps?

 

[1gchallenge]

Sorry for taking so long to post, I've been moving. And sorry for the attitude, but I'm not completely stupid with these cars, but no I don't know every thing. That's y I posted here for advice with people with more knowledge than me. And I have checked every thing, I timed it, think I got the tps set right...all the directions I read on that say something a little different. And the car didn't run right before the swap. I thought it was bent valves, so I decided to do the swap. And I have 90 wiring harness, 91 ecu that looks good and I used rre inductions to check, 450 injectors with injector resistor wired in, no data logger ### I just want it stock, nothing special. And again sorry for being rude, this car is just driving me crazy.

I did find a boost leak, now it starts cold, runs rough until half way warmed up, runs almost protect for a few seconds then runs worse and don't like restarting till cooled down.