rough

So like the title says, my TBI is making me say WOa!

Car was running pretty good. Slapped on my modded TBI united that i had dremeled down, shined up to looking brand new, put back on the 1/2 inch gasket spacer between manifold, put 2 in stead of one gaskets on the pod.

Low and behold the lever unit that my TV cable, Throttle cable ect hooked onto was different "i got the tbi unit from the yard with a intake manifold"

So I take my original and mod it to so




Think I did a kick *** job on it, even did the risky shafts to, looks like it was made this way.


Anyways, I have like a major loss in power, only difference is the mods I did and the second gasket to the injector pod base.

When i slam it, rpms jump you, it sounds like its going but they just hang and hang there and slowly go up, and when it shifts it hits alot harder now,

It has drasticaly increased my 0-60 time


Could this be my TV cable unadjusted ? Could the spacer in the pod be causing this? Could I be getting to much air now and not enough fuel ?


Any thoughts appriciated. Its raining outside so im bored and looking to find some enlightenment for when it stops!

Ty

graebz28

iTrader: (5)

Start spraying some starting fluid all over to check for vacuum leaks first. Are you using a different FPR? Check fuel pressure.

Don't drive it until you get kick down working correctly. I wasted a few trannies this way.

Looks good, but the new one is obviously from a truck or something other than f-body. You might have different injectors unless you are using the old ones.

How is it idling?

dctrumpet

iTrader: (10)

I'll be honest with you. Get rid of the spacer between the manifold and TBI. NOT one person can prove to me that there is any gain or benefit to using it.

Last fall i posted a thread showing the dyno results that several good friends did with their spacers. Causes more crap than what they're worth.

Some will argue with me, but those who do argue with me have yet to show pre and post dyno results.

Low end torque is slightly increased......

90c350

Vacume leaks maybe?? Have you checked to see if you are still getting WOT with the spacer installed?? Or with the modded tbi? Its possible that you are not getting full throttle do to the spacer or different tbi unit.

89rs454

Will not having the TV cable adjusted correctly screw your Tranny up?

90c350

Absolutley!!!!!!

327Chevy

Like they said, check the TV adjustment right away.

Also, with the engine turned off, have your wife/girlfriend floor it and then you look down into the TBI unit to make sure the throttles are opening all the way.

Also, how about a pic once you got the accelerator and the cruise connected? Just to make sure.

graebz28

iTrader: (5)

Edelbrock and others make adjustable throttle linkages. I used one when going to a vortec manifold. Actually, in the end I used the stock one modified with one piece off the adjustable for the cruise. But you got a auto which adds one more cable to the equation.

Ditto for checking for full throttle, remove the spacer. Also, need to get your IAC counts to 5-10 when at idle and fully warmed up. From my experience, this will mess with your fueling quite a bit. Do some searches on how to do this.

Hard to tell from photo, but looks like the idle set screw is out quite a bit.

89rs454

I Guess i do not have to Absolutely worry about it. I have a turbo 350.

graebz28

iTrader: (5)

The two trannies I trashed by not having the TV cable hooked up was a TH-350 on my old Monte.

89rs454

My turbo 350 does not have a TVcable

rough

Played with the TV cable today, did nothing but make my shifts way off, now I gotta tweak that lol.


I will pull the gaskets off the injector pod, the 1/4 inch gasket at the base of the TBI was the one I was using before,


Will post back after the injector gasket gets removed, I believe the butterfly's were opening all the way "was checking tv cable, and such"


Thanks for all your posts so far !


PS, Car runs fine, cept when you smash the pedel if feels like im pulling another car behind me lol

graebz28

iTrader: (5)

The only reason you would not have a TV is if you had a manual or reverse manual valve body. Otherwise the trans does not have a way to determine when to downshift or lock converter. Some trannies had a vacuum reference as well. Been a long time since I had an auto.

89rs454

Exactly the turbo 350 has a vacuum hose to determine gear shifts and downshifts.

rough

I had to put back on my space for the Open air element which was used for the stock filter causing my tv cable to bend at like 60* So shifts are good still no power

Gonna take off the injector spacer gasket, and check for vacuum leaks, and double check the TBI-manifold gasket for alignment.

After like 3 grand the engine seems to get quiet at WOT and sounds like it wants to pop :/


Will post up after I fiddle with it here in a hour or so.

rough

I took off the gasket tbi - manifold and put on a really thin one, nothing blocking fuel going down, took off the pod spacer as well, took it for a drive, still nothing, crap :/

rough

Now I got this High pitch noise coming from the front left, it kinda goes away with the gas being pushed but loudest at cruising or idle.


Where has all my horsepower gone


Anyone else have this problem ?

Im not popping any codes

Should I get a new TPS ?


This problem came from taking off my TBI which ive done tons of times, modding it and putting it back on.

rough

The high pitch noise was my Tbi-manfold gasket "i put a really thin one on it"
That problem solved

Still no power !!!!!!
doing a 180 u turn i can barley get the rear end to slide
Its got fine go under part throttle, feels great unless its smashed
It will down shift and sit at 4 grand not move the tach then shift gears



Anyone help !!!
I would love to make the camaro night at sac raceway but how my car is now, wont be attending unless I can get my power back

heavyduty

check your vacum lines running from the tbi to the charcoal canister behind the driverside headlight.

rough

did and there good I just checked for leaks so all vacuum leaks are good unless its to small for carb cleaner.

Man this is a PITA

Would a video in car at wot be some help ?

rough

SO i took the car out for a few hours, not so much fun. Made some videos and some sound clips only to get pissed at my phone for its crappy sound on my video but good video ? go figure

Now it takes forever to get to 60 and its starting to surge, im guessing fuel pump

89rs454

Make sure you have your injectors in the right way, there is only one way they will go in and work. I can remember when i had a 305 i had my injectors in wrong and drove it down the road all it did was surge and act like it had no power. By looking at the first pick you posted it looks like the injectors are leaking in the front? Correct me if im wrong.

rough

Naw no injector problems, Ive rebuilt a few of these units already, your right about the injectors only going in one way, got that lil slit that that lil circle **** at the bottom fits in, while trying to twist it in so the O ring dont mess up

The POD was rebuilt a while ago, no problems with it.
I took it off for the grind down of the TBI
then put it back on

THats not liquid you see, its a test area on the pod where i was sanding. Wanted to see if it would polish up, maybe allow more air to allow by



By this point im pretty sure its my fuel pump gonna try and get my video and sound clip up.

dctrumpet

iTrader: (10)

Helpful tip when installing TBI injectors:

1. Lube the lower injector o-ring well with a WD40 and place the o-ring in the bottom of the injector pod using a blunt/round object. Make sure it seats well in it's final position.

2. Place the metal washer in it's seat in the top of the pod opening.

3. Lube the upper injector o-ring well with WD40 and seat it on top of metal washer. (note: many people leave out the washer. It is essential to keeping the upper injector o-ring in place and secure).

4. Place injector with injector "tab" lined up with the slot in bottom of pod and gently push the injector in place and watch for the bottom o-ring to make sure it's not being pinched.

5. Firmly, but gently push the injector down and you will hear a nice "pop" and the injector is now installed.

If the injector o-rings (upper and lower) are lubed well then the injector needs NO twisting or excessive force to install.

A nice crisp "snap" or "pop" should be heard. I have installed hundreds. So easy to do once i learned these tricks.

Hope this helps someone.

Sean

safemode

iTrader: (1)

maybe it's stupid to suggest, but when i retard the timing, i have the exact same symptoms you're describing. Maybe during the course of working with things you accidentally wiggled the distributor a bit and retarded your timing.

rough

When my dizzy was 180 backwards I had more power posting video and sound here in a sec had to convert from cell phone format blah!

rough

Ok here are some videos, turn your sound down as my phone does crappy sound on the video but good sound on sound record hmmm


http://kizap.com/1.avi.AVI
http://kizap.com/2.avi.AVI
http://kizap.com/3.avi.AVI
http://kizap.com/4.avi.AVI
http://kizap.com/5.avi.AVI
http://kizap.com/6.avi.AVI
http://kizap.com/7.avi.AVI
http://kizap.com/8.avi.AVI
http://kizap.com/9.avi.AVI
http://kizap.com/10.avi.AVI
http://kizap.com/badcar.wma

rough

Please note all these videos and the sound clip are at full throttle. and from 30-50ish mph

0-20mph takes about 5-10 seconds to achieve now

rough

So I replaced the fuel pump, and to my avail no luck ! Still doing the same thing "insert mega cusswordage here"


Anyways, I think my cat is plugged, or toast or w/e .
I have my wife rev up the car and stick my hand behind the exhaust and really dont feel much, a lil warm.

It surges really bad when i can hear the exhaust it jerks foward when i cant of course its surges back, Think a 10 speed could out run me atm.

rough

Woa came across my old post, this ended up being a plugged cat! for anyone looking around!

one92rs

iTrader: (5)

so it runs great now right????

rough

It did for a while, drove it from cali to indiana.
Sitting here over the winter, it's got some bugs, and driving it 100mi daily for work takes it's toll.

She is taking me to Florida here in about a week, so it's like a mad dash to fix anything annoying or issue wise before the haul!

one92rs

iTrader: (5)

please let us know what you find in the bugs. it is great info for everyone.

rough

First bug ive found is this spring, I cant spin the tires going strait from just stepping on it!! This is not right !!

Gave it a nice tuneup, wires, plugs, cap, oils, fluids, seafoam and it runs a nice smooth idle.

Go for a drive, missing a lot of power or I should say making noise but not going as fast, feels like the motor is tightening up, and it smells of gas.

Gonna replace the injectors with new, and not rebuild them. They look good, but looks can be deceiving.

Will be taking a trip down to Florida here in a week see what else I can find wrong with a 1000+ mile cruise.