need help 87 GN stutters when giving it gas!!!!???????

[pedro]

Not sure what could be making it startter I changed injectors to 38lbs with matching TT chip
And its doing the same thing. I cheched sparkplugs and seemed to b good. It was running good
With 60lbs injectors with tt chip, 3 1/2 maf , translater , hooker headers,
3" dn pipe. And I'm thinking its got the stock turbo.
Okay with that being said . I hope I can get some feed back. Thanks guys

 

[phil_jordan]

Im lost at what you are saying. You took out the 60's and swapped them for 38lbers??? And now it's running bad?

 

[pedro]

No I had the 60s on when it started to act up. Than I switch it up to 38s , Cruz I
Thought that it might b the injectorinjectors. But still doing the same thing.
I just changed the fuel filter last night and I seen some metal shevings that come out of the filter.
I'm going to buy a new fuel pump, I'm thinking that it might be it.

 

[Frank87gn]

Most probably it might be your fuel pump. Do you have a fuel pressure gauge. It might help.

 

[dank GN]

whats your MAF reading i have had the same issue and my translator was on the outs

 

[whitehot1]

How old is the coil pack and ignition module? i would have them tested at an auto parts store. You cold test the coil pack if you have a digital multimeter.

 

[pedro]

te="Frank87gn, post: 3222367, member: 12253"]Most probably it might be your fuel pump. Do you have a fuel pressure gauge. It might help.[/quote]
No i had a shop set the fuel pressure. Not sure what pressure it was set to.
But it was running good for like 4 months.

 

[pedro]

whats your MAF reading i have had the same issue and my translator was on the outs

I'll change my MAF to lt1 . And see if helps. Or put every thing back to stock
And start all over. Thanks man

 

[pedro]

What's the right fuel pressure with 38lbs w/o vacume.

 

[DavidM]

TT recommends setting Fuel Pressure at 43lbs Vacuum line off and then tune from there.


Posted from the TurboBuick.Com mobile app

 

[Boostdeznuts]

Check your tps number

 

[pedro]

TT recommends setting Fuel Pressure at 43lbs Vacuum line off and then tune from there.


Posted from the TurboBuick.Com mobile app

Okay thanks man. I'll check it out after work

 

[DavidM]

Pedro,

Post Scanmaster numbers here at Idle fully warm so we can see what looks off.


Posted from the TurboBuick.Com mobile app

 

[pedro]

Hey guys . I don't have a scanmaster but I checked the tps and I got .34 with just ignition on @ idle
And 1.91/98 at wot. So I went and bought a new tps from car quest, I got it installed it but it was doing
The same thing I checked voltage and @ wot is 2.03 volt. So I guessing the new one is defected price.
I checked voltage coming in to the tps and I have 5.4 volts...

I installed new 320lbh fuel pump, new fuel filter new sparkplugs new wires,
Oil changed. So not sure what could b d problem!!!!!!!!!"

 

[Boostdeznuts]

Your TPS # is too low

 

[Bruce Urie]

I stutter a lot when I get gas.......oh! You mean, the CAR? Oh, sorry, I got off on the wrong side of the bed this morning....sorry for the misinformation......

Bruce '87 Grand National

 

[pedro]

I'm going to order another one tomorrow after work. I hope that's what
Making it run rough

 

[TurboBuRick]

Start the car and unplug the cam sensor. Go for a ride and see if it still stutters.

RL

 

[DavidM]

Pedro are you adjusting your TPS? You need to adjust it not buy a new one.


Posted from the TurboBuick.Com mobile app

 

[pedro]

[quoteI "DavidM, post: 3223933, member: 31066"]Pedro are you adjusting your TPS? You need to adjust it not buy a new one.


Posted from the TurboBuick.Com mobile app[/quote]

Yeah i tryed but it won't put out the voltage. I'm only getting 1.91 when It should be 4.5 4.8 volt right?