wot issues

[GN1987]

Driving my 87 gn down the road nail it to go into passing gear car, just dies lift off gas takes off. boost seems to be ok. but dont understand full throttle no power? whatca think is going on? Turbo, trans etc

[Keller]

Uh...probably the same problem you posted at http://www.gnttype.org/forums/showthread.php?t=14714

There are three things any car needs to run right: fuel, air, and spark. Something among those is not getting properly into your engine.

- Check your fuel pressure. At idle, with the vacuum hose off. You may need to buy or borrow a proper gauge to do this yourself. Do you know how old the fuel pump is?
- Insure that there are NO air leaks in the leaks in the air plumbing, before the turbo, after the turbo, in the intercooler, in any hoses, etc.
- Make sure the MAF readings at idle are correct. Some MAFs (particularly rebuild and aftermarket) do not read correctly.
- Make sure you are running the correct plus, not platinum plugs, and have the right gap.
- Make sure you have a good coil and module. Preferably GM or one from a trusted source like nos4gn.com.

You are working with a car that is 25 years old. And you are likely not the first owner. This site has had people talking about these cars since 1992. Chances are very good that someone has had the same problem and discussed it here. If you are not equipped or comfortable diagnosing the problem, we'll help you find someone who is. It is challenging to diagnose a car at a distance; impossible with little or no information.

[GN1987]

Uh...probably the same problem you posted at http://www.gnttype.org/forums/showthread.php?t=14714

There are three things any car needs to run right: fuel, air, and spark. Something among those is not getting properly into your engine.

- Check your fuel pressure. At idle, with the vacuum hose off. You may need to buy or borrow a proper gauge to do this yourself. Do you know how old the fuel pump is?
- Insure that there are NO air leaks in the leaks in the air plumbing, before the turbo, after the turbo, in the intercooler, in any hoses, etc.
- Make sure the MAF readings at idle are correct. Some MAFs (particularly rebuild and aftermarket) do not read correctly.
- Make sure you are running the correct plus, not platinum plugs, and have the right gap.
- Make sure you have a good coil and module. Preferably GM or one from a trusted source like nos4gn.com.

You are working with a car that is 25 years old. And you are likely not the first owner. This site has had people talking about these cars since 1992. Chances are very good that someone has had the same problem and discussed it here. If you are not equipped or comfortable diagnosing the problem, we'll help you find someone who is. It is challenging to diagnose a car at a distance; impossible with little or no information.

thanks Scott, MAF sensor fixed problem.. put pedal down and it goes.. thanks for the help,,,, this is by far the best forum for the turbo cars!!!