gdaddy

I have a stock 93 with a dp. Car's been running strong and smooth. Today, I noticed a sudden loss of power while accelerating. The boost gauge shows quickly rising to 10 psi then imediately dropping to 0 psi with noticable loss of power. Each time I boost I get same results. Other than that car acts normal. Idles ok. No noticable weird sounds. Thanks for any help.

djseven

iTrader: (56)

WHen does it drop to zero? Even if you lose the secondary it should still hold around 5lbs.

gdaddy

I don't believe I ever get to secondary because boost drops as soon as 10 psi is reached. I believe primary must be boosting to enable secondary boost.

djseven

iTrader: (56)

I mean at what rpm does all this happen

gdaddy

Between 3k and 4k

djseven

iTrader: (56)

Does it boost to 10lbs then just immediately drop to zero or does it fade to zero throughout the rpms?

gdaddy

OK I just went out for a test drive and paid more attention. I do have about 5 psi after 4500 rpm. So I get 10, drops imediately to 0, then at 4500 it goes to 5 psi.

djseven

iTrader: (56)

Now one of the experts will step in and help you resolve this. I was just trying to help you get the info they need to solve this problem.

Goodluck

gdaddy

Thanks for dragging it out of me!!

jaj1

In what gear are you doing your tests in?
If you are doing your tests in 1st or 2nd try a test in 3rd gear
starting wot at about 30 mph. Also, check out this site for symptoms and troubleshooting help.

http://www.autosportracetech.com/RX-...leshooting.htm

gdaddy

I was testing in third gear. I will have to spend some time in the troubleshooting site you supplied.

gdaddy

I may have discovered the problem. It appears the primary turbo input hose has collapsed. Maybe tonight I can repair.

nopiston_racer

iTrader: (2)

hey if u solved ur problem plz post b/c im also haveing the exact same problem.....thought maybe my 2nd turbo had gone bad but maybe u have a blessing that its just a leak in one of the tubes...thanks...parker

gdaddy

It is the primary turbo inlet pipe. It was collaspsed to at least 1/2 of the normal area. I reformed the pipe and took it out for a test. At first all was ok. Then it started again. The hose had collasped again. I either have a weak hose or there is a restriction in the airfilter. I have a K&N. I just cleaned it. I'll reinstall it later and see if that corrects the problem