No full power

[efnfast]

So I've never really noticed a huge differance between normal power and full power. Seems 125 hp should be pretty seat of the pants. So tonight in 4th gear with power key off. 60-90mph in 7 seconds. Power key on, dash light on. 60-90 mph in 7 seconds. Have I not had full power since I bought this car last summer????? Second gear chirpies is about the best it will do.

[tccrab]

Originally Posted by efnfast

So I've never really noticed a huge differance between normal power and full power. Seems 125 hp should be pretty seat of the pants. So tonight in 4th gear with power key off. 60-90mph in 7 seconds. Power key on, dash light on. 60-90 mph in 7 seconds. Have I not had full power since I bought this car last summer????? Second gear chirpies is about the best it will do.

The difference should be night and day.
Depending on your tires and road conditions you should be able to do WAY more than 2nd gear chirpies.

Power Key "On"
Going into 2nd gear at WOT should cause serious clouds of no expense spared super premium Z rated tire smoke.
Hammering the throttle at about 30mph in second gear causes tire smoke with no clutch needed.
Car pulls HARD from 3000 all the way to 7500rpm (and beyond).

Power Key "Off"
Feels like something the wife could drive to the shopping mall in the rain.
Initial acceleration feels good but runs out of wind quickly around 5000rpm.


'Crabs

[efnfast]

Definatley no tire smoke in second gear. Ever. The good news is, the vette I love I think I'll love more once I get this straightned out. Any suggestions?

[tccrab]

Check to see if any ECM codes are stored.
Does your SES light come on and go off when you start the car?

'Crabs

[efnfast]

SES comes on before I engage the starter, but does not come on when I start the car

[mike100]

my car won't spin the tires in 2nd, but if it stops pulling at 5000 rpm, then you are only running on primary injectors.

I don't know of any other way to check outside of the scan tool which shows the sec on/off status.

91-up cars have the green 'full power' led next to the power key. that should illuminate.

[efnfast]

MY 90, has a full power display on the info panel. It doesn't seem to stop pulling at 5k. If the scan tool shows seconderies on, does that mean they are working?. Still going to dyno the car tomorrow. Guess that will tell all.

[mike100]

Originally Posted by efnfast

MY 90, has a full power display on the info panel. It doesn't seem to stop pulling at 5k. If the scan tool shows seconderies on, does that mean they are working?. Still going to dyno the car tomorrow. Guess that will tell all.

if there is a big vacuum leak, the dedicated sensor on the secondary vac line should report a failure as a check engine light. should, never happened to me so I can't step-by-step you through it.

The tech1 tool does have a function to temporarily switch to 16 injector operation for a moment or two for diagnostics, but I do not think it opens the secondary throttle ports.

sounds like yours is working. the engine should run strong from 4000 to 6500..power peaking at about 6k...

[efnfast]

Well, like I say, tomorrow I'll dyno it. 250 hp without, 375 with. I'll be sure to post. Should show a little over 300 at the rears?

[1990 quasar blue]

Most put down either side of 330. Mine only made 320/320.