New Owner---1990 Black LPE 368 475hp zr-1 43k miles #699 ---

[vilant]

Sweet ride. Congrats on the pick-up. I see you caught the bling bug already.

[alwayscode390]

HAHAH yeah ... have to give it a few "personal touches" so she feels comfortable to me . Thanks ---

[alwayscode390]

Just got the x-pipe installed today ... sounds AWESOME compared to the rattling sound it was making HAHAH.

Waiting on custom hubcentric spacers to be made for the Fikses ... will be another week until they are installed.

Are the wheel sensors at the valve or wrapped around the wheel? My shop seems to think cars from 1990 should have it wrapped around the wheel ... but they are at the valve (which is where I think they should be).

The car clunks good on idle from the "dual mass flywheel" . I need to do more searching for information on that. Not sure if it needs replaced, or if its typical to make that sound when the car LOPES more than stock (from the LPE mods).

Also there is a slight hesitation at 3500-4500 rpm if I am not "on it" ... is that when the secondaries are about to open up ... and is that typical? Thanks ---

[ZZZZZR1]

Originally Posted by alwayscode390

Just got the x-pipe installed today ... sounds AWESOME compared to the rattling sound it was making HAHAH.

Waiting on custom hubcentric spacers to be made for the Fikses ... will be another week until they are installed.

Are the wheel sensors at the valve or wrapped around the wheel? My shop seems to think cars from 1990 should have it wrapped around the wheel ... but they are at the valve (which is where I think they should be).

The car clunks good on idle from the "dual mass flywheel" . I need to do more searching for information on that. Not sure if it needs replaced, or if its typical to make that sound when the car LOPES more than stock (from the LPE mods).

Also there is a slight hesitation at 3500-4500 rpm if I am not "on it" ... is that when the secondaries are about to open up ... and is that typical? Thanks ---

Nate

Sounds like you have original fuel injectors. Did the owner give you service records? Ay idea what's been done?



David

[efnfast]

The sensors are baneded around the rim.

The dual mass flywheel should keep it from clunking. Maybe LPE installed a one piece.?

[Kevin]

Originally Posted by alwayscode390

Just got the x-pipe installed today ... sounds AWESOME compared to the rattling sound it was making HAHAH.

Waiting on custom hubcentric spacers to be made for the Fikses ... will be another week until they are installed.

Are the wheel sensors at the valve or wrapped around the wheel? My shop seems to think cars from 1990 should have it wrapped around the wheel ... but they are at the valve (which is where I think they should be).

The car clunks good on idle from the "dual mass flywheel" . I need to do more searching for information on that. Not sure if it needs replaced, or if its typical to make that sound when the car LOPES more than stock (from the LPE mods).

Also there is a slight hesitation at 3500-4500 rpm if I am not "on it" ... is that when the secondaries are about to open up ... and is that typical? Thanks ---

the dual mass shouldn't make noise, it's designed to absorb it which is why detecting a bad injector is so hard.

[alwayscode390]

Its had the LPE ported 465hp kit installed ( ported heads/plenum/cam lobes/valve job/Borla exhaust ) ... and he showed me a receipt for new injectors. He also gave me a bag full of the old injectors.

Is there a way the sensors are tuned out? When I start the car it says CHECK TPSM while running diagnostics for a second or two and then the light goes OFF.

The Flywheel sound is like knuckles cracking when the rpm goes low, then raises a tad until the car warms all the way up. I was told by the previous owner that this is ok ... but I hate the sound. Do the dual mass flywheels go "bad" and need replaced? If so, how much are they?

I may have to take a video of the sound and post it up for you all

Thanks ---

[Kevin]

check the lpe receipts, or the receipts in general for a single mass flywheel. I've heard them from no sound when paired with a balanced and blue printed bill b tranny, to marbles in a can, to a rod coming out of the block in a LSV

[alwayscode390]

You may be onto something ... it almost sounds like a rod knock or marbles. I will double check ... my receipts are super old and faded ... from 93' ... and LPE says they didn't start keeping records until 95' ... just my luck LOL ---

[efnfast]

I've considered doing a Fidenza flywheel (one piece), but I'm afraid the knocking noise will drive me crazy. I already don't like the way the chain tensioner rattles at start up.