Okay, along the way on the Power Tour I developed a pop in the right front when I would come to a stop. When I take off from the stop, it pops again. Just a single pop, enough you can slightly feel in the floorboard. I thought it was just my trashed motor mount, but I replaced that tonight and I still have the pop.

Any ideas? Notable front end mods would be lowering springs, shortened dogbones and F-body brakes. Everthing looks A-OK, so really stumped on this one and hoping someone has had this happen and can't point me in the right direction before I start "one-at-a-timing" front end parts.

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NGA Master Certified Auto Glass Technician
Kansas City Pontiac Motorsports Club
My F-Quick Garage
My GPF Garage

Okay, I dont have a specific answer, but Im just gonna kinda work this through cause the only such popping Ive ever had was due to a bad wheel bearing, but that only happened in sharp turns like maneuvering in a parking lot.

When you come to a stop. the rear unloads to some extent and weight is transfered to the front. Likewise when you take off, the front unloads and the weight is transfered to the rear. That itself would have me inspecting the struts and related components. I dont 'think' the sway bar and end links would be the issue, but I would at least inspect the end links since they are connected to the LCA and would perhaps be moved some due to strut action.

The only other thing I can think of after that would be the ball joint but I dont see one popping like that unless it has just bound up, but they typically dont do that. My best guess would be to check the thing that would bind and such when stopping and release when taking off.

I suppose the upper motor mount bushings could be at fault too and easy enough to inspect, but I would thing a failure there would result in some knocking or something just revving the motor as it would allow more movement regardless of stopping or taking off.

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Scotty Hall
Bartlesville, OK
2001 Pontiac Grand Prix GTP
It whines a lot, but I like it.

Even if you shoot for the moon and miss, you still land among the stars.

Strut mount seems to be the overwhelming answer on our local boards. Suppose that's as good of place as any to start. Swash replaced the driver's side one before I bought the car, so the passenger one may be the culprit afterall.

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NGA Master Certified Auto Glass Technician
Kansas City Pontiac Motorsports Club
My F-Quick Garage
My GPF Garage

I have had a ball joint on every gm car I have own go out. It would pop while going over bumps and whatnot but I don't remember about stopping and accelerating. I would check the cradle bolts also.

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Red 2dr 99 GTP: Z7 t66, A/A IC'd, Custom Heads, 65# Inj, ST2 Cam, Meziere Elec Pump, JP Double Roller(with machined crank gear), Plogs, PLX W/B, Powrtuner

99 Regal GS (work car)

...could also check the LCA bushings/bolts

My bet is with cradle bolts.

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2004 Impala LS - got some mods
NAIOA Moderator

Tie rod end.

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2.8 Pulley, Intense IC, P&P Gen V, Machined Intake, Intense PCM, 65lb/hr Injectors, N* Throttle Body, 1 3/4" Headers, 3" Exhaust, Intense Shift Kit, 3.69:1 Gears, 4000 Stall, N20

^^^ LOL! Looks like a whole new front end is in my future. haha

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NGA Master Certified Auto Glass Technician
Kansas City Pontiac Motorsports Club
My F-Quick Garage
My GPF Garage

I've seen CV shafts do this also. A complete front end rebuild should solve your problems.

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1998 GTP , CAI box
Waiting for install: 3.4 pulley

and isn't really that expensive, and won't hurt if you have a few miles on the car

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Steve
'97 GTP VS cam, ZZP PCM, and not much else yet