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Car Forum / Driving, Maintenance, Tuning / General Car Topics / July 2008Dies on Hard Brake
My dad has a 1988 Chevrolet Celebrity that is stalling on hard braking. Get the car up to about 30 MPH, come down hard and constant to a "rocking" stop and the engine stalls and dies. Repeat the procedure but ease up on the brake when you get to about 10 MPH and then reapply and the engine does not stall. Repeat the procedure but place the car in nuetral prior to braking and the engine does not stall. One shade tree mechanic says the fuel pump is bad and he wants to replace it. My guess is the tranny is the culprit - almost like it's not downshifting fast enough. Any ideas or comments would be greatly appreciated. Thanks. If this is a carbureted engine, it could be the float level. I would also check for vacuum leak in the brake booster (maybe the check valve) and have the torque converter pressures checked. HTH, John > My dad has a 1988 Chevrolet Celebrity that is stalling on hard braking. > [quoted text clipped - 14 lines] > > Thanks. Sorry for the lack of detail... it's a 2.5 (or 2.8 liter - I don't recall which) fuel injected engine. > If this is a carbureted engine, it could be the float level. I would also > check for vacuum leak in the brake booster (maybe the check valve) and have [quoted text clipped - 20 lines] > > > > Thanks. >Sorry for the lack of detail... it's a 2.5 (or 2.8 liter - I don't recall >which) fuel injected engine. 2.5 is a 4 banger and the 2.8 is a V6. Try some throttle body cleaner in the intake and clean out the throttle plate - and the Air Idle port - and the PVC valve. P It's a 2.8 liter. > >Sorry for the lack of detail... it's a 2.5 (or 2.8 liter - I don't recall > >which) fuel injected engine. [quoted text clipped - 4 lines] > > P > My dad has a 1988 Chevrolet Celebrity that is stalling on hard braking. > > Get the car up to about 30 MPH, come down hard and constant to a "rocking" > stop and the engine stalls and dies. > Any ideas or comments would be greatly appreciated. > > Thanks. It's the torque converter lock-up solenoid. When it sticks on the car acts like a manual trans car when you come to a stop without depressing the clutch. I've replaced dozens of these. It's usually less than $250 from a good shop. Are you a DIY'er? HTH, Ben Yes I am a DIY'er. Can you please explain what causes the soleniod to stick on and why the car stalls ONLY if you come down hard on the brakes and stay on them hard until the car makes a full "rocking" stop? Recall that it deosn't stall if you let off the brake at about 10 MPH and then gradually reapply he brake and come to a full stop. Thanks much, Randy > > My dad has a 1988 Chevrolet Celebrity that is stalling on hard braking. > > [quoted text clipped - 13 lines] > HTH, > Ben > Yes I am a DIY'er. > [quoted text clipped - 3 lines] > off the brake at about 10 MPH and then gradually reapply he brake and come > to a full stop. oops.... i should have read a bit better... if it were me, i'd do what was suggested before and clean the throttle plate. maybe pinch off the vacuum hose to the brake booster and drive to see if it improves if it can be done safely. ben |
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