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1994 CADILLAC DEVILLE THAT SHUTS OFF WHILE DRIVING IT. BUT STARTS RIGHT UP. SOMETIMES I HAVE TO PUT CARB,CHOKE CLEANER TO START THE CAR.AND WHEN AM AT THE STOP LIGHT AND MY FOOT IS ON THE BRAKES THE CAR JUMPS.I DID NOT CHANGED THE FUEL FILTER

I CHANGED THE:
1. FUEL PUMP
2. SHARK PLUGS

Submitted: 670 days and 6 hours ago.

Category: Car

Value: $9

Status: AWAITING CUSTOMER ACTION

Optional Information:
1994 Cadillac DEVILLE 4.9

Posted by gmplus 670 days and 6 hours ago.

Answer

Hi There!
Thanks for Choosing Just Answer.
This could be caused by a blackish residue buildup within the throttle plate area of the air intake. Using a suitable aerosol cleaner , clean both sides of the throttle plate as well as the surrounding area of this blackish residue and see if this resolves your problem. I would also change the fuel filter, and if it continues have the fuel pump pressure verified.
Thank You! Please hit ACCEPT for my efforts, Positive feedback and BONUS welcomed!

670 days and 6 hours ago.

Reply

what is a blackish residue buildup,suitable aerosol cleaner.

Answer

HI again,
The blackish residue is just deposit that has built up over time.
A tuneup/injector cleaner mixed with gasoline (1:4 or 1:5 ratio) should be safe.Start by cleaning the exterior of the throttle plate, and then hold it open using a wire tied to the throttle linkage so you can clean the inside perimeter of the plate. All you're trying to do with brushing is to loosen all the deposits. I would start with this and see if it makes a difference.
Thank You! Please hit ACCEPT for my efforts, Positive feedback and BONUS welcomed!

Accepts:
Expert:	gmplus
Pos. Feedback:	99.5 %
Answered:	1/22/2008

Technician

6 years car repairs

Posted by gmplus 670 days and 5 hours ago.

Info Request

Hi Again,
Where you getting a Check engine Light by any chance?

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1994 CADILLAC DEVILLE THAT SHUTS OFF WHILE DRIVING IT. BUT STARTS RIGHT UP. SOMETIMES I HAVE TO PUT CARB,CHOKE CLEANER TO START THE CAR.AND WHEN AM AT THE STOP LIGHT AND MY FOOT IS ON THE BRAKES THE CAR JUMPS.I DID NOT CHANGED THE FUEL FILTER I CHANGED THE: 1. FUEL PUMP 2. SHARK PLUGS

Optional Information

Optional Information: 1994 Cadillac DEVILLE 4.9

Answer

Reply

what is a blackish residue buildup,suitable aerosol cleaner.

Answer

Info Request

Hi Again,Where you getting a Check engine Light by any chance?

Related Car Questions

1994 CADILLAC DEVILLE THAT SHUTS OFF WHILE DRIVING IT. BUT STARTS RIGHT UP. SOMETIMES I HAVE TO PUT CARB,CHOKE CLEANER TO START THE CAR.AND WHEN AM AT THE STOP LIGHT AND MY FOOT IS ON THE BRAKES THE CAR JUMPS.I DID NOT CHANGED THE FUEL FILTER

I CHANGED THE:
1. FUEL PUMP
2. SHARK PLUGS

Optional Information:
1994 Cadillac DEVILLE 4.9

Hi Again,
Where you getting a Check engine Light by any chance?