85 RX7 GS Auto dies when brake is pushed or put in gear
05-20-16, 12:30 PM
#1
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85 RX7 GS Auto dies when brake is pushed or put in gear
Car Information:
1985 RX-7, 1.1, 12A, Automatic Transmission. Approx. 72,000 original miles.
Dropped gas tank, flushed it. Changed fuel filter, plugs, transmission fluid and filter. Ran Sea Foam in gas tank after cleaning tank and changing filter. Put "trans tune" (sea foam transmission cleaner) in transmission prior to changing filter and fluid.
Problem:
Car dies when brake pedal is pressed or placed in Drive or Reverse. Must feather gas to get going.
Car has to idle at around 1,000 to 1,200 rpm to stay running. I checked timing, and it is now relatively close after realizing previous owner had the coil wires backwards, but can not get accurately tuned due to having higher rpms and cannot put in D, without stalling. When increased rpm's sounds great. I feel this is vacuum related and possibly bad power brake booster. I hope to have vacuum test run this weekend. Any information prior to testing power brake booster would be appreciated.
Note:
I have driven the car for a total of about 10-miles (2-3 miles at a time) around the block. In order to do this, I have to feather the gas pedal to get it in drive without stalling. then while driving, I have to have one foot on the brake and one on the gas at stop to keep rpms high enough not to stall. Seems a little weak on what the power should be but sounds really good running out. Car does not smoke. It has been a while since I have driven a car from this era, but the brakes do feel a little stiff from what they should be.
Thanks
1985 RX-7, 1.1, 12A, Automatic Transmission. Approx. 72,000 original miles.
Dropped gas tank, flushed it. Changed fuel filter, plugs, transmission fluid and filter. Ran Sea Foam in gas tank after cleaning tank and changing filter. Put "trans tune" (sea foam transmission cleaner) in transmission prior to changing filter and fluid.
Problem:
Car dies when brake pedal is pressed or placed in Drive or Reverse. Must feather gas to get going.
Car has to idle at around 1,000 to 1,200 rpm to stay running. I checked timing, and it is now relatively close after realizing previous owner had the coil wires backwards, but can not get accurately tuned due to having higher rpms and cannot put in D, without stalling. When increased rpm's sounds great. I feel this is vacuum related and possibly bad power brake booster. I hope to have vacuum test run this weekend. Any information prior to testing power brake booster would be appreciated.
Note:
I have driven the car for a total of about 10-miles (2-3 miles at a time) around the block. In order to do this, I have to feather the gas pedal to get it in drive without stalling. then while driving, I have to have one foot on the brake and one on the gas at stop to keep rpms high enough not to stall. Seems a little weak on what the power should be but sounds really good running out. Car does not smoke. It has been a while since I have driven a car from this era, but the brakes do feel a little stiff from what they should be.
Thanks
02-12-20, 03:08 PM
#2
1985 GS RX7 Brake Booster
Having problems with idle, need Brake Booster but I have called all Auto Parts and no one has one.
Also check around Google but to no luck.
If you know please let me know.
Elliott Rodriguez
abbarod@gmail.com
Also check around Google but to no luck.
If you know please let me know.
Elliott Rodriguez
abbarod@gmail.com
02-20-20, 09:18 AM
#3
ancient wizard...
Welcome to the site. Old thread,not many would notice your post here. Best to start a new thread for questions for your car.
Give this company a call,i have had several brake boosters rebuilt by them. Send them your booster and they'll send it back rebuilt,turnaround time 10-14 days average.
Power Brake Exchange
260 Phelan Ave.
San Jose Ca.95112
# 408-292-1305
Post some pics of your car,we love to see members cars. This is a great forum with lots of helpful people.
Give this company a call,i have had several brake boosters rebuilt by them. Send them your booster and they'll send it back rebuilt,turnaround time 10-14 days average.
Power Brake Exchange
260 Phelan Ave.
San Jose Ca.95112
# 408-292-1305
Post some pics of your car,we love to see members cars. This is a great forum with lots of helpful people.
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Elliott Rodriguez (12-15-20)
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