Hot damn, I fixed my car, first shot. Did I btch here about my car's stumbling problem? I was driving around one day, and slammed on my brakes because of a lady blocking the road. Shortly after, my car tried to idle at 400 rpm, and I lost power brakes, the car wanted to stall, etc. When I got where I was going, I tried to start it again- it wouldn't start unless I had my foot in it. I went for a drive, using both feet to drive when I came to a stop (keep the RPM's high and therefore keep my power brakes). Soon after that, I found my master cylinder was leaking.

This happened a few random times after that. I was told brake fluid can screw up a booster, so I thought I had a vacuum leak in the booster. Yesterday, I planned to check the plugs when I got home. I stopped for a light, and the car started acting up- perfect! I was a few hundred feet from home.

I got home, popped the hood, removed the vac line from the booster, plugged the vac line with my thumb, and started the car- it still acted up. I turned it off, and plugged the vac line back in - it's not the booster!

I then look at the engine - and it hit me - EGR valve! I put my hand underneath and sure enough, the diaphragm was stuck all the way up. I started the car, and used my compressor to give the EGR valve 10 PSI of air- the EGR valve slammed shut, and the car went from no-idle to perfect-idle.

So, now, the EGR vac line is plugged with a golf tee. Looks like I'll be doing an EGR valve soon- thank goodness I have the vacuum unit and not the expensive digital one!


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-Tom P (Hot rodded 1986 Firebird 2.8l)

 

Hehe, I how you feel when you fix things all by yourself.

Does EGR effect preformance any? Cuz today when I was fixing all my vacuum lines, the ERG line to the canister had come off. I didnt know but I took the car out for a drive. Popped the hood to make sure everything was coo, cept i noticed a unusual hiss, which was the line. I plugged it back in and took it for another drive, which i didnt notice any change.

BTW, the vac lines brought back my throttle response and i got rid of the reluctancy my car had revin past 5k. Take it easy to 6.2k now. I just hope my gas milage went up too. Payce.

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85 2.8L Sport Coupe 5-speed.
Mods: Hpertech chip and powerstat, MSD 6A-L, Crane fireball coil, Accel Cap and Rotor, Dynomax hi-flow cat and catback system with a dynomax magnum race bullet muffler on the i-pipe, K&N filterchargers, Gutted Air Boxes, 8mm Wires, Eibach Sportlines and Tokiko springs/shocks setup, Global west sub frames, Suspension techniqs front and rear sway bars, and good ole 88 IROC wheels with Kumo Ecstas on em!
"It's not the ricers, it's those damn V8's!"

Wins: 2000 V6 Accord, 69 302 Mustang, 2000 Auto VR6 Jetta, 89 Toyota MR2, 90 Civic Si, 76 350 Camaro, 2000 3.8 5-speed Camaro, ~68 Chevelle 350, 92 CRX Si.