Replaced Crank and Cam Sensors: Still Dying

[BNaylor]

Sounds reasonable and if the rpms gets too low your alternator will not have the proper output. Your power brake booster may have a ruptured diaphragm. Also, check the check valve and vacuum line that comes off the backside of the UIM to the booster. You could run an inexpensive diagnostic check with an automotive vacuum tester. 0-30 hg type. Good engine vacuum will be around 15 to 22 in-hg at the intake manifold.

[Smith1000]

New power booster is in and it seems to be running well now. I could not get it to idle down or dip down too low once the new booster was installed (by pressing on the brake). I think I may have it fixed this time. The brake pedal seems firmer too.

I hope somebody had a good time putting those nuts on the back of the booster in the factory. I had a heck of a time getting one of them off. There was no room and it was hard to see. My 3 year old son came out and tried to help and got us both wedged in between the seats and the dash. He kept saying, "I got a bad bolt here." I ended up just leaving the nut off of one of the bolts and I put a couple of extra nuts on the opposite side.

My brother-in-law who is a military mechanic was up and was telling me it probably wouldn't be too bad of a job to replace it. He was then looking under the hood later and saying, "Ooh, oh, hmm, this doesn't look good and I see a lot of padding under the dash." He didn't stick around very long after that. He said many of them unbolt on the engine side.

We'll just have to drive it a while and see how it goes.

[jerryls]

I had the same problem and it took a long time to solve it. It ended up being the MAF sensor. Cleaning doesn't always solve the probelm. I had to get one from a junk yard for $25. I then had a high idle problem and that turned out to be the TPS. The stalling happens downhill becaus ethat is when the throttle is off and you are coasting. I doubt if the brakeing has anything to do with it. I've read others have had to change other sensors for similar problems, such as cps,etc, but I did not. Also, check all the vacuum hoses around the air intake, they sometimes get brittle and break or fall off.- Good luck

[Smith1000]

Thanks. I'll keep the MAF sensor in mind as an item to check should it return. It is one of the items I have not swapped out as a test. This would idle down when stepping on the brake even when sitting in the driveway. It would sometimes die when coasting. It may still do that at some point. That could still be a problem.