Stalling problem fix

JeffWykos · #1 04-30-2006, 09:31 PM

Hi - Need some help

I’m new to the group. This group is great!! I have a Barcelona red 1994 with 91,000 miles on it. It’s been suffering with a stalling problem and will stall at a stop sign or as you pull out. I read all the posts and started to fix things. I changed the following things:

Replaced fuel filter
Cleaned the MAF with vinegar
Cleaned the idler air control valve (IACV)
Cleaned the throttle body
Checked the fuel pump by turning the key and letting the gas flow into a bottle—looked like good flow but I did not check the pressure

Did not change the PVC because I could not get it out.

Put it all back together. The car fired up great, was idling at about 2,000 rpm for about a minute, then started dropping down to 750 and was bouncing around. Stepped on the gas, went back up to 2,000, again started dropping down erratically and then stalled. Stared up again, ran for 10 seconds, then stalled. Now it turns over, engine kicks off a couple of times and then stalls, so it is progressively getting worse. I believe I put everything back correctly. Does anyone have any ideas of what may be causing this? Whatever I did seems to have made it worse.

Thanks
Jeff

Ron Mummert · #2 04-30-2006, 10:51 PM

See if you can beg, borrow or steal another MAF sensor. An Impreza one will fit. I too did the vinigar dip with no improvement. All stalling problems I had were cured with a "new" used MAF sensor.
Good luck, Ron.

19svx94 · #3 04-30-2006, 10:58 PM

check the ground on the back of the intake manifold, passenger side

JeffWykos · #4 05-01-2006, 03:14 PM

Thanks for the replies.

I checked the ground to the intake manifold, looks good, .4 ohms to the negative terminal. I'll have to look around for another MAF

I restarted the car and this time kept it accelerated at 2,000 rpm to see if it would change any after warming up. It seemed to suffer the same problem, cold and hot, which was a very rough idle that jumped all around and eventually would stall. The idle would go from 500 to 1,000 rpm almost as if it was pulsing several times before it would eventually die. Thanks everyone.

Jeff

madj80 · #5 05-01-2006, 03:18 PM

The same thing happened to my car. It was the MAF. It's amazing how many problems the MAF can be responsible for.

19svx94 · #6 05-01-2006, 04:17 PM

i am suprised that a MAF could cause problems like this because i have ran my car with the MAF unplugged while i was working on it and even then it runs