Missouri T
New Member
- Joined
- Jul 27, 2003
- Messages
- 315
Hi folks,
I'll be cruising along on the highway holding 128-130 BLM's and, all of a sudden, they'll drop straight to 115 and the car will stumble.
Then the BLM's will slowly creep back up to the 128-130 (takes about 5 seconds).
There is no rhythm to it at all, just out of the blue.
It happened 6 times on me in 16 miles one day going to work.
When this happens:
The O2's go up to the mid 800's.
The car will stumble and be sluggish to accelerate.
I checked fuel pressure (43PSI base with hose off, about 38 with hose on) when this happens today with my "windshield test gauge" and it is rock steady so no problem there.
Cruise is smooth as can be otherwise.
The only other oddity about my combo is the RPM's drop quite a bit (almost stalling every now and then) when coming to a stop. They do recover.
TT pump gas chip (actually an updated one Eric sent me that helped my idle-in-park-hot immensely)
4" Full Throttle Mass Air (new style mass air)
All numbers on the Scanmaster are spot-on, believe me....I'm extremely watchful of my sensor settings.
Any help is appreciated.
Thanks.
I'll be cruising along on the highway holding 128-130 BLM's and, all of a sudden, they'll drop straight to 115 and the car will stumble.
Then the BLM's will slowly creep back up to the 128-130 (takes about 5 seconds).
There is no rhythm to it at all, just out of the blue.
It happened 6 times on me in 16 miles one day going to work.
When this happens:
The O2's go up to the mid 800's.
The car will stumble and be sluggish to accelerate.
I checked fuel pressure (43PSI base with hose off, about 38 with hose on) when this happens today with my "windshield test gauge" and it is rock steady so no problem there.
Cruise is smooth as can be otherwise.
The only other oddity about my combo is the RPM's drop quite a bit (almost stalling every now and then) when coming to a stop. They do recover.
TT pump gas chip (actually an updated one Eric sent me that helped my idle-in-park-hot immensely)
4" Full Throttle Mass Air (new style mass air)
All numbers on the Scanmaster are spot-on, believe me....I'm extremely watchful of my sensor settings.
Any help is appreciated.
Thanks.