just recently my wife's passat started having problems accellerating both from dead stop and from a corner. she'll give gas and it starts to choke/sputter for a little bit then finally starts to accelerate(occasionally the car will stall). it's gotten more noticeable over the past month. we've had the plugs changed, the wires changed, fuel filter changed but i still can't figure the damn thing out. i've added fuel additives to clean the injectors. what it reminds me of is bad timing, but we had that looked at as well. any known issues with the passat similar to this?
any suggestions are most appreciated.
99 passat 1.8t
108000 miles
recently had plugs air filters changed. fuel filter not changed.
p.s. i've tried looking for the mass airflow sensor to disconnect it but i cannot seem to find the darn thing.
Thanks!
joe
**update**
ok, was able to get the codes.
P0103 MAF or VAF a circuit high input
P1127 Manufacture control feul air metering.
per chiltons P1127 means running rich.
I'm still running real bad after having disconnected the MAF for a little bit. I've checked all of the vacuum hoses for leaks and couldn't find any. I'm currently trying to test the fuel pressure but i'm stuk because I cannot remove the fuel line. the clamps a re bit tough to undo. any advice? the only tools I've got atm are a pair of needle nosed pliers. thoes are the only things i can get near the fuel line to try to undo the clips. (btw thw spot I'm trying to tets is where the rubber fuel line meets the metal line near the firewall.)
**update6/9/09**
ok the lurching has ceased after i replaced a couple of bad vacuum lines, however, the car still stalls when coming to a stop. the only thing i can do to stop from stalling is to tap on the gas real quick. my f-in-law changed the fuel filter and said in his 30+ years in the business he's never seen a filter so clogged. i disconnected the MAF and still have the same issues, i'm wondering now if it's a fuel line/fuel pump issue. any way to diagnose that easily?
Thanks!
ras.
any suggestions are most appreciated.
99 passat 1.8t
108000 miles
recently had plugs air filters changed. fuel filter not changed.
p.s. i've tried looking for the mass airflow sensor to disconnect it but i cannot seem to find the darn thing.
Thanks!
joe
**update**
ok, was able to get the codes.
P0103 MAF or VAF a circuit high input
P1127 Manufacture control feul air metering.
per chiltons P1127 means running rich.
I'm still running real bad after having disconnected the MAF for a little bit. I've checked all of the vacuum hoses for leaks and couldn't find any. I'm currently trying to test the fuel pressure but i'm stuk because I cannot remove the fuel line. the clamps a re bit tough to undo. any advice? the only tools I've got atm are a pair of needle nosed pliers. thoes are the only things i can get near the fuel line to try to undo the clips. (btw thw spot I'm trying to tets is where the rubber fuel line meets the metal line near the firewall.)
**update6/9/09**
ok the lurching has ceased after i replaced a couple of bad vacuum lines, however, the car still stalls when coming to a stop. the only thing i can do to stop from stalling is to tap on the gas real quick. my f-in-law changed the fuel filter and said in his 30+ years in the business he's never seen a filter so clogged. i disconnected the MAF and still have the same issues, i'm wondering now if it's a fuel line/fuel pump issue. any way to diagnose that easily?
Thanks!
ras.