p1179
#1
p1179
Started yesterday
I swapped in 3 MAF I have all same result
I see no vacume leaks, but the exhaust smells wrong no cats I can tell
O2, TPS both look normal on the ug
At idle MAF is .08
TPS is 11.8
O2 are both moving 995/1000
Idle keeps 650/750 ish
Sounds like it wants to die on startup
Unplug the vacume to fuel reg and it makes no difference, plug the intake port and possible minor improvement no smell of raw fuel
I have not checked fuel pressure
I swapped in 3 MAF I have all same result
I see no vacume leaks, but the exhaust smells wrong no cats I can tell
O2, TPS both look normal on the ug
At idle MAF is .08
TPS is 11.8
O2 are both moving 995/1000
Idle keeps 650/750 ish
Sounds like it wants to die on startup
Unplug the vacume to fuel reg and it makes no difference, plug the intake port and possible minor improvement no smell of raw fuel
I have not checked fuel pressure
#2
Same thing here. After replacing the ivac, tsp, maf (twice), fuel temp, air temp, and crank sensor, I had a brit shop put it on their scan tool to set the idle & they found the air temp at the ecu was reading -38 even though the UG was reading close to ambient temp. Checked with a few other brit shops who confirmed the -38 was a computer issue and would read different than the UG. Waiting for my replacement ecu & alarm ecu to get here from WA since that was the only place who had both parts as a matched set. Yours is a 98 & if you have the type 01 80801A they are hard to find.
#4
#9
You have too much oxygen in the A/F ratio and the ECM is telling the injectors to max pulse to put more fuel into the cylinders. A dirty MAF, dirty O2's, low fuel pressure or vacuum leaks are the items to chase. I know you put O2's in so it's not them, you've tried three MAF's with no change, you haven't looked for a vacuum leak that I know of and you just posted the fuel pressure and it's lower than it should be by almost 3 pounds per square inch at the minimum spec level. Fuel filters, pump, vacuum........
Last edited by ihscouts; 08-30-2014 at 08:58 PM.