Have been having some trouble with the engine hesitating, bogging down and then dying for about 2 weeks now. Fires right back up but still runs like crap and will die again unless i keep the RPM's above 4k. If it sits for even a few minutes it will run normal. I recently got around to installing my wideband and found out that i have been driving around town with an air fuel ratio between 10-12 to one... what?! and when it starts to act up it pegs the gauge to 10.0, which is maxed out, so who knows what it really is at.
Seem like a MAF problem that i had before so i swapped one out (man it is really hard to find the metal MAFs). and it didnt fix it.
Got the car hot. without turning the car off, i disconnected the oxygen sensor and random misfire i have had forever went away and the AFR's went up to 13.2 and hung out there. I proceded to flog the car to within an inch of its life and it runs great, a bit rich as expected as it is now is default mode without a signal, but way better then with it attached. Which is good, seems like the sensor is bad.
I drove it like this for 35 miles. Started it up and drove 7 miles to work. so 42 miles total and i have still not thrown a check engine light. What the heck is up with that?
1990 runs like poorly when outside temp is high
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1990 runs like poorly when outside temp is high
1990 NA 2.2 Open Light rally car
Re: 1990 runs like poorly when outside temp is high
Turbo Subies:
'87 GL-10 Turbo - SOLD
'90 BJ EJ22T/DOHC & 5speed swap - SOLD
'04 FXT, Forged internals, VF39, STI TMIC, Cobb AP- SOLD
'93 Legacy SS - 5-speed, SOLD :-(
'02 WRX -SOLD
'96 BD-turbo'd-SOLD
'98 SF - NA-T
'87 GL-10 Turbo - SOLD
'90 BJ EJ22T/DOHC & 5speed swap - SOLD
'04 FXT, Forged internals, VF39, STI TMIC, Cobb AP- SOLD
'93 Legacy SS - 5-speed, SOLD :-(
'02 WRX -SOLD
'96 BD-turbo'd-SOLD
'98 SF - NA-T
Re: 1990 runs like poorly when outside temp is high
really? seems crazy that this wouldnt immediatley cause a CEL for no signal or low signal voltage. Especially with it running so badly it would have caused some other codes. i wish it had, would have saved me 50 bucks...
1990 NA 2.2 Open Light rally car
Re: 1990 runs like poorly when outside temp is high
Here's ONE (old) example of no CEL w/the O2 unplugged.
Turbo Subies:
'87 GL-10 Turbo - SOLD
'90 BJ EJ22T/DOHC & 5speed swap - SOLD
'04 FXT, Forged internals, VF39, STI TMIC, Cobb AP- SOLD
'93 Legacy SS - 5-speed, SOLD :-(
'02 WRX -SOLD
'96 BD-turbo'd-SOLD
'98 SF - NA-T
'87 GL-10 Turbo - SOLD
'90 BJ EJ22T/DOHC & 5speed swap - SOLD
'04 FXT, Forged internals, VF39, STI TMIC, Cobb AP- SOLD
'93 Legacy SS - 5-speed, SOLD :-(
'02 WRX -SOLD
'96 BD-turbo'd-SOLD
'98 SF - NA-T
Re: 1990 runs like poorly when outside temp is high
interesting... thanks for the link. The car is going down tonight to pull the cams for a regrind, but i will slap a new o2 in and repost if it fixes it.
1990 NA 2.2 Open Light rally car
Re: 1990 runs like poorly when outside temp is high
How old is the coolant temp sensor? That may be something else you may want to consider replacing if it's old.
Josh
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm