1986 bronoc stumble
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New User
Joined: Jul 2002
Posts: 14
Likes: 0
From: texas
1986 bronoc stumble
1986 302efi at around 1200rpm i get a slight stumble.
did a full tune up plugs wires, rotor,cap o2senor,fuel filter
no help.pulled codes get code 31 changed egr valve evp sensor and checked wiring no help still get code 31changed ecm still get code 31 can code 31 cause a stumble or is it something else.need help thanks mike
did a full tune up plugs wires, rotor,cap o2senor,fuel filter
no help.pulled codes get code 31 changed egr valve evp sensor and checked wiring no help still get code 31changed ecm still get code 31 can code 31 cause a stumble or is it something else.need help thanks mike
Laughing Gas
Joined: Jul 2001
Posts: 1,019
Likes: 3
From: Bismarck, ND
1986 bronoc stumble
I'm just throwing out ideas, here, for other items you may want to check, but I'm unsure as to whether they'd trigger the code 31: MAP sensor, throttle position sensor, TFI ignition module.....
Thread Starter
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New User
Joined: Jul 2002
Posts: 14
Likes: 0
From: texas
1986 bronoc stumble
i changed map sensor and tfi module checked fuel press within limits.i am going to make up a longer hose and check while i drive. i also checked tps sensor it checks good but problem does not happen all the time.
Thread Starter
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New User
Joined: Jul 2002
Posts: 14
Likes: 0
From: texas
1986 bronoc stumble
change the tps sensor no help still stumbles around 1200 and i still have code 31 need help
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Tuned
Joined: Mar 2002
Posts: 250
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From: Grants Pass, OR
1986 bronoc stumble
[updated:LAST EDITED ON 06-Aug-02 AT 07:39 PM (EST)]Does this happen when your driving only or if you have it park too? I just replaced my TFI Module recently and shortly after I started to experience the same problem at about 1500 RPM. It almost seems like the tranny can't decide to upshift or not. Maybe it's slipping. Still trying to figure it out.
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