The 3800 rpm hesitation, how did you fix your problem?
08-29-09 | 03:10 AM
#2
Full Member
Joined: Mar 2009
Posts: 74
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From: reading,pa
make sure ur trail coil is bolted down fully, or replace ur trail coil, check ur spark at the trail end, or check to see if your pick-up coil is still firing. I had that problem, my tach wouldn't work becasue i didn't get spark on trails, which caused 3800 rpm hesiataion, i had to replace my pick up coil and trail coil in order to fix both problems.
09-03-09 | 07:28 AM
#4
Right near Malloy
iTrader: (28)
Joined: Dec 1999
Posts: 7,847
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From: Behind a workbench, repairing FC Electronics.
I was experiencing these symptoms:
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/need-some-help-n-engine-bogs-down-cuts-out-832666/
I did this (2nd post) to fix it:
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/3800-rpm-hesitation-860514/
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/need-some-help-n-engine-bogs-down-cuts-out-832666/
I did this (2nd post) to fix it:
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/3800-rpm-hesitation-860514/
It can be intermittent.
It will most likely do it with higher load on the engine (IE Higher gears) which will call on the secondary injectors.
I had this problem on a 1988 GTU where it'd do it only if I accelerated hard. If I went easy on the throttle and S-L-O-W-L-Y put it down, it'd go just fine.
Found the whole bolt loose.
The ground is easy to find. On your intake manifold, near the oil filler cap is the IACV motor. It's about the size of a couple D batteries end to end. Slightly to the rear is another solenoid valve that has a bracket to the intake and another bracket that goes down to the rear rotor housing. The bolt that holds the bracket to the rotor housing also holds down a wire.
Spray that wire with brake parts cleaner and see what its condition looks like.
It will most likely do it with higher load on the engine (IE Higher gears) which will call on the secondary injectors.
I had this problem on a 1988 GTU where it'd do it only if I accelerated hard. If I went easy on the throttle and S-L-O-W-L-Y put it down, it'd go just fine.
Found the whole bolt loose.
The ground is easy to find. On your intake manifold, near the oil filler cap is the IACV motor. It's about the size of a couple D batteries end to end. Slightly to the rear is another solenoid valve that has a bracket to the intake and another bracket that goes down to the rear rotor housing. The bolt that holds the bracket to the rotor housing also holds down a wire.
Spray that wire with brake parts cleaner and see what its condition looks like.
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