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Old 05-27-2012, 06:52 PM   #1
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Default Extreme hesitation under load

My set up
1993 1.6
diypnp
sr20 turbo
rx7 injectors

Just recently rebuilt the motor replacing all the seals.

Anyways ever since I got it back together it has this terrible hesitation whenever I hit the gas. Ill press the gas for a second nothing happens then my afr goes to 9 and its just ------- awful. If i slowly easy into the throttle carefully it wont due it but at any point in time when I hit the throttle it just bogs out for a slight second afr goes full rich then my car lunges forward and finally everything compensates for itself. As of right now I do not have a variable tps. I haven't installed one yet because I have not had problems like this before.

This is extremely frustrating and i am posting it in the megasquirt section as I think it has something to do with tuning.
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Old 05-27-2012, 07:08 PM   #2
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It probably does have to do with tuning, but we need a tune and a log of it.

do yourself a favor and get a variable TPS before doing anything more though.
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Old 05-27-2012, 07:10 PM   #3
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before this happened the car ran perfectly fine without a vtps
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Old 05-27-2012, 07:12 PM   #4
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I have a log. I honestly don't know how to post a datalog or my tune
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Old 05-27-2012, 07:13 PM   #5
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doubtful it ran perfectly fine, I've also used the systems without a tps and I would suggest if you have the ablitiy to get one, get it.

manage attachments while you are making a post, under additional options
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Old 05-27-2012, 07:14 PM   #6
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I have the ability to put one in
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Old 05-27-2012, 07:25 PM   #7
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my tune
Attached Files
File Type: msq CurrentTune.msq (76.6 KB, 51 views)
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Old 05-28-2012, 08:21 AM   #8
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disable AE & retry, see if symptoms are the same or if it goes lean instead (change MAPdot throshold to 1000 or something)

Save a log & post it up here while you do it.
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Old 05-29-2012, 09:54 AM   #9
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Old 05-29-2012, 11:41 AM   #10
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Sorry if I could drive my car I would. I have a hole in my rear water neck and all the coolant pretty much leaked out of my car but I think it's my iat to blame for this.
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