Rtek timing question
#27
RotoriousRx7
Join Date: Oct 2005
Location: goodlettsville,tennessee 37072
Posts: 1,236
Likes: 0
Received 0 Likes
on
0 Posts
no our cars have the issue between cruising throttle between 2-3k
not just 2800-3000 and as the wankler staed we ahave a missfire/fuel cut like symptom, not hesitation, only during this light throttle application does it occur.
what we need to do is narrow downj what all is being used and turn on and off during the cruise (like what sensors and ecu functions?)
not just 2800-3000 and as the wankler staed we ahave a missfire/fuel cut like symptom, not hesitation, only during this light throttle application does it occur.
what we need to do is narrow downj what all is being used and turn on and off during the cruise (like what sensors and ecu functions?)
#28
destroy, rebuild, repeat
iTrader: (1)
although some people have the staging problem on stock injectors due to bad grounds, but still not an rtek problem
Originally Posted by rogrx7
How is it so different?
At 2800-3000 my car acts funny and your car acts funny.
The only difference is our mods
At 2800-3000 my car acts funny and your car acts funny.
The only difference is our mods
the thing is, if you look at the rtek logs during the cruising hesitation, there is nothing crazy going on in the injector p/w log.. i am getting afr in the 18's in the hesitation spots, you would think you would see somehting in the injector log showing subtantially smaller p/w, but you dont. I really dont think that it is the fuel map like hailers suggested, b/c it will be cruising along fine at 13's afr, then alll the sudden it stumbles and AFR drops to 18's, but at the SAME rpm, vacuum, afr, tps, etc I would think if it was the fuel map, it would run like crap all the time in that area, but it doesnt.. its intermittent
somebody should start a poll or somthing describing mods for those with the cruising hesitations, maybe it has to do with the 720/720 fuel preset? the cruising problem actually started happening to me when i switched from the 550/720 to 720/720 preset.. and i have +10% fuel added in vacuum, all rpms on 750cc primaries
Is anybody getting the cruising hesitations on stock primaries?
#33
Rotary Enthusiast
iTrader: (1)
Remember porting is just like changing cams on a piston engine. It changes the way the engine "breathes", AKA, its volumetric efficiency at all RPM ranges. While the AFM should compensate for this somewhat, it still may not be optimal.
What I've noticed is even a street port will greatly increase the part throttle fuel requirements.
What I've noticed is even a street port will greatly increase the part throttle fuel requirements.
#34
Turbovert done.
iTrader: (11)
no our cars have the issue between cruising throttle between 2-3k
not just 2800-3000 and as the wankler staed we ahave a missfire/fuel cut like symptom, not hesitation, only during this light throttle application does it occur.
not just 2800-3000 and as the wankler staed we ahave a missfire/fuel cut like symptom, not hesitation, only during this light throttle application does it occur.
https://www.rx7club.com/rtek-forum-168/update-my-2800rpm-buck-669459/
Then we both have similar problems.
This is not the 3800 hesitation. I am like everyone else...I just want to get the problem fix and enjoy my car. I never said the issue was just between 2800 and 3000k. I said my issue and his issue happens around the same rpm range.
There might be two problems...but the fix is probably going to kill 2 birds with one stone.
#35
FKITALL
iTrader: (14)
I'm not talking about your car, I said Wankler and Unless he got this fixed
https://www.rx7club.com/showthread.php?t=669459
Then we both have similar problems.
This is not the 3800 hesitation. I am like everyone else...I just want to get the problem fix and enjoy my car. I never said the issue was just between 2800 and 3000k. I said my issue and his issue happens around the same rpm range.
There might be two problems...but the fix is probably going to kill 2 birds with one stone.
https://www.rx7club.com/showthread.php?t=669459
Then we both have similar problems.
This is not the 3800 hesitation. I am like everyone else...I just want to get the problem fix and enjoy my car. I never said the issue was just between 2800 and 3000k. I said my issue and his issue happens around the same rpm range.
There might be two problems...but the fix is probably going to kill 2 birds with one stone.
We have similar problems. I have been kinda burnt out the last couple days to work on it. I will be back from vacation this Saturday and start working on it again. For you and I, seems to be a temp issue. Could be the Thermo Temp Sensor. ????????? Ill hit the wrecker and get a few things to swap out.
I like you, just want to drive my car without ANY wired little ticks. I could just ramp riht past the tick I am getting, but why. Spent too much time for that. Would you mind unplugging Thermo Temp Sensor and see what happens?
Chris
#36
Slide or die
Join Date: Sep 2004
Location: Vallejo, Ca
Posts: 186
Likes: 0
Received 0 Likes
on
0 Posts
I have not played or used an Rtek yet, but my expirience as a smog tech when a car (ANY VEHICLE) has CTS (coolant temp sensor) issues, its usually because the sensor is out of range. & I have NEVER had it happen that a car runs LEANER cause of a temp sensor issue. It always runs PIG RICH. at ANY RPM, & it ussually has trouble starting & idling. If it was a Temp sensor isue it would be through out the entire rpm band. idle to redline. It wouldnt matter if it was cold or not. If the temp sensor was bad (out of range, or open) using an ohm meter, it would think that it was way colder that it actually is like -32 degrees, therfore adding way too much extra fuel. This problem is probably cause by a AFM (air flow meter), Map sensor, tps adjustment since the almost never go bad.
I had a similar problem on a S4 that I am workin on. It was basically stock, full exhaust, S5 turbo, Fed secondarys first, ceramic clutch flywheel, walbro, greddy boost conrtoller, all emmisions removed, NEW TPS. We had a slight detonation under light throttle. We actually ended up cracking the rear plate.
We replaced it with a s5 rear iron, & now added 720 secondarys, a stage 3 BNR turbo from the s5 that was on there. I was going to add a SAFC Neo, but now am looking for a Rtek 2.0. Its now running, but have not driven it yet due to a BAC valve/idle problem. & its probably not a good idea to be running that BNR setup with the stock ECU. Hense the Rtek is now in progress.
I suggest replacing the AFM witha known good part, if not that then the MAP sensor. GOOD LUCK GUYS, I'll be checkin in.
I had a similar problem on a S4 that I am workin on. It was basically stock, full exhaust, S5 turbo, Fed secondarys first, ceramic clutch flywheel, walbro, greddy boost conrtoller, all emmisions removed, NEW TPS. We had a slight detonation under light throttle. We actually ended up cracking the rear plate.
We replaced it with a s5 rear iron, & now added 720 secondarys, a stage 3 BNR turbo from the s5 that was on there. I was going to add a SAFC Neo, but now am looking for a Rtek 2.0. Its now running, but have not driven it yet due to a BAC valve/idle problem. & its probably not a good idea to be running that BNR setup with the stock ECU. Hense the Rtek is now in progress.
I suggest replacing the AFM witha known good part, if not that then the MAP sensor. GOOD LUCK GUYS, I'll be checkin in.
#37
HAILERS
Join Date: May 2001
Location: FORT WORTH, TEXAS,USA
Posts: 20,563
Likes: 0
Received 21 Likes
on
19 Posts
With a RTEK all one has to do to see if the water thermo sensor is working or not ......is to simply look at the water temperature on the RTEK. The water temperature FOR the RTEK display,is taken from the water thermo sensor. If you see 180* give or take, it's working good (the water thermo sensor).
And if one of the sensors wires is open, the ECU defaults to 176*F, so you'd notice no problem if the engine is already warmed up.
And if one of the sensors wires is open, the ECU defaults to 176*F, so you'd notice no problem if the engine is already warmed up.
#38
RotoriousRx7
Join Date: Oct 2005
Location: goodlettsville,tennessee 37072
Posts: 1,236
Likes: 0
Received 0 Likes
on
0 Posts
[QUOTE=
I like you, just want to drive my car without ANY wired little ticks. I could just ramp riht past the tick I am getting, but why. Spent too much time for that. Would you mind unplugging Thermo Temp Sensor and see what happens?
Chris[/QUOTE]
no doubt.. i just want it torun smooth at cruising speeds not pop and buck every now and then hesistate.
I like you, just want to drive my car without ANY wired little ticks. I could just ramp riht past the tick I am getting, but why. Spent too much time for that. Would you mind unplugging Thermo Temp Sensor and see what happens?
Chris[/QUOTE]
no doubt.. i just want it torun smooth at cruising speeds not pop and buck every now and then hesistate.
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
07-01-23 04:40 PM
CaptainKRM
2nd Generation Specific (1986-1992)
14
08-26-15 09:52 PM