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Dies when i give it gas
#12
(05-10-2019, 11:06 PM)bairan Wrote: ok, fuel pump test...1. keyon  42psi(only leak down to 35psi after 4 mins)
                               2. idle   33-35 psi. only thing i did notice was when i gave it gas the pressure would go up to about 42 psi then back down to 33psi at idle

i did put a leaf blower on the MAF and got it to put out about 3.8v. i also put a calibrator on the MAF input wire going back to the ECU and started out at 2v at idle. as i increased the voltage the idle started getting rough(as i assume the ECU was receiving that signal and adjusting the EFI). i had to give it gas to keep it running as i increase the voltage to the input. it would still try to bog down until i got above 4.8v then it seem to run better. i know that i could not vary the signal like i would be if it was coming from an MAF. so maybe MAF is no good. just odd that i had to get it to almost 5v before it would run right. does the MAF vary from 2v at idle to 5v at wot? i would have thought with a leaf blower i could have gotten the MAF to max out at 5v. so maybe it bad.

wow  a new forum , nicer.
ok the engine lacks power,  unless in limphome mode, nice progress, there ok.?
1: not fuel pressure bad.  nor FPR. bad
2: the maf is for sure good.
3: the maf tests also show that the maf must be way too high for your power,  so the injectors are clogged did you ever have bad fuel in it or park it for years?>
5v or near is like hooking the maf to a 2.0 to 2.5liter engine, know that your maf is not just limited to 1.6Liters. displacement (suck factors)
no, the maf only does 1.6Liters of suck, (flow) how much is that? well 4vdc. max flow 55gm./min.
http://www.fixkick.com/sensors/92-95MAF/EXCEL-ECHO1.jpg
I built this chart map from driving my car, 1996. using wonderful OBD2 scans.

I now say this.
clogged injectors<<<< seems we are here, but what is the history on this car? try Chevron injector cleaner (bottle poured in the tank (its benzine strong)


compression low( i cant feel your power in limphome if is very powerful engine in LIMP then I'd say its ok)
is vacuum ok at idle 19iinchs HG. (cat clogged it will not be.) but if powerful engine in limp , no bad cat possible. clogged.
last is spark  IDK , if spark is good , i cant hear or feel the engine, to know this but bad spark is violent and timing way off is huge power loss. all the time.





this maF IS THE HOT WIRE MAF RIGHT?  (NO CONE SLIDING SILLY AIR FLOW AFM AS SEEN IN EUROPE)


YOUR ONE TEST THERE WITH YOU VERY WISE CHOICE MAKING YOUR OWN MAF , DC VOLTAGE INPUT SIMULATOR TELLS ALL WE NEED.
I Too have done that , in school it is taught. this.
it also cancels LIMPHOME doing that (UNTIL near 5vdc the shows DTC maf stuck too high, and now is REAL ECU injections normal.

you proved you must  use illegal MAF voltage to get power.
injectors are clogged. up. seems to me.....

send them to witchhunter.com,  you get them back with before and after flow readings, and cleaned.

https://www.witchhunter.com/

btw good luck to you!!!
http://www.fixkick.com
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Messages In This Thread
Dies when i give it gas - by bairan - 05-06-2019, 08:51 AM
RE: Dies when i give it gas - by fixkick - 05-06-2019, 10:49 AM
RE: Dies when i give it gas - by fixkick - 05-07-2019, 01:52 AM
RE: Dies when i give it gas - by bairan - 05-07-2019, 11:40 PM
RE: Dies when i give it gas - by fixkick - 05-08-2019, 02:34 AM
RE: Dies when i give it gas - by fixkick - 05-08-2019, 02:35 AM
RE: Dies when i give it gas - by fixkick - 05-08-2019, 02:46 AM
RE: Dies when i give it gas - by bairan - 05-08-2019, 11:20 PM
RE: Dies when i give it gas - by fixkick - 05-10-2019, 01:57 AM
RE: Dies when i give it gas - by fixkick - 05-10-2019, 02:00 AM
RE: Dies when i give it gas - by bairan - 05-10-2019, 11:06 PM
RE: Dies when i give it gas - by fixkick - 05-11-2019, 06:42 AM
RE: Dies when i give it gas - by fixkick - 05-11-2019, 07:58 AM
RE: Dies when i give it gas - by bairan - 05-15-2019, 12:12 AM
RE: Dies when i give it gas - by fixkick - 05-15-2019, 01:49 AM
RE: Dies when i give it gas - by fixkick - 05-15-2019, 04:05 AM
RE: Dies when i give it gas - by fixkick - 05-15-2019, 04:14 AM
RE: Dies when i give it gas - by bairan - 05-15-2019, 10:55 PM
RE: Dies when i give it gas - by fixkick - 05-17-2019, 03:03 AM

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