3800 Hesitation
06-08-2004, 01:13 AM
#1
Senior Member
Thread Starter
Join Date: Oct 2001
Location: Peoria, AZ
Posts: 10,906
Gmon and I have been trying to fix this for the last 6+ hours.
At or real close to 3800rpms the car just hits a brick wall, feels just like an n/a when the secondaries are unplugged. This happens regardless of pressure, low vacuum or boost.
What we have done:
Direct power to the secondaries and they spray and do not leak. They were cleaned previously; the injectors are not the problem
Checked that the injectors have power when the car is the "on" position
Checked for contiunity on the signal wires for the injectors; check injector cap pins to make sure they are touching, injectors caps are new also. injector wiring is not the problem.
We swapped afms, ecu, pressure sensors, put in a "pill", hooked it up to a direct source.
Added two large grounds to the block. All other grounds are hookedup.
We are stumped as to why this thing hesitates so hard. It will not go past 4k at wot/part throttle. It acts like there is no fuel, like its so lean it just won't go anywhere. I do not know for a fact that the injectors aren't opening.
The car is also running like *** right now for some reason, but thats another post.
At or real close to 3800rpms the car just hits a brick wall, feels just like an n/a when the secondaries are unplugged. This happens regardless of pressure, low vacuum or boost.
What we have done:
Direct power to the secondaries and they spray and do not leak. They were cleaned previously; the injectors are not the problem
Checked that the injectors have power when the car is the "on" position
Checked for contiunity on the signal wires for the injectors; check injector cap pins to make sure they are touching, injectors caps are new also. injector wiring is not the problem.
We swapped afms, ecu, pressure sensors, put in a "pill", hooked it up to a direct source.
Added two large grounds to the block. All other grounds are hookedup.
We are stumped as to why this thing hesitates so hard. It will not go past 4k at wot/part throttle. It acts like there is no fuel, like its so lean it just won't go anywhere. I do not know for a fact that the injectors aren't opening.
The car is also running like *** right now for some reason, but thats another post.
06-08-2004, 02:01 AM
#3
Senior Member
Join Date: Jul 2003
Location: MN
Posts: 392
ill come down and help this week sometime when I get off work, being that I have the same problem. Id be interested in seeing what happens when my haltech goes in, if it stops, maybe its a natural reaction for the stock ecu to go into limp mode under certain conditions with certain mods done to the car. Maybe its a fuel pressure problem???
06-09-2004, 10:25 AM
#8
Senior Member
Join Date: Jul 2003
Location: MN
Posts: 392
well that gives me some ideas. I tried plugging the solenoid into fpr connector, but didnt clear codes. I'm also going to block off the omp and go premix, then we'll see what happens. El you should just sell that thing. What was the offer you got? 6k?