3800 Hesitation, car rev's fine w/o load.
06-30-07, 02:05 PM
#26
Senior Member
I agree I tested the TPS today it is workin perfectly . Somthing I noticed today also if I apply a certain amount of pressure to the gas pedal not very much it will come out of the hesitation . I am kinda curious if I blew out my FPR when I had that walbro pump and way to big injectors . Is that a possibility ?
P.S Can anyone tell me where I can find new 5th/6th port air pump actuators ? I would like to replace them .
P.S Can anyone tell me where I can find new 5th/6th port air pump actuators ? I would like to replace them .
08-14-07, 06:35 AM
#27
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Join Date: Aug 2005
Location: Oakdale , Minnesota
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I seem to be having this problem still. been doing my homework on here and adjusting it to the car (S4 TII) still no luck.
1.) Grounds seemed like a major issue w/ this prob so I cleaned off most of the grounds and sandblasted the bolts back to shiny.
(Chassis Shock tower , upper bolt on Tranny / engine (under oil filter) , bolt on engine under UIM , ECU Grounds re-grounded 3G, 3A, 2R, 2C, & few misc others that i could find)
2.) Ran a vacuum test to check the exhaust under reving (w/o load) Checked out marginal. So i drilled a small hole into my exhaust pipe to see if it would help out. Still didn't run any better. Now its somewhat loud @ idle , still sounds okay cruising.
3.) TPS is brand new from Mazda , fixed a few idle issues after calibrating. 1st Plus so far , but not what i wanted to fix.
4.) Boost sensor re-grounding tried that. Blew EGI fuse, read on a few posts "86 Only, do not re-wire new models" 3bucks and 40mins of my time lost there.
Reading more posts online , but most of them covered what I have already tried.
Any more ideas from others , much appreciated. Prob end up saving up to get exhaust (downpipe / Cat) since its still stock and theres a hole in it now. See how that goes afterwards.
Again, any ideas / knowledge to spare on this issue much appreciated. /scratching my head too much now
LD
1.) Grounds seemed like a major issue w/ this prob so I cleaned off most of the grounds and sandblasted the bolts back to shiny.
(Chassis Shock tower , upper bolt on Tranny / engine (under oil filter) , bolt on engine under UIM , ECU Grounds re-grounded 3G, 3A, 2R, 2C, & few misc others that i could find)
2.) Ran a vacuum test to check the exhaust under reving (w/o load) Checked out marginal. So i drilled a small hole into my exhaust pipe to see if it would help out. Still didn't run any better. Now its somewhat loud @ idle , still sounds okay cruising.
3.) TPS is brand new from Mazda , fixed a few idle issues after calibrating. 1st Plus so far , but not what i wanted to fix.
4.) Boost sensor re-grounding tried that. Blew EGI fuse, read on a few posts "86 Only, do not re-wire new models" 3bucks and 40mins of my time lost there.
Reading more posts online , but most of them covered what I have already tried.
Any more ideas from others , much appreciated. Prob end up saving up to get exhaust (downpipe / Cat) since its still stock and theres a hole in it now. See how that goes afterwards.
Again, any ideas / knowledge to spare on this issue much appreciated. /scratching my head too much now
LD
08-14-07, 07:56 AM
#28
Rather than blast the bolts it's far better to replace them with stainless and cover the connection with grease for a long lasting fix.
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