my engine has a huge miss and would hardly start this morning out of no where?
Thread Starter
Member
Joined: Dec 2009
Posts: 143
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From: california
Car: 1991 pontiac firebird formula
Engine: 5.7L HSR, 58mm tb,24lb inj.,lt4 cam
Transmission: 700r4,3000 stall,stage 2 shift
Axle/Gears: 10bolt 3.23 ratio
my engine has a huge miss and would hardly start this morning out of no where?
when i went to start the car this morning it didnt want too and i had too keep crankin it over untill it did, and for some reason the IAC was screaming loud. It also has a huge miss when i push on the pedal and hesitates realy bad and i tried too unplug a plug wire from the distributer while it was running and some of them really diddnt change the idle much if at all? any ideas why this is happening? there is no check engine light.please help
Thread Starter
Member
Joined: Dec 2009
Posts: 143
Likes: 0
From: california
Car: 1991 pontiac firebird formula
Engine: 5.7L HSR, 58mm tb,24lb inj.,lt4 cam
Transmission: 700r4,3000 stall,stage 2 shift
Axle/Gears: 10bolt 3.23 ratio
Re: my engine has a huge miss and would hardly start this morning out of no where?
is there any reason that the IAC valve should be sucking air really really loud out of no where, and when i disconect the vacum line from the AFPR it stops sucking as much air but still wont run right and has no power at any rpms?
Thread Starter
Member
Joined: Dec 2009
Posts: 143
Likes: 0
From: california
Car: 1991 pontiac firebird formula
Engine: 5.7L HSR, 58mm tb,24lb inj.,lt4 cam
Transmission: 700r4,3000 stall,stage 2 shift
Axle/Gears: 10bolt 3.23 ratio
Re: my engine has a huge miss and would hardly start this morning out of no where?
for some reason when i did the water on the header trick too see if a cylinder was not working properly and the whole passenger side header was only warm too the touch and the driver side was sizzling hot when i sprayed it with the water, any reason this could be? i took out one of the spark plugs and started the vehical too see if it was sparking and it did so im not sure what it could be but it happened just sitting in the garage over night and the IAC is pullin a huge amount of air and is realy loud and never shuts off even after the engine warms up, any ideas??
Thread Starter
Member
Joined: Dec 2009
Posts: 143
Likes: 0
From: california
Car: 1991 pontiac firebird formula
Engine: 5.7L HSR, 58mm tb,24lb inj.,lt4 cam
Transmission: 700r4,3000 stall,stage 2 shift
Axle/Gears: 10bolt 3.23 ratio
Re: my engine has a huge miss and would hardly start this morning out of no where?
can it be the holley afpr that came with the stealth ram and just happen over night? i forgot to mention i did check the fuel pressure and it was good so im not sure where too lok next?
Thread Starter
Member
Joined: Dec 2009
Posts: 143
Likes: 0
From: california
Car: 1991 pontiac firebird formula
Engine: 5.7L HSR, 58mm tb,24lb inj.,lt4 cam
Transmission: 700r4,3000 stall,stage 2 shift
Axle/Gears: 10bolt 3.23 ratio
Re: my engine has a huge miss and would hardly start this morning out of no where?
any ideas?
Thread Starter
Member
Joined: Dec 2009
Posts: 143
Likes: 0
From: california
Car: 1991 pontiac firebird formula
Engine: 5.7L HSR, 58mm tb,24lb inj.,lt4 cam
Transmission: 700r4,3000 stall,stage 2 shift
Axle/Gears: 10bolt 3.23 ratio
Re: my engine has a huge miss and would hardly start this morning out of no where?
is it ok too take the wire off each inlector while the car is running too see if the idle change? Please guys i need help asap, im not even able too drive too work so i had too call in. any help would be greatly appreciated
Re: my engine has a huge miss and would hardly start this morning out of no where?
Check the injectors on the cold side, IDK is batch fired. Check the fuses; I think if one injector is shorted out it could shut down the whole bank on that side. Was the plug that you pulled fowled? OHM the injectors and try a noid light to see if you are getting pulse to all of them. Hope someone else joins in with a little more knowledge then me, Maybe doc's around.Hope you fix it, good luck
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Thread Starter
Member
Joined: Dec 2009
Posts: 143
Likes: 0
From: california
Car: 1991 pontiac firebird formula
Engine: 5.7L HSR, 58mm tb,24lb inj.,lt4 cam
Transmission: 700r4,3000 stall,stage 2 shift
Axle/Gears: 10bolt 3.23 ratio
Re: my engine has a huge miss and would hardly start this morning out of no where?
ty very much for the info u saved my life right now, i went out and checked too see if someone had messed with the fuses and there was one missing where it says injector 2 so as soon as i replaced it all the cylinders started too fire.
Re: my engine has a huge miss and would hardly start this morning out of no where?
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