Couple of questions
#1
Couple of questions
I have an 88 Firebird Formula with a mild cam (don't know specs), Hypertech chip, 350 TBI off a caprice cop car, TBI spacer,headers and Flowmaster cat back. problem it it was idling very fast and there was no fast idle adjustment on the Throttle body . It was also running very rich so I retarded the timing and it started running very rough and no matter how I adjusted the timing nothing worked. So I checked the plugs and they were black.
i am figuringthe 350 TBI is too big. So I am going to put a stock 305 Throttle body back on it and new plugs and see how it runs.
my question is could the Chip be making it run too rich and most importantly will any TBI unit from any 305 work?
the engine code for my car is "E" if that has any significance.
i am figuringthe 350 TBI is too big. So I am going to put a stock 305 Throttle body back on it and new plugs and see how it runs.
my question is could the Chip be making it run too rich and most importantly will any TBI unit from any 305 work?
the engine code for my car is "E" if that has any significance.
#2
Member
Join Date: Sep 2010
Location: NE Ohio
Posts: 113
Likes: 0
Received 0 Likes
on
0 Posts
Car: 84 z28
Engine: 305 for now, lil more then stock
Transmission: 700r4 for now
Re: Couple of questions
Could just be sensors or a bad tune on chip o2 iac tpi all would cause that
#3
Supreme Member
iTrader: (25)
Join Date: Feb 2006
Location: Manteca,California. Nor Cal.
Posts: 7,260
Likes: 0
Received 5 Likes
on
5 Posts
Car: SOLD IT. Mopar guy only now.
Engine: gone
Transmission: gone
Axle/Gears: gone
Re: Couple of questions
throttle position sensor, coolant temp sensor, bad oxygen sensor. vacuum leak. bad injectors. and more...
#5
TGO Supporter
iTrader: (1)
Re: Couple of questions
I would rule out vac leaks first. check all hose for cracks etc. also was the correct TBI base gasket used?
IAC should be closing thern opening when key on engine off. On a warm coolant it should be nearly closed like 95% so with engine running. Do a visual on thatlooking into TB bore at IAC inlet.
IAC should be closing thern opening when key on engine off. On a warm coolant it should be nearly closed like 95% so with engine running. Do a visual on thatlooking into TB bore at IAC inlet.
Trending Topics
Thread
Thread Starter
Forum
Replies
Last Post