A couple rips in a row.
Maybe this thing is getting hot and not working as designed? IDK. It's an original part.
Progress Thread 12th Owner: My '93 Notchback Restoration & Performance Build
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Maybe this thing is getting hot and not working as designed? IDK. It's an original part.
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I was referring to engine temp, higher under hood temps could effect the relay/ wires, clean the contacts and install a new relay, the don't cost much.
I bought the fuel pump relay and will install it Friday. In the meantime my tuner advised me that my plugs are gapped to wide. They're at .55 and should be around .35-.38. Ill pull those and close the gap.
It's a good car, but old in car years. I think it just has COVID. Hopefully it will pull through in time.
Are you n/a? Sorry I forget crap, can't find your file in my head and I ain't going back through this thread.
- Jul 7, 2005
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You only need to that same when you are adding a power adder to the car. The stock gap is .45, which most open to .50
Pulled the plugs and reset them down to. 35 gap. Cold weather starting is a bit easier. Test drove the car. Same sensation. I could swear that the O2 sensors are bad because that is the bucking and hesitation sensation, but they're newer.
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So why after we give you advice about plug gap you change it anyway?
That plug gapped at 035 would be for a points ignition or makeup for weak spark. JMO
That plug gapped at 035 would be for a points ignition or makeup for weak spark. JMO
I don't believe anyone suggested I keep the plugs at .55 and I have had rough cold startups at that gap. .35 - .40 is an easier start without the car gasping at first.
Threw another $80 at my car by installing brand new O2 sensors. Drove the car today and received the same fault code: "41 -Heated Oxygen Sensor (HEGO) sensor voltage low / system lean". Later, my check engine light came on and I ran codes again and received: "91 - sensor voltage low / system lean". The car acts in a manner consistent with dirty O2 sensors. What could cause bucking and hesitation especially while the car is hot if the O2 sensors are otherwise good?
Have you checked the wiring coming from the sensors? Just a thought
I've been reading and rereading this post from 2009. Lot of good info here, but I'm not sure if it applies.
Yeah...... If the sensors are new, and it’s still throwing codes, maybe part of the harness is damaged.
Mustang TPS Adjustment - 0.999999v not necessary
EDIT: This post applies to 86-93 5.0 Mustangs. Seems to be a common myth, so lets sticky a thread explaining how the TPS works. Jrichker has provided the basic TPS guideline to follow. I'll just preference it with this. Adjusting your TPS to .99999999 volts is not necessary at all. There...
www.stangnet.com
Just checked the wiring. Pretty old and crusty, but all the wires appear undamaged as no metal is visible.
No, I definitely will. I'm just not skilled in TPS language and need to read up on it.
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