sallyman1

I have the slim quadzilla rail pressure gauge. first one died after a month. second one worked fine till lately. I dont know if its gauge or not but instead of giving the usual reading of 7-9 psi (stock lift pump), it starts showing 0-2 PSI. Sometimes im driving slow and it says 0. This cant be possible is it? or is the gauge hooped. i find very erratic readings.

goose2w1

Sounds like a bad sending unit. Does the RP portion work fine? I have read about alot of folks having issues with the sender. I gave up on mine along time ago

justin allan

same thing with my gauge Line preasure is all over from o to 17 while driving slow. but when I get on it it holds a constant 20. I agree it is anoying

82NDSNPR

i had the same issue the rp side would read zero i called quad they told me that the little black unit gets hot and when it does it frys and will only read zero so i had to trade mine back in for a new one and waiting to see if i have more problems with it

sallyman1

what black unit? my quad gauge is grey. my rail pressure side works good just not my Lift pump pressure side.

mopardamo

Hello,

I have the same issue. The RP works fine but the LP begun reading zero and bouncing around about 2 weeks ago.

Damon

rip 112

Mine died after a month. I am not very happy.

WUnderwood

seems like I read that a lot of them go bad....

OutOfSight

Mine never even worked (FP part), even after trying several of the things their tech guys told me to, they said I could send it back for another one. I bought a real FP guage instead.

AlCorr

I'm having the same problem with my Quadzilla Commander fuel pressure gauge. Very erratic readings, keeps jumping all over the place. I started calling Quadzilla in February for a new one. Every time I call they are working on it call back in two weeks, call back next month. I have only one thing to say: "Excellent Customer Support".

mpracehemi

So the one I just bought from a member off the classified is junk?? I shouldn't even bother installing it??

rip 112

Not necessarily. Alot of ppl haven't had problems. But the chance is always there.

AlCorr

Would you like to buy mine?

sallyman1

is there a substitute # we can get from napa to replace the quad 1? the LP sending unit canister that is?

justin allan

It looks like a oil preasure sending unit off of a late 70's gas motor. I have an idenical on on my 79 ford 429 motor for the oil preasure. THat may work??