92 Infiniti Q45 cuts off !!!! - Pirate4x4.Com : 4x4 and Off-Road Forum

bron86co · 02-06-2004, 06:54 PM

Ok my 92' infiniti runs anywhere from 30 second to a few minutes and shuts off. I checked and cleaned the battery cables positive and ground its still doing it. I'll check the cables further upstream in the morning but could it be anything else ??? The message center has said a few times "low battery voltage" when it cuts out but i busted out the voltmeter and the battery reads fine even when it shuts off Grrrrr

Any ideas. or has anybody else had this problem.

TRed · 02-06-2004, 08:12 PM

you should try to recieve the codes from the computer. It is probly in the manual, and will be a series of flashing lights. This will tell you what the computer thinks is wrong.

CP8071 · 02-06-2004, 08:30 PM

Check if the fuel pump is cutting off before or after the car stalls. I know a lot of early fuel injection systems will run the fuel pump for several reasons. If the key is to "Start" it will run the pump always, but in the "Run" position it will kill the fuel pump if the engine stalls (based on RPMs) or if the oil pressure is too low. Another possibility is that the engine is only running off the cold start injector and the main injectors are firing at all.

Get friendly with a multimeter, wiring schematic, and fuel pressure gauge. "noid" lights are available at most autostores.

CP

bron86co · 02-09-2004, 11:26 AM

ok guys here it is, it turns out i checked the air filter and i loosened the MAS sensor connector so it wasn't getting the signal from it. Also infiniti said the connection on the cam position sensor wasn't very good either both corroded. But its all good now. Ryan

AVS60/40SPLIT · 05-28-2004, 12:50 PM

Well Since I Work At An Ifiniti Dealer Whats Wrong Is The Fuel Pump And Fuel Pump Control Unit Most Dealers Will Stock Them . Control Unit Is About 485.00 And The Pump Is 310.00 I've Got Them In Stock Give Me A Call I'll Sell'm To You 1-800-671-5545

76Cruiser · 05-28-2004, 10:50 PM

Quote:

Originally Posted by AVS60/40SPLIT

Well Since I Work At An Ifiniti Dealer Whats Wrong Is The Fuel Pump And Fuel Pump Control Unit Most Dealers Will Stock Them . Control Unit Is About 485.00 And The Pump Is 310.00 I've Got Them In Stock Give Me A Call I'll Sell'm To You 1-800-671-5545

Nice try jackass.

88pathoffroad · 05-29-2004, 02:18 AM

What's with the capitalization of every word? :P

Another thing that can go wrong that will cause that is the ignition coil transformer going out. Although mine is an 88, I'm pretty sure later models could have the same thing happen to them.

02-06-2004, 06:54 PM	#1 (permalink)
bron86co Registered User Join Date: Dec 2003 Member # 25499 Location: Cumming, GA Posts: 981	92 Infiniti Q45 cuts off !!!! Ok my 92' infiniti runs anywhere from 30 second to a few minutes and shuts off. I checked and cleaned the battery cables positive and ground its still doing it. I'll check the cables further upstream in the morning but could it be anything else ??? The message center has said a few times "low battery voltage" when it cuts out but i busted out the voltmeter and the battery reads fine even when it shuts off Grrrrr Any ideas. or has anybody else had this problem.

02-06-2004, 08:12 PM	#2 (permalink)
TRed Registered User Join Date: Jun 2002 Member # 12100 Location: Priskitt AZ Posts: 1,168	you should try to recieve the codes from the computer. It is probly in the manual, and will be a series of flashing lights. This will tell you what the computer thinks is wrong. __________________ Quote: Originally Posted by randii if you're a Pickle, rolling down the trail in a Smurf, dispensing bowls of dicks. FWIW, I don't want to see pictures of that, either! Randii

02-09-2004, 11:26 AM	#4 (permalink)
bron86co Registered User Join Date: Dec 2003 Member # 25499 Location: Cumming, GA Posts: 981	Q ok guys here it is, it turns out i checked the air filter and i loosened the MAS sensor connector so it wasn't getting the signal from it. Also infiniti said the connection on the cam position sensor wasn't very good either both corroded. But its all good now. Ryan

05-29-2004, 02:18 AM	#7 (permalink)
88pathoffroad Registered User Join Date: May 2004 Member # 31059 Location: Salem, OR Posts: 17	What's with the capitalization of every word? :P Another thing that can go wrong that will cause that is the ignition coil transformer going out. Although mine is an 88, I'm pretty sure later models could have the same thing happen to them. __________________ 88 Pathfinder: 6+" of lift, 33x13.50 LTB's, L&P Stage 3 steering, Ranchos front/rear. Warn hubs, Powertrax rear locker, Smittybilt grilleguard, 110A alt/e-fan swap, dual batteries, PIAA's, custom TBI etc… NPORA Admin, mod for: Nissan-Infiniti, VGPowered, NissanHelp, AllNissans and NissanForums

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02-06-2004, 08:30 PM	#3 (permalink)
CP8071 Wheeler Join Date: Jun 2002 Member # 12491 Location: North Georgia Posts: 213	Check if the fuel pump is cutting off before or after the car stalls. I know a lot of early fuel injection systems will run the fuel pump for several reasons. If the key is to "Start" it will run the pump always, but in the "Run" position it will kill the fuel pump if the engine stalls (based on RPMs) or if the oil pressure is too low. Another possibility is that the engine is only running off the cold start injector and the main injectors are firing at all. Get friendly with a multimeter, wiring schematic, and fuel pressure gauge. "noid" lights are available at most autostores. CP

05-28-2004, 12:50 PM	#5 (permalink)
AVS60/40SPLIT Registered User Join Date: Apr 2004 Member # 30112 Location: NOT HIGH ENOUGH COLORADO Posts: 445	Well Since I Work At An Ifiniti Dealer Whats Wrong Is The Fuel Pump And Fuel Pump Control Unit Most Dealers Will Stock Them . Control Unit Is About 485.00 And The Pump Is 310.00 I've Got Them In Stock Give Me A Call I'll Sell'm To You 1-800-671-5545