O.T. ? about my daily driver... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Chevyc10! · 03-24-2002, 11:55 AM

I got a 97 Nissan pickup, 2.4 cyl. P.O.S. but it gets me to work and back. Its got problems. At idle the rpms go from around 1100 to 1500 randomly, just kind of cycles from one to the other. Doesn't go up and down at quick intervals, every 10 seconds or so. The thing has MPFI. I am also getting an engine code of P0303. #3 cylinder misfire. I have changed the rotor, cap, wires and plugs. Still get the code, though. I am also aware of the timing chain guides are wore. Any suggestions as to what part in the fuel system or sensors that could be bad?

------------------
68 SWB
The Surgeon General doesn't say anything about smoking a Ford!!!
Would rather be ran over repeatedly by a Chevy than drive a Ford!!!

Paralyzed from the neck up and confined to a hat!

*Fast68Chevy* · 03-24-2002, 01:16 PM

could just be a vacuum leak, IE hose off or cracked, or could be sometihng bigge rlike O2 sensor or throttle posion sensor or MAP(manifold absolute pressure) sensor, etc etc

1100-1500 is high idle rpm !

------------------
-71/C-10(thx teeitup and crews!)350 4+4/CH465(thx 71Chev, GMCPaul, and CPNE)longfleet bed(thnx meathead95)!still building it-
-'84 Z28(Z28) 1G1AP87GXEL100000 with H.O. 305/4bbl/190net/hp(L69) 3.73 rear(GT4/YC4) 700R4(MD8-MXO) & other goodies

-79 G20 pass van, 350/th350/10bolt,
paint is overrated
Randy- Lincoln, IL

r68c30@hotmail.com
© RSS Enterprises 2000

[This message has been edited by Fast68Chevy (edited March 24, 2002).]

Chevyc10! · 03-24-2002, 05:11 PM

Its running pretty rough too... You'd think that the diagnostic tester would read a bad sensor though. Just reading the misfire code. I really dislike this computer control crap!

------------------
68 SWB
The Surgeon General doesn't say anything about smoking a Ford!!!
Would rather be ran over repeatedly by a Chevy than drive a Ford!!!

Paralyzed from the neck up and confined to a hat!

PanelDeland · 03-24-2002, 08:39 PM

Might check to see if the injector is clogged.It seems like that would cause it to misfire but not show as a different code.

------------------
Deland does Chevys 68Chevy panel(LIZ)
"A man and his truck,it's a beautiful thing"
"I have the body of a god,unfortunately it's Budda"

03-24-2002, 08:55 PM

are you useing a code reader or a scan tool?
code reader only gives you codes
scan tool also gives you serial data so you could see what the o2 sensors are doing.
i would think you cleared the code when r
repair was done.
if you still have code and runing bad,i
would check injector pluse on no3 cly.
maybe plugged.
good luck

------------------
72BLUE C10 SWB
86BLUE K10 LWB
87RED S10 SWB
89RED S10 SWB

03-24-2002, 11:55 AM	#1
Chevyc10! Registered User Join Date: Dec 2000 Location: Centerville Ga. USA Posts: 804	O.T. ? about my daily driver... I got a 97 Nissan pickup, 2.4 cyl. P.O.S. but it gets me to work and back. Its got problems. At idle the rpms go from around 1100 to 1500 randomly, just kind of cycles from one to the other. Doesn't go up and down at quick intervals, every 10 seconds or so. The thing has MPFI. I am also getting an engine code of P0303. #3 cylinder misfire. I have changed the rotor, cap, wires and plugs. Still get the code, though. I am also aware of the timing chain guides are wore. Any suggestions as to what part in the fuel system or sensors that could be bad? ------------------ 68 SWB The Surgeon General doesn't say anything about smoking a Ford!!! Would rather be ran over repeatedly by a Chevy than drive a Ford!!! Paralyzed from the neck up and confined to a hat! __________________ 68 SWB The Surgeon General doesn't say anything about smoking a Ford!!! Would rather be ran over repeatedly by a Chevy than drive a Ford!!! Paralyzed from the neck up and confined to a hat! Kathleen, Georgia USA

03-24-2002, 08:39 PM	#4
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,993	Might check to see if the injector is clogged.It seems like that would cause it to misfire but not show as a different code. ------------------ Deland does Chevys 68Chevy panel(LIZ) "A man and his truck,it's a beautiful thing" "I have the body of a god,unfortunately it's Budda" __________________ The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil"

03-24-2002, 01:16 PM	#2
Fast68Chevy Account Suspended Join Date: May 2000 Location: IL Posts: 0	could just be a vacuum leak, IE hose off or cracked, or could be sometihng bigge rlike O2 sensor or throttle posion sensor or MAP(manifold absolute pressure) sensor, etc etc 1100-1500 is high idle rpm ! ------------------ -71/C-10(thx teeitup and crews!)350 4+4/CH465(thx 71Chev, GMCPaul, and CPNE)longfleet bed(thnx meathead95)!still building it- -'84 Z28(Z28) 1G1AP87GXEL100000 with H.O. 305/4bbl/190net/hp(L69) 3.73 rear(GT4/YC4) 700R4(MD8-MXO) & other goodies -79 G20 pass van, 350/th350/10bolt, paint is overrated Randy- Lincoln, IL r68c30@hotmail.com © RSS Enterprises 2000 [This message has been edited by Fast68Chevy (edited March 24, 2002).]

03-24-2002, 05:11 PM	#3
Chevyc10! Registered User Join Date: Dec 2000 Location: Centerville Ga. USA Posts: 804	Its running pretty rough too... You'd think that the diagnostic tester would read a bad sensor though. Just reading the misfire code. I really dislike this computer control crap! ------------------ 68 SWB The Surgeon General doesn't say anything about smoking a Ford!!! Would rather be ran over repeatedly by a Chevy than drive a Ford!!! Paralyzed from the neck up and confined to a hat! __________________ 68 SWB The Surgeon General doesn't say anything about smoking a Ford!!! Would rather be ran over repeatedly by a Chevy than drive a Ford!!! Paralyzed from the neck up and confined to a hat! Kathleen, Georgia USA

03-24-2002, 08:55 PM	#5
L&L BLUE 72 Guest Posts: n/a	are you useing a code reader or a scan tool? code reader only gives you codes scan tool also gives you serial data so you could see what the o2 sensors are doing. i would think you cleared the code when r repair was done. if you still have code and runing bad,i would check injector pluse on no3 cly. maybe plugged. good luck ------------------ 72BLUE C10 SWB 86BLUE K10 LWB 87RED S10 SWB 89RED S10 SWB



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.