weird power loss

gapboi210 · 09-20-2009, 03:01 PM

Max was driving great and I went to pass someone. I hit 85mph and was at about 4100 rpm all of a sudden when it started hesitating real bad. Doesn't feel like a single cylinder miss. Kept driving and it smoothed out. Then after it sat for about 30 min I drove it and it was missing like crazy for about a minute then cleared up with just an occasional hiccup. So far it seems that it gets bad after sitting then sorta clears up. What could of triggered this just from passing someone. I check MAF and FI connections and they didn't make any difference

*CapedCadaver* · 09-20-2009, 03:38 PM

Quote:

Originally Posted by gapboi210

Max was driving great and I went to pass someone. I hit 85mph and was at about 4100 rpm all of a sudden when it started hesitating real bad. Doesn't feel like a single cylinder miss. Kept driving and it smoothed out. Then after it sat for about 30 min I drove it and it was missing like crazy for about a minute then cleared up with just an occasional hiccup. So far it seems that it gets bad after sitting then sorta clears up. What could of triggered this just from passing someone. I check MAF and FI connections and they didn't make any difference

cracked disty cap? loose plug wires? faulty TPS hard-idle switch?

gapboi210 · 09-20-2009, 06:59 PM

just went out there and she started up and purred without any hiccups

gapboi210 · 09-20-2009, 07:29 PM

can't think what would cause that miss just because of the engine being under a higher load

*CapedCadaver* · 09-20-2009, 08:01 PM

Quote:

Originally Posted by CapedCadaver

cracked disty cap? loose plug wires? faulty TPS hard-idle switch?

Quote:

Originally Posted by gapboi210

can't think what would cause that miss just because of the engine being under a higher load

did you check those items yet? my car kept hiccuping and it turned out to be a bad TPS hardswitch. reason being, it never gave me problems at idle (when the switch was supposed to have a closed circuit) but would give me problems any time i was off-idle.

gapboi210 · 09-20-2009, 08:10 PM

Distributor cap looks ok. Problem when it happens does it both at idle and when driving.

1992maximase30 · 09-20-2009, 08:13 PM

what about the rotor and the screw inside the rotor.
that seems to be a common issue with the vg.

gapboi210 · 09-20-2009, 08:25 PM

whats the common issue? It coming loose?

1992maximase30 · 09-21-2009, 04:48 PM

yea i think someone here had the tip of the screw break leaving the other half in the cam. so it would run like how your decribing or would start at all.

gapboi210 · 09-23-2009, 09:34 PM

odd I went to go look at the cap and rotor. I noticed there was what looked like dirty water spots everywhere. Looks like the engine was getting wet everywhere. I checked and haven't lost any coolant.......odd

*ColombianMax* · 09-23-2009, 11:46 PM

I had the screw holding my rotor in place come loose and the car wouldn't start. This was like 2 years ago though..

gapboi210 · 09-23-2009, 11:48 PM

cap and rotor was tight

*CapedCadaver* · 09-24-2009, 12:00 AM

look at the connector ends of the spark plug wires. Do any of them look pinched in? if so you can use a flathead screwdriver to expand them out so they make good full conact with the disty, receptacles and the one to the coil as well.

gapboi210 · 09-24-2009, 12:41 AM

connections all look good. Puzzled about the weird water spots caked with dirt all over..and hasn't missed since that day

1992maximase30 · 09-24-2009, 07:26 PM

moisture...i assume.

KaneStyles · 10-02-2009, 07:24 AM

I got a problem with my maxima.... Rmps at idle is at 700 once i put it in drive it drops o 600 rmps... and when i press the window buttons to send down the 2 front windows the rmp's drop to 500 and engine feels like crap.... can someone help me with this problem? thank you

*CapedCadaver* · 10-02-2009, 07:33 AM

Quote:

Originally Posted by KaneStyles

I got a problem with my maxima.... Rmps at idle is at 700 once i put it in drive it drops o 600 rmps... and when i press the window buttons to send down the 2 front windows the rmp's drop to 500 and engine feels like crap.... can someone help me with this problem? thank you

try cleaning your iacv. if it's not able to properly adjust the airflow to compensate for extra loads (putting car in gear, turning the wheel, electrical loads, a/c) that would cause the RPM to drop the more stuff you use.

Swampass · 10-02-2009, 01:15 PM

I agree with the throttle position sensor idea. That SOB can wreak havoc on your idle, shifting issues for the transmission, and most likely a cause for erectile dysfunction.

It can be adjusted. A little turn can make a BIG difference. Turn, drive, turn, drive, etc. till if feels right.

KaneStyles · 10-03-2009, 08:28 PM

will most def take out my throttle body clean it up and see if its dirty it makes perfect sense. frist time running this engine sense it came from teh junk yard and drove 300 miles on it so far. and dont worry i change the oil, spark plugs, wires new disturbutor cap, and fuel filter. and thermostat too and all the belts. also did a proflush. added lucas heavy oil stabilzer. and drained it after 75 miles cause it didnt do any thing. then another oil change with engine restore AMAZING!!!. and now after 300 miles on it im gonna do a Dura Lube additive in the engine cause pops said so eh. lol cant question the old g's in mechaincs lol

gapboi210 · 10-04-2009, 02:17 PM

i guess i should go ahead and try cleaning the intake and maybe seafoam it too while I am at it.

KaneStyles · 10-05-2009, 06:00 PM

where do you find seafoam to buy?

gapboi210 · 10-05-2009, 09:05 PM

local autoparts have it, Autozone, Oreilly, PepBoys, Advance

KaneStyles · 10-07-2009, 03:55 PM

so i cleand the ivac and then the throttle body and advance the timing a little by turning the distubutor. the car when starts up cold idles at 1300rmps then goes down to 1000 rpms and once it warms up to 900rpms... i turned on the heat full blast the head lights and step on the brake and put it into drive and it idles at 500 and feels like its about to stall.... can somone help with this problem..

1992maximase30 · 10-07-2009, 09:09 PM

DO NOT USE DURA LUBE!!! stick with the engine restore. leave it in there for the full 3000 miles. that stuff worked miracles when i had my honda and acura.
if you have the gxe model you can adjust the idle on the ecu and the iacv itself.
my maxima idle's at 400rpms...thats with out anything on. dont feel any vibrations, or does'nt feel like she's about to stall either.

gapboi210 · 10-21-2009, 09:14 PM

hmmm started doing it again. Seems like it does it more in reverse. Maybe it's just more noticble.

jona571 · 10-23-2009, 05:40 PM

I have a 93 max SE with 200,000 should I use the seafoam,,just looking for more power

gapboi210 · 10-24-2009, 12:57 AM

don't thread jack

KaneStyles · 11-12-2009, 08:00 PM

How do i adjust the idle by using the ecu cause when its at 500 rmps it feels rough and feels like it going to break down. this is a big problem....

*CapedCadaver* · 11-12-2009, 08:07 PM

Quote:

Originally Posted by KaneStyles

How do i adjust the idle by using the ecu cause when its at 500 rmps it feels rough and feels like it going to break down. this is a big problem....

gradually loosen the idle adjust screw on the iacv (underneath a black rubber cap... well assuming you have a VG) until your idle is satisfactory. there's a more complicated way to do it but try that first.