I dont Know what is the matter!!!!

Started by kirch, March 20, 2003, 10:26:32 AM

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kirch

When i accelerate, i dont even have to accelerate hard and my engine begins to bog out....If  you have any clue let me know...
KIRCH

1trucavalier

to much fuel!  either your 02 sensor is bad, or your injectors are leaking or your crossover is bad
hi-flow intake, straight pipe, dsm bov, 24lb inj,  polished upper intake, turbo, and frt valve cover.

florida_tgp

Hopefully it acts up when sitting in driveway under load,
If so i would suggest a timing light to each of the plug wires
and looking for missing flashes. I had a coil go bad, first it was
just under boost then bad enought to give rough idle, and
that is how i found it. another suggestion, disoconnect O2
sensor, then pull fuse by fuel pump relay for 1 minute,
see if how car runs, that is open loop mode, if car still
runs bad, its something basic, spark, fuel, throttle position
sensor.
white Turbo STE

idbeast

Actually it sounds like a plugged cat converter :wink:  :drinking:
Jim W     AKA  Idbeast
04 Supercharged Nissan Frontier Crew Cab 4X4 in sandstone (Light Gold)!!!
Red 89 TGP (14.95 1/4 mile) Not any more...... coming with surprises in the very near future, Black 90 TGP (14.41 1/4 mile), White 90 Turbo STE (15.06 1/4 mile), and now my 2nd White 90 Turbo STE 89 Dodge Shadow ES Turbo

kirch

I dont have a cat..lol....cut it off. :)
KIRCH

1trucavalier

do you have a new or jeff m's crossover?
hi-flow intake, straight pipe, dsm bov, 24lb inj,  polished upper intake, turbo, and frt valve cover.

kirch

I havent been able to get a new over pipe yet......Do you think that, that would take care of the problem :?:
KIRCH

florida_tgp

the bad effect of the crossover pipe are not that severe.

does the engine run to 3,000 rpm with car in neutral?
if so, i would doubt a clocked cat is problem, but to be sure,
pull loose one of the vaume lines, one of the ones out of
throttle body, nearest front bumper, that goes under
intake manifold. plug guage into hole
at throttle body, start engine and run rpm up, if vacume goes
to near 0 when engine is steayd at 2500, then clogged cat.
white Turbo STE

1trucavalier

if your cross was leaking bad then you would not get that max air pushing the turbo therefore not enough air going into the tb.  If you are not getting the correct air in the tb, + incorrect 02,  and almost wide open tp wouldn't it bog when you try to punch it having too much gas and not enough air???
hi-flow intake, straight pipe, dsm bov, 24lb inj,  polished upper intake, turbo, and frt valve cover.

4PASNU

I'm having a similar problem right now with my car that I haven't figured out yet.  When I floor it the car bogs BAD.  It won't go anywhere if its floored.  If I keep the RPM's below 3000 it's just fine.  When I'm in Park and I rev the engine up past 3500 it bounces around on me from 4000 to 3000 RPM.   :evil: Any ideas on this?  Should I be checking the same things as mentioned above?  O2, Crossover, Coils???  Anyone out there had this same problem?
Mike Ruckhaber
Currently own a 1990 Black TGP Stock.
Previous owner of a 1989 TGP: FFP Dogbones, K&N, KVR rotors/pads. Exhaust: 3" hi-flo cat, Dynomax 2.5" Ultra Flo mufflers. 
2000 GTP

skalor

Quote from: 4PASNUWhen I'm in Park and I rev the engine up past 3500 it bounces around on me from 4000 to 3000 RPM.   :evil: Any ideas on this?  Should I be checking the same things as mentioned above?  O2, Crossover, Coils???  Anyone out there had this same problem?

There is a parl/neutral rev limiter on this car so that is why it does that in park :wink:
'90 Lumina <-- Turbo 3.1 - SOLD :P
'89 TGP <-- getrag 284 equipped - SOLD :(
'89 Olds Cutlass Ciera International coupe

4PASNU

Quote from: skalorThere is a parl/neutral rev limiter on this car so that is why it does that in park :wink:

Ahhh, thanks for that bit of info.  Now what about it bogging out at WOT?
Mike Ruckhaber
Currently own a 1990 Black TGP Stock.
Previous owner of a 1989 TGP: FFP Dogbones, K&N, KVR rotors/pads. Exhaust: 3" hi-flo cat, Dynomax 2.5" Ultra Flo mufflers. 
2000 GTP

skalor

I had the same problem when I got my car it would stutter really bad past 3500 rpms.  It turned out that the honeycomb inside the cat was all broken up and blocking the exit.  I don't know if you have a cat or not, but I would check that first.  You can actually unbolt the entire exhaust from the downpipe and drop it out of the car no problem, because it doesn't go over anything.  I would try taking off the whole exhaust and see how it runs from there.  I ran mine like this when cut out my cat, but be warned that it's really loud.

Other than that how is the ignition system on the car.  It can be cheap to swap out some coil packs or put in new plugs/wires.  Just start with the cheap stuff and go from there :)
'90 Lumina <-- Turbo 3.1 - SOLD :P
'89 TGP <-- getrag 284 equipped - SOLD :(
'89 Olds Cutlass Ciera International coupe

1trucavalier

thats sooooo true and its not only for TGP's!! I test drove a couple of 3.4's and I tried to rev em up and they would cut at about 3K+.  I thought something was wrong until I found out otherwise.
hi-flow intake, straight pipe, dsm bov, 24lb inj,  polished upper intake, turbo, and frt valve cover.

kirch

Thanx guys for the suggestions, i am going to start with the cheap stuf and see what is the matter, but first i am going to get my tranny fixed, so i will post alter to let you know :!:
KIRCH