|
|
Joined: Sep 2000
Posts: 7,025
Hard-core CEG'er
|
OP
Hard-core CEG'er
Joined: Sep 2000
Posts: 7,025 |
First of all, the engine is running extremely rich. It constantly backfires. The engine runs alright and holds an idle fine when cold but after it runs for about 15 minutes and warms up, it has a hard time holding an idle. I constantly have to keep giving it gas when the clutch is in just to keep it running. There is absolutely no power either. Im guessing I'm pushing 50-60 hp tops, which is partly due to the compression, lack of tune, and only 4 psi. While cruising around town friday there was constant surging under light acceleration. During this surging phase, even if i put the gas pedal to the floor, RPM's dont raise or anything. I just keep going along at the same speed and RPM. It's as if throttle position is irrelevant. Eventually the car will kick back into "normal" mode and it will have power again, but this alternates back and forth. Only thing ive guessed is that I know that timing has been pulled from the chip from Street Flight. Perhaps, once the engine warms up, more timing is pulled and the engine just starts to run like crap?  Im sure running rich doesnt help either. Any thoughts from anyone?
Jim Hahn
1996 T-Red Contour SE Reborn 4/6/04
3.0L swap and Arizona Dyno Chip Turbo Kit
364 whp, 410 wtq @ 4,700 rpm
|
|
|
|
|
Joined: Sep 2002
Posts: 1,196
Hard-core CEG\'er
|
|
Hard-core CEG\'er
Joined: Sep 2002
Posts: 1,196 |
Just a guess but could it be the Throttle Position Sensor is bad? May be after the engine bay gets warm the TPS acts funny.
2004 Evolution VIII cams-exhaust-tune
315whp 12.7@109
|
|
|
|
|
Joined: Oct 2001
Posts: 1,055
Hard-core CEG\'er
|
|
Hard-core CEG\'er
Joined: Oct 2001
Posts: 1,055 |
What MAF are you running, that would explain a bad idle and also an extremely rich condition....possibly once it starts idling liuke crap pull the plug to the maf and see if it smooths out.
Derek Johnson
88 TurboTBird 32psi, t3/t4 bb 50trim, megasquirt, 3 bar map, 50lb inj, roller cam w adj. gear, header, 3" downpipe and full exhaust, gutted intake manifolds, spec stg 3
95SE 3L gone
|
|
|
|
|
Joined: Sep 2000
Posts: 7,025
Hard-core CEG'er
|
|
OP
Hard-core CEG'er
Joined: Sep 2000
Posts: 7,025 |
Im running Tom's 80mm MAF. I bought it off from him when he sold his old 3.0L. He gave me the maf transfer function for it, so I doubt thats whats causing it to act funny.
Jim Hahn
1996 T-Red Contour SE Reborn 4/6/04
3.0L swap and Arizona Dyno Chip Turbo Kit
364 whp, 410 wtq @ 4,700 rpm
|
|
|
|
|
Joined: Sep 2000
Posts: 9,602
Hard-core CEG'er
|
|
Hard-core CEG'er
Joined: Sep 2000
Posts: 9,602 |
Originally posted by beyondloadedSE:
Im running Tom's 80mm MAF. I bought it off from him when he sold his old 3.0L. He gave me the maf transfer function for it, so I doubt thats whats causing it to act funny.
However did you do the conversion from what injectors the MAF is calibrated to verses what injectors you are using.
Didn't you use larger injectors?
Have you carefully cleaned the MAF element?
2000 SVT #674
13.47 @ 102 - All Motor!
It was not broke; Yet I fixed it anyway.
|
|
|
|
|
Joined: Sep 2000
Posts: 7,025
Hard-core CEG'er
|
|
OP
Hard-core CEG'er
Joined: Sep 2000
Posts: 7,025 |
Tom was nice enough to plug and chug the new numbers for me after I bought the MAF.
I havent cleaned the MAF, but it was very clean when i received it. Perhaps I'll take a look at that.
Jim Hahn
1996 T-Red Contour SE Reborn 4/6/04
3.0L swap and Arizona Dyno Chip Turbo Kit
364 whp, 410 wtq @ 4,700 rpm
|
|
|
|
|
Joined: Aug 2002
Posts: 1,785
Hard-core CEG\'er
|
|
Hard-core CEG\'er
Joined: Aug 2002
Posts: 1,785 |
Could it possible be at a certian temp range the "fire" is being blown out? Maybe check gap on plugs. Most likley not it but worth a shot.
Just a Plain SE.
AKA Big Country
I maybe path914's B**** now, but wait until he needs his clutch done. We will see WHO is WHO's B**** then!
|
|
|
|
|
Joined: Jun 2004
Posts: 7
Newbie
|
|
Newbie
Joined: Jun 2004
Posts: 7 |
If you find out what the cause of your rich condition is let me know, I've been battling the same deal for well over a year and pretty much parked the car till I find the patients to continue on it.
-Nate
-98.5 SVT
3L lots O goodies..
|
|
|
|
|
Joined: Sep 2000
Posts: 7,025
Hard-core CEG'er
|
|
OP
Hard-core CEG'er
Joined: Sep 2000
Posts: 7,025 |
Originally posted by SVTN8:
If you find out what the cause of your rich condition is let me know, I've been battling the same deal for well over a year and pretty much parked the car till I find the patients to continue on it.
-Nate
-98.5 SVT
3L lots O goodies..
the ground strap on the coil pack was disconnected.
Jim Hahn
1996 T-Red Contour SE Reborn 4/6/04
3.0L swap and Arizona Dyno Chip Turbo Kit
364 whp, 410 wtq @ 4,700 rpm
|
|
|
|
|
Joined: Jun 2004
Posts: 7
Newbie
|
|
Newbie
Joined: Jun 2004
Posts: 7 |
Grr... tried that one.. glad you've got it straightened around..
-Nate
|
|
|
|
|
