'88 V6 2.8L
Rebuilt Engine
New Distributor, Plugs, Wires, Coil, MAF Sensor, Cap & Rotor, Super Chip, New Computer, TPS adjusted Perfectly, New Fuel Regulator

Runs Rich, Loss of RPM when floored, See Sparks Between Wires at night, Popping Through Intake in Neutral, Runs and idles great until I want to push on the gas more than half way.

Could it be a problem with wiring harness...
How much do they run, where can I get one, how hard is it to put in, should I get someone to do it for me?????

Help me please....

 

Sparks at wiring at night
Fix that sh*t real quick!!!!!
is it the plug wires or other wiring?

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85 Firebird. $150.00
2.8 Auto.
Blown Head Gasket.
turbo coming soon

 

yea, you shouldn't be seeing sparks bewteen you spark plug wires at night....or any wires for that matter....

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1990 Firebird 3.1
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- Auto Trans, TA Body Kit
- Home Made C.A.I.
- ASP Underdrive Pulleys
- MSD 8.5mm Superconducter Wires (custom-cut)
- MSD GM Blaster Coil
- AC Delco Cap & Rotor
- Bosh Platinum +4 plugs
- Mobil 1 Synthetic Fluids
- 2.5" Hooker Aero-Chamber Cat-back
- 2.5" Hooker Elite Stainless Extension Tips
- GTS Blackouts (stickers removed)
- TB Bypass

KILLS = Dodge Daytona (stick), 2000 Toyota 4 Runner 4WD,
1997ish Ford Explorer, "older" Jeep Cherokee (don't ask why they are all SUVs...who the hell knows?)

LOSSES = 300zx (had him half way through 2nd, he was manual)

"The racing dice added 5hp...I SWEAR!"

 

Yea its showing sparks
tiny little one between the spark plug wires

i had 8mm high performance wires

 

get new wires, they're shorting themselves out, not all energy getting to plugs & that's why you are running rich

 

is there a particular way i have to place the wires so they aren't close to eachother or something???

cause this is the third set i've replaced in a couple of weeks.

the original set was 8mm high performance

then i got some kraegen cheepies

then i got some from the chevy dealer

and i've replaced the coil

 

are they sparking close to the cap or block?

 

close to the block

 

you need some plug insulaters, check jegs, summit, paw, northern auto, they shouldn't be too expensive.

 

plug insulators

i've got the sheeths on the ends of my wires, to keep the intake from bunring them up. Is that the kind of thing your talkin' about?

Could I have a grounding problem too.

Is that why the sparks are flyin'?

 

the heat is eating up your wires, put the sheaths by the block, at the end of the wires, it's a lot hotter there than at the manifold.

 

i meant exhaust manifold.

Yea, there on the ends that cover the plugs.

 

might need to breakdown and get full legnth wire coveres, they come in different colors.

 

thanks for the suggestions

do you think that will help my loss of RPM and power?

 

not yeah, but HELL YEAH!

 

SWEEEET

 

Most of the answers have been related to ignition wires and spark plugs.

Yes, it sounds like you need both of them, but another area you may want to look into is the CTS-Coolant Temp Sensor. If it is reading incorrectly the ECM will make it run too rich or too lean to compensate for an overly hot or cold condition.

Then again, you could always swap in a V8

------------------
Mike L.

The Weapon of Choice:
1987 IROC Z 5.7 TPI A4 3.27 Borg-Warner four wheel disc
Mods: 2300-2500 Stall Converter, Shift Kit(GM parts), TPI Specialties Stage 3 PROM, Modified Airbox w/ K&N's, homemade cold air, Relocated MAT sensor, Gutted MAF, 160* thermostat, MSD 6A, Accel 8mm Wires, bypassed TB coolant, Flowmaster 3 chamber single 3" in/out muffler, 3" MAC mandrel intermediate, custom dual !cat Y-pipe. airfoil, ported plenum. !smog, few others I forgot...???

**BOYCOTT LAPEER DRAGWAY**

 

Yea.. check that cts like iroc said...i replaced mine and gained about 10mpg and it corrected the air/fuel ratio some.

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1989 Firebird. Modded.
-For Sale-
Email: gglasgow@socal.rr.com
asking price: 3300 with a new paint job. Email for specs
"I'd rather run last in a full out race, than to NOT have run at all"
#3 Forever

My Site:
Click Here to see my car!

 

I replaced one of the temp sensors becuase I got a code for it. Just after I replaced it the problem started happening.

There are two sensors on the top of my intake manifold. A big one and a small one. I replaced the small one. Should I replace the big one?

 

The big one is the IAC... no need to replace it unless your having idleing troubles... even then it most likely just needs to be cleaned.

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1985 Camaro SC - 2.8L, auto.

http://www.xenodrgn.f2s.com/Frontright.jpg

 

if you can fix the problem with your wires then i think you will be all set. if not, worst case scenario you will have better spark plug wire and have eliminated one more problem, but i can almost bet thats it. i'm running MSD superconducter wires and haven't had a problem and love em, and i know alot of the other guys run accels....but just .02 and let us know how things work out. but if you aren't getting enough spark to the cylinders you will lose power and have left over gas in the cylinder leading to a rich condition. (correct me if i am wrong)

 

what simptoms do you look for a bad coolant temp sensor other than bad gas milage?

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85 2.8L Sport Coupe 5-speed.
Mods: Hpertech chip and powerstat, MSD 6A-L, Crane fireball coil, Accel Cap and Rotor, Dynomax hi-flow cat and catback system with a dynomax magnum race bullet muffler on the i-pipe, K&N filterchargers, Gutted Air Boxes, 8mm Wires, Eibach Sportlines and Tokiko springs/shocks setup, Global west sub frames, Suspension techniqs front and rear sway bars, and good ole 88 IROC wheels with Kumo Ecstas on em!
"It's not the ricers, it's those damn V8's!"

Wins: 2000 V6 Accord, 69 302 Mustang, 2000 Auto VR6 Jetta, 89 Toyota MR2, 90 Civic Si, 76 350 Camaro, 2000 3.8 5-speed Camaro.

 

Just hook it up to a scanner and read the CTS Temp. value. It should be consistent with the gauge on the dash. If it reads considerably higher or lower, then its in need of replacement.




------------------
Mike L.

The Weapon of Choice:
1987 IROC Z 5.7 TPI A4 3.27 Borg-Warner four wheel disc
Mods: 2300-2500 Stall Converter, Shift Kit(GM parts), TPI Specialties Stage 3 PROM, Modified Airbox w/ K&N's, homemade cold air, Relocated MAT sensor, Gutted MAF, 160* thermostat, MSD 6A, Accel 8mm Wires, bypassed TB coolant, Flowmaster 3 chamber single 3" in/out muffler, 3" MAC mandrel intermediate, custom dual !cat Y-pipe. airfoil, ported plenum. !smog, few others I forgot...???

**BOYCOTT LAPEER DRAGWAY**