4,000 RPM Cough, Stutter, Stuffy Head kinda problem.
10-26-2009, 07:03 PM
#17
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Still a work in progress. I did however make some head way.
I went and replaced my Braile racing battery for a Optima Red Top and swapped out my 3 bar fuel pressure regualtor for my stock. Upon driving the car it would still cough and stutter by not as bad. I could acutally make it through the RPM Band. This has been the first improvement since doing all the items listed in my first post. Thinking the Optima has more amperage then the little Braille.
The car has been under the knife since that drive. I have replaced the battery cables from the battery to the starter. The positive and the ground. I found that the original positive battery cable had breaks and cracks all over the insulation. It might have been grounding itself to the bellhousing under heavy load (theory). I also cleaned up the ground on the negative, both near the battery and on the back of the motor. I read some older posts staying this could be the cause. Others have installed all new cables and said it to be the miracle fix. Fixing quirky electrical problems like fan speed, certain lights shutting on and off, as well as just plain old running better.
The starter is also getting replaced. I have been having intermittent problems with it along with a battery drain so its out. The new one will arrive this week.
Mulitpass - I'm curious. Check out your battery cables on your car. What is the condition of the cables and grounding area.
I went and replaced my Braile racing battery for a Optima Red Top and swapped out my 3 bar fuel pressure regualtor for my stock. Upon driving the car it would still cough and stutter by not as bad. I could acutally make it through the RPM Band. This has been the first improvement since doing all the items listed in my first post. Thinking the Optima has more amperage then the little Braille.
The car has been under the knife since that drive. I have replaced the battery cables from the battery to the starter. The positive and the ground. I found that the original positive battery cable had breaks and cracks all over the insulation. It might have been grounding itself to the bellhousing under heavy load (theory). I also cleaned up the ground on the negative, both near the battery and on the back of the motor. I read some older posts staying this could be the cause. Others have installed all new cables and said it to be the miracle fix. Fixing quirky electrical problems like fan speed, certain lights shutting on and off, as well as just plain old running better.
The starter is also getting replaced. I have been having intermittent problems with it along with a battery drain so its out. The new one will arrive this week.
Mulitpass - I'm curious. Check out your battery cables on your car. What is the condition of the cables and grounding area.
10-26-2009, 10:35 PM
#18
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Thanks for the tip, I'll check the grounds and cables.
This could be the problem, as my battery keeps dying because the car sits all the time, but I charge it up with a trickle charger. The battery is normal size and is only a year old. Maybe it is the alternator not putting out enough juice.
I am waiting on a fuel rail and FPR and damper, so I'll check once those are installed, could be weeks from now...
This could be the problem, as my battery keeps dying because the car sits all the time, but I charge it up with a trickle charger. The battery is normal size and is only a year old. Maybe it is the alternator not putting out enough juice.
I am waiting on a fuel rail and FPR and damper, so I'll check once those are installed, could be weeks from now...
10-26-2009, 11:05 PM
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11-09-2009, 03:03 PM
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SOLVED!
After my parts extravaganza I have finally fixed my stutter problem. I have replaced the positive and negative battery cables and cleaned up the grounding areas. The car is is now ripping through the gears!
Went through alot of parts and alot of labor hours on this issue. I'm so relieved to have this solved.
Now I'm going to put together of a build thread of my little 14 month project 951.
After my parts extravaganza I have finally fixed my stutter problem. I have replaced the positive and negative battery cables and cleaned up the grounding areas. The car is is now ripping through the gears!
Went through alot of parts and alot of labor hours on this issue. I'm so relieved to have this solved.
Now I'm going to put together of a build thread of my little 14 month project 951.
11-11-2009, 12:09 PM
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That's awesome, thanks for the good news. I am still waiting on a replacement fuel rail. I'll tackle the battery cables.
Sometimes hope is the strongest motivator.
Sometimes hope is the strongest motivator.
11-12-2009, 05:17 PM
#23
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I made my own battery cables. I used this thread as a reference.
https://rennlist.com/forums/924-931-...ble-specs.html
I made my main positive to the 75" spec but it is alittle long. You can get some nice premade cable from Summit. The may length I saw were 65" This may or maynot be long enough, unsure. Get them swapped and post up the results
https://rennlist.com/forums/924-931-...ble-specs.html
I made my main positive to the 75" spec but it is alittle long. You can get some nice premade cable from Summit. The may length I saw were 65" This may or maynot be long enough, unsure. Get them swapped and post up the results
