Bogging after Coasting

[Hib Halverson]

Sure. Call me at work sometime at 805-685-6864.

As for the injector, get in touch with Jerry and see if the injectors he sold you flow the same as stock.

Just curious...what is a "Banski" suspension?

[Dmod81]

Thanks. Will do.

They are from Banski Motorsports: anodized aluminum rear trailing arms, toe rods, and camber rods, all with heim jointed ends.

[Ccmano]

An old thread I know. I’m curious, was this issue ever resolved and if so what was the cause and solution?
H

[Paul Workman]

Yeah...WHAT HANS SAID!!! (Inquiring minds want to know...)

[32valvZ]

That used to be my car... I sold it to him. I never heard from him again... Car was in really nice shape when it left my garage.. I think he sold it or traded it in. I was searching for it one day and saw it on a private lot someplace... Lost track of it since.

[Ccmano]

Interesting, he still shows as a member, which means he must have re-upped recently.
H

[32valvZ]

Originally Posted by Ccmano

Interesting, he still shows as a member, which means he must have re-upped recently.
H

Hmmm.. I wonder whats up... nice kid for sure. I had hoped to hear from him again at some point... kind of gave up when I saw it on the site where it was for sale...I know it was the same car because of the wheels and the suspension parts were pictured.... and VIN #

I bought the car from a guy in Tennessee name Perry... cant recall his last name right now.... I put the Samco hoses, SW headers, B&B exhaust and genuine Chrome A Molds I bought from a forum member on it and new injectors and coils, and a reseal of the top end when I had it. Jeff Flint got me all the parts I needed at the time... I really liked him allot as well... I dont know where he is currently. Cool guy though.

[Ccmano]

I still get the bogging after coasting and stalling when coming to a stop occasionally. Although the car ran good, it was more pronounced on my 1000k mile trip to LA. last week at lower evaluations and higher temps. After I returned I replaced the injectors and coils, this was previously planned, and I’m now finding this condition a bit more often here as well. In doing some research I found this interesting piece from an old 2014 post by Bob, Warp_Ten with a reply from Mark Haibeck. I thought Marks reply was interesting. I’m going to doing more datalogging here shortly. Keeping in mind bogging and stalling could be two separate issues.


“Craig, I ran into the same problem on my 95 about a month or two after Marc Haibeck did his 510 package for me. I remember him attaching his computer to the OBD port and making a physical adjustment near the throttle in the front of the engine but did not recall precisely what he did. So I asked him and he responded with the following; hope this helps:

Hi Bob,

The adjustment that we made is the, "idle air flow". Basically the air flow through the throttle body at closed throttle needs to match the table that the calibration chip uses to control the IAC servo motor. Engine's with stock cams can use the OE table values. The OE IAC count at idle with a hot engine is 10 IAC servo steps. On your engine the IAC count was 30 at idle. That's because my larger 63 mm throttle body is tighter and leaks less air than the OE throttle body. There is another concern, that the IAC count could go to zero. Then the idle speed would go too high. I initially left the IAC at 30 because running out of counts is a more common problem than die out if the IAC count is not perfect. After your engine exhibited the die out problem. I adjusted the primary throttle plate stop screw to open the throttle until the IAC count on the scanner was 10.

An engine with big cams might idle at 850 rpm. Because of the additional air flow requirement, the IAC count is typically 50. In that case the table in the calibration chip needs to be adjusted to what the engine wants, that is 50.

When I figured this out ten years ago I probably spent 20 hours analyzing data to understand it. At first one might think that the problem is related to fueling or spark advance. I spent most of the time determining that I was barking up the wrong tree.

Regards, Marc

[WARP TEN]

Originally Posted by Ccmano

I still get the bogging after coasting and stalling when coming to a stop occasionally. Although the car ran good, it was more pronounced on my 1000k mile trip to LA. last week at lower evaluations and higher temps. After I returned I replaced the injectors and coils, this was previously planned, and I’m now finding this condition a bit more often here as well. In doing some research I found this interesting piece from an old 2014 post by Bob, Warp_Ten with a reply from Mark Haibeck. I thought Marks reply was interesting. I’m going to doing more datalogging here shortly. Keeping in mind bogging and stalling could be two separate issues.


“Craig, I ran into the same problem on my 95 about a month or two after Marc Haibeck did his 510 package for me. I remember him attaching his computer to the OBD port and making a physical adjustment near the throttle in the front of the engine but did not recall precisely what he did. So I asked him and he responded with the following; hope this helps:

Hi Bob,

The adjustment that we made is the, "idle air flow". Basically the air flow through the throttle body at closed throttle needs to match the table that the calibration chip uses to control the IAC servo motor. Engine's with stock cams can use the OE table values. The OE IAC count at idle with a hot engine is 10 IAC servo steps. On your engine the IAC count was 30 at idle. That's because my larger 63 mm throttle body is tighter and leaks less air than the OE throttle body. There is another concern, that the IAC count could go to zero. Then the idle speed would go too high. I initially left the IAC at 30 because running out of counts is a more common problem than die out if the IAC count is not perfect. After your engine exhibited the die out problem. I adjusted the primary throttle plate stop screw to open the throttle until the IAC count on the scanner was 10.

An engine with big cams might idle at 850 rpm. Because of the additional air flow requirement, the IAC count is typically 50. In that case the table in the calibration chip needs to be adjusted to what the engine wants, that is 50.

When I figured this out ten years ago I probably spent 20 hours analyzing data to understand it. At first one might think that the problem is related to fueling or spark advance. I spent most of the time determining that I was barking up the wrong tree.

Regards, Marc

Yeah Marc is always good for excellent advice and explanations. As noted, I had the problem after the 510 package was done and he fixed it right up when I stopped over for lunch one day.--Bob

[Ccmano]

I’m going to be giving this method a try today or tomorrow. After I installed the Injectors and coils last week the IAC count was at 29. After resetting the IAC motor I got it down to 16. I can’t imagine it’s that critical but Mark certainly knows a heck of a lot more than I do.
H