Engine stall after downhill
 

My car a Acura Integra GSR 1994. B18C1, P72 ECU, Hondata S200, 750cc injectors, T3/T4. I have 2 problems that I don't can solve and make me crazy!

1) The first problem is this: If I start the car and go in a downhill (in a constant speed I don't need to use the throthle, second gear) and I stop the car, the rpm go to 0 and the engine stop (it dies).

2) The Second problem is: after the engine die, if I trie to start it immediately the engine don't start, the fuel pump don't start and I need to wait some time (aprox 2 minutes) and the engine start withou problem.

I realy preciate all the help.

PD.- Please excuse my bad english, my natural lnguage is the spanish.

Re: Engine stall after downhill (dariusz)
 

I had the same problem as number 2 with my 90 ls. I think its the fuel filter, also how much fuel do you have in the tank you might be starving the engine.

Re: Engine stall after downhill (SlammedDC2teg)
 

Filter is OK, and Tank have more that 1/2 in it. Is possible that this is a ECU feacture or a relee?

Re: Engine stall after downhill (dariusz)
 

if your fuel pump is not working for a certain amout of time then check your main relay, they tend to go bad and will cause intermitent no start conditions...get a helms service manual and follow the procedures to checking it..this might not be the problem or it might be...but its a start since you seem to describe it as being a fuel pump problem...

Re: Engine stall after downhill (methanemotorworks)
 

This sound very reasonable for the "second problem", I think it today, I check the main relay.

Any ideas for the "first problem"?

Re: Engine stall after downhill (dariusz)
 

well the first problem might be because your running to rich...you are using 750cc...i think thats way to much...running to rich at 0% percent throttlle could cause the motor to die....give me more detail...happens when cold/hot...all the time...etc...etc...heres an injector chart for horsepower...


When choosing aftermarket injectors, pick ones that are larger than 240cc, and that are saturated (high-impedance), NOT peak-and-hold (low-impedance) ones.
Naturally Aspirated Engines
Horsepower Injector Size*
@ Flywheel @ Wheels lb/hr cc
0 0 0 0
20 17 3 31
40 34 6 62
60 51 9 93
80 68 12 124
100 85 15 154
120 101 18 185
140 118 21 216
160 135 24 247
180 151 26 278
200 168 29 309
220 185 32 340
240 201 35 371
260 218 38 401
280 234 41 432
300 251 44 463
320 267 47 494
340 283 50 525
360 300 53 556
380 316 56 587
400 332 59 618
420 348 62 649
440 364 65 679
460 380 68 710
480 396 71 741
500 413 74 772
Forced Induction Engines
Horsepower Injector Size*
@ Flywheel @ Wheels lb/hr cc
0 0 0 0
20 17 4 37
40 34 7 74
60 51 11 111
80 68 14 148
100 85 18 185
120 101 21 222
140 118 25 259
160 135 28 296
180 151 32 334
200 168 35 371
220 185 39 408
240 201 42 445
260 218 46 482
280 234 49 519
300 251 53 556
320 267 56 593
340 283 60 630
360 300 64 667
380 316 67 704
400 332 71 741
420 348 74 778
440 364 78 815
460 380 81 852
480 396 85 889
500 413 88 926

Use these numbers when using a turbocharger,
supercharger, or N02/NOS

Re: Engine stall after downhill (methanemotorworks)
 

My Friend, my car is Turbo and N2O (18.5psi + 35Hp shot). My mix is at 13.9 in idle. The problem is common with the car a little cold (morning start, 10 minutes on and start).
I use Hondata as my ecu

Re: Engine stall after downhill (dariusz)
 

more info....did it just start happening...what happened before this started...what did you put on or did something go wrong...ask yourself that and backtrack to what the cause could be...by your explanation...it could be a million things...