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View Full Version : this problem erks me can anyone tell me what it is

madness410
03-11-2009, 01:28 PM
i have an 87 iroc with pretty much aftermarket everything. when i turn the wheel wayyy to the left or wayyyy to the right the rpm dips down alot and the car feels like its going to stall if i dont give it gas. im taking it that its not normal, but can anyone point me in the right direction as to what it is?

thanks in advance

Jon
Scrat's_Camaro
03-11-2009, 01:53 PM
it might be just the steering pump being under load since your turning it. i see alot of cars do it but not as bad as your describing. for starters, i would check the fluid level in the steering pump to see if it is low or over filled.
BonzoHansen
03-11-2009, 01:57 PM
^^^yup

EFI or carb?
madness410
03-11-2009, 02:06 PM
carbureated
madness410
03-11-2009, 02:07 PM
the fluid for the steering pump is right in front of the booster correct?
BonzoHansen
03-11-2009, 03:23 PM
No, that is the brake reservoir. The p/s pump/reservoir is bolted to the front of the engine, should be lower LH side. Check the fluid.

When you load the PS at the end of the range it loads the pump which can be a drag on the engine. EFI can compensate with the IAC but a carb can't.
WildBillyT
03-11-2009, 03:41 PM
The p/s pump/resevoir is bolted to the front of the engine, shoud be lower LH side. Check the fluid.

When you load the PS at the end of the range it loads the pump which can be a drag on the engine. EFI can compensate with the IAC but a carb can't.

In addition, if you are running non-stock tires that are larger and/or stickier than the originals the system will have to strain more to turn them.
deadtrend1
03-11-2009, 04:35 PM
No, that is the brake reservoir. The p/s pump/reservoir is bolted to the front of the engine, should be lower LH side. Check the fluid.

When you load the PS at the end of the range it loads the pump which can be a drag on the engine. EFI can compensate with the IAC but a carb can't.

Carbs do also. There is a sensor in the high pressure PS line, that will click on that selenoid to push the throttle linkage a little.
BonzoHansen
03-11-2009, 04:38 PM
Carbs do also. There is a sensor in the high pressure PS line, that will click on that selenoid to push the throttle linkage a little.

I'm assuming that this is not a carb car from GM.
deadtrend1
03-11-2009, 05:03 PM
I'm assuming that this is not a carb car from GM.

my 86 T/A had it, before I swapped to the TPI
Tru2Chevy
03-11-2009, 05:14 PM
my 86 T/A had it, before I swapped to the TPI

No, he means that the OP isn't using a CC Q-jet....IIRC he's got a BG 750.

- Justin
deadtrend1
03-11-2009, 05:38 PM
If you say so ... lol
madness410
03-12-2009, 04:20 PM
No, he means that the OP isn't using a CC Q-jet....IIRC he's got a BG 750.

- Justin

yeah i have a 4bbl 750cfm barry grant double pumper. the tires are stock though, 245/50/16 on stock iroc rims. i will check the ps fluid and check back here.
sweetbmxrider
03-12-2009, 06:26 PM
maybe the pump is on its way out and is putting more of a load on the car now. it only does it if you are > 5 mph or completely stopped right?
madness410
03-12-2009, 07:55 PM
maybe the pump is on its way out and is putting more of a load on the car now. it only does it if you are > 5 mph or completely stopped right?

yeah thad exactly what happens. that could be a possibility. I'll check then fluids first haven't got a chance to do that between work and school
sweetbmxrider
03-12-2009, 09:01 PM
check it and also check the belt deflection. basically pull up and push down on the power steering belt (assuming this is a v-belt, if its a serpentine/one belt just ignore) if it deflects more than roughly 1/2"-3/4" at most, i'd stick a belt on there or adjust the tension.
Jersyboyy
03-12-2009, 11:56 PM
Dude that same thing use to happen with my old edelbrock. Carb needs adjustment when ever I turned hard it wouldnt have enough fuel. When I put the holley on same thing. Im still wondering what that could have been.
madness410
03-13-2009, 10:20 AM
Dude that same thing use to happen with my old edelbrock. Carb needs adjustment when ever I turned hard it wouldnt have enough fuel. When I put the holley on same thing. Im still wondering what that could have been.

any other signs that a carb needs adjustment? remember how u said our cars have to warm up by keeping your foot on the gas until its warm? does yours still do that even though the weather got a little bit better?
WildBillyT
03-13-2009, 10:22 AM
any other signs that a carb needs adjustment? remember how u said our cars have to warm up by keeping your foot on the gas until its warm? does yours still do that even though the weather got a little bit better?

Does your engine have a choke?
Jersyboyy
03-13-2009, 12:14 PM
Neither one of our cars have chokes but my motor had two bad cylinders so their was a reason why mine did that and its been 5 months since my car has ran. Yours on the other hand probally could use an adjustment.

I was told from John Mazio(from "Ask Franks") that if the motor is set up right timings good and the carb is good even with out the choke I shouldnt have had such a big problem getting it started in the mornings like I was.

My problem was bad pistons and crappy wires-yours could be carb adjustment or timing you never know because you bought this car set up from someone else you should really go over everything and dial it all in.
madness410
03-13-2009, 12:17 PM
Does your engine have a choke?

do u mean to ask if the carb has a choke? the carb doesn't.
Ian
03-14-2009, 06:26 PM
either the P/S fluid level or the P/S pump itself. if the belt is too loose, wouldn't it will slip on the pulley during steering lock?
sweetbmxrider
03-15-2009, 10:09 AM
yeah i don't really know where i was going there. it seems like a combo of different things are probably going on.