sometimes when im driving it feels like the gas just gets cut off then comes right back on, i could be giving it 25% throttle and it just feels like it dies and comes right back so my car jerks, if im not around 3grand itll do that, but if im there it wont, could it be a fuel filter problem or is it that i just need to get a tune up? i got a new dizzy and new dizzy wires, but the spark plugs stayed the same, could it also be that, talk to me people i cant let my baby die, i drive a b18a1 rs 1990

 

do the basic things. Fuel Filter, Spark plugs, Plug wires. And see how that works out.

 

I would think its either a spark plug or main relay problem.

 

When I had this problem it was my TPS (Throttle Position Sensor)

Replaced it and adjusted it (man adjusting it with a voltage meter was a pain in the ***) and it went away.

 

how do i adjust that?

 

you need to replace it first

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MyEfSi2Slow &raquo;</TD></TR><TR><TD CLASS="quote">how do i adjust that?</TD></TR></TABLE>

Start off with the spark plugs, fuel filter, and inspect your main relay. If your engine is near stock and you have not messed around with too many of the intake components, then the TPS sensor would be one of the last places you would want to check.

 

I recommend denso iridiums for 50 bucks online, or ngk iridiums, or nology spark plugs with the wires. I heard the nology wires work great with honda engines. Also, don't spend money on those new pulstar spark plugs. My brother put in on his 350z and it's the same deal as the denso iridums except the price.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by speedtech_7gc &raquo;</TD></TR><TR><TD CLASS="quote">I recommend denso iridiums for 50 bucks online, or ngk iridiums, or nology spark plugs with the wires. I heard the nology wires work great with honda engines. Also, don't spend money on those new pulstar spark plugs. My brother put in on his 350z and it's the same deal as the denso iridums except the price.</TD></TR></TABLE>

There's nothing wrong with iridium plugs, but on a 1990 DA, I would keep throwing in standard v power NGK copper plugs. Changing them out every 15k - 20k miles is a good habit to start as it can tell you certain things that are going on in your engine that aren't so apparent from the outside. 8 or 9 bucks will get you a full set of 4.

 

k well i changed my spark plugs, and my fuel filter, my dizzy was changed a few months ago, wheres my throttle sensor and the main relay?

 

TPS will be on the throttle body itself. Its riveted onto the t-body, which makes it really complicated to adjust. Judging by your general knowledge of automobiles, I would strongly advise you not to try adjusting it.

The main relay is under the dash, around the driver side kick panel area.

Now real quick, when you say your car feels like it cuts off and dies, does the speedometer annd tach still continue to accelerate or do they drop to their starting points as if the ignition was turned off.?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by speedtech_7gc &raquo;</TD></TR><TR><TD CLASS="quote">I recommend denso iridiums for 50 bucks online, or ngk iridiums, or nology spark plugs with the wires. I heard the nology wires work great with honda engines. Also, don't spend money on those new pulstar spark plugs. My brother put in on his 350z and it's the same deal as the denso iridums except the price.</TD></TR></TABLE>

I actually dyno'ed out better with standard NGK copper plugs than with either Denso or NGK iridium plugs in both the ITR I had and a B16A setup I later had. Also, I'm convinced that aftermarket plug wires are complete snake oil. Every time I see someone claim a benefit from them, it's on a setup that had original (or at least very old) plug wires and where anything fresh would have provided the same essential benefit. I'm a big fan of the philosophy that Honda knew what they were doing when they designed these motors, and that they knew what they were doing when they chose their components.

 

the speedometer doesnt drop but it stops as if im about to shift tho, its really getting on my nerves, dumping all this money that i dont have haha, could it be my timing? thanks guys i really apprieciate the help

 

Any codes?

I've got a similar problem in my GS-R and I'm throwing an O2 sensor code. Once I get un-lazy I will change it and give the car a tune up.

 

yea i was throwing a oxygen code, so i replaced my 02 it helped me pass emission, had my dizzy changed and reseted my ecu, no check light anymore, but the car is still somehow messed up

 

what if i changed my whole throttle body and throttle sensor?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MyEfSi2Slow &raquo;</TD></TR><TR><TD CLASS="quote">what if i changed my whole throttle body and throttle sensor?</TD></TR></TABLE>

Waste of money at this point. It might do you no good.

As far as your timing is concerned - did you re-check your timing after replacing your distributor? Once you remove and replace a distributor, you do need to check ignition timing to be sure its at correct spec .

 

well i bought the car a couple months ago, the guy put anew dizzy on it, since then i drove it for a month with no problems, and now it happens, well anyway how would i go and check the ignition timing? cuz im really not trying to take it to the shop

 

I would try maybe even cleaning your throttle body or making sure your throttle cable is adjusted properly.

Judging by this post, you really haven't ran through the possible trouble spots on your car, nor have you done much research. I would search on this site for people who had similar problems. Its just really difficult to diagnose a problem we cant see or hear for ourselves.