Beretta.net

A 1988 Chevrolet Beretta GT-V 6 is hard to start and stalls out. ÂÂÂ When i do get it started the idle fluctuates. ÂÂÂ When i get to a stop light/sign i have to tap accelerator or put it in neutral to keep it from stalling. ÂÂÂ I have already had one diagnostic and had crankshaft sensor replaced and six new sparkplugs put in.  Still the same and worse since it got down to 40's F. ÂÂÂ I got another diagnostic done today and am awaiting part/s. ÂÂÂ Any ideas. ÂÂÂ I will let you know results when i get part/s replaced.   ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ ÂÂÂ tilleyev

TPS or Fuel related would be my guess.

Yeah- I would have to agree with 88GTU...

Has it given you a Service Engine Light?  If so, reading the code will help pin-point what's going on.  It sounds alot like a bad Throttle Position Sensor, but it could be a slew of other things--
how old are your coil packs?  
Have you replaced your fuel filter?
If not, you probably have clogging injector(s)
Have you ever cleaned the throttle body?
Something as simple as a dirty air filter could cause some of this, too...

3 things for combustion to occur, all must be in the proper quantities... AIR, SPARK, FUEL.

The fuel injectors were just cleaned, 6 new sparkplugs, new oil/filter, new crankshaft sensor.  Coil packs and module have 29,000 miles on.  When i am a stop light/sign i pop it into neutral so i does not stall out.  No codes came up.  Now it is very hard to start and when it does it is very rough; but smoothes out once it is warmed up.

Fuel regulator??

new fuel regulator

All good suggestions-----
plus ,don't forget to check vacuum lines .
   -and even if you seem to rule out the tps-check the wireing to  the tps-as a burnt wire insulataion in the wireing harness somewhere is not unheard of,and it happened to me a few years ago ,and each time the 2 bared wires touched the idle would go haywire and often shut the car down,once even causing the acclerator to floorboard on its own for a few miles .(thank heaven i was on the 4 lane.)

(1988GTU @ Nov. 19 2005,13:16)Q
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ETPS or Fuel related would be my guess.
Check the return/feed fuel lines for leakage.
Could be sucking too much air, or not building vacuum.

My red Beretta GT is running alot better.  I was awaiting an MAF sensor- they got one in and it was a 4 pronger- mine is a five pronger.  So I guess it is taking the slow boat from China.  In the mean time I went to Harry's U-Pull-It and picked one up for under $15.00 and it ran slightly better.  Today, I checked the codes with my cheapy $27.00 Trouble Code Scanner and came up with a 22 ; which is the TPS.  You guys were right all along.  Car runs better, but there is still a vacuum leak under the plenum on the driver side.  That is for my next visit.  Other plans in the near future is a 140 amp alternator.  And for anybody into cryogenics; I had 6 Vitec Spark Plug Wires and 6 Champion Copper Plus Spark Plugs dipped in nitrogen.  I might get the plugs gapped 0.010 wider and use copper indexing washers.  I wonder whether I should get the alternator dipped in nitrogen or will that activate the flux capacitator and send my Beretta back in time.  If i went back to 1979; gas was around $1.20 a gallon.  Better use some old dollar bills and remove the current 2005 newspapers so no one will take notice.  I could tell them my Beretta is a prototype.                             tilleyev

and they just might believe you too

W T F, You dipped spark plug wires in nitrogen.
That's awesome.............

Click the banana ^

(tilleyev @ Nov. 29 2005,20:11)Q
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EToday, I checked the codes with my cheapy $27.00 Trouble Code Scanner and came up with a 22 ; which is the TPS.  You guys were right all along.
I thought you said you already had a diagnostic done and it showed nothing out of the ordinary. Sounds like whoever did it needs to get their equipment looked at...