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Hi guys i have a 1990 toyota starlet it is a great wee car but we are having a few problems it keeps on backfiring an wont start i have replaced the plugs leads rotoa arm distrubor cap it was going great after that but now has started to backfire an wont start please help

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  • Cars & Trucks Master
  • 12,223 Answers

Please RUN the scanner/computer for easy diagnostic and fix it.
The electronic vehicle now is very complicated. You can have faulty: Ignition coil+PCM+wires spark+sparkplug+PCM+BCM, sensor ,etc.
see the diagram attached.
Do not waste your time +and money.

God bless youhi guys i have a 1990 toyota starlet it is a great - e00a912c-50c2-4a31-bfca-b2d7393af16c.jpg

Posted on Jul 09, 2013

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SOURCE: starting hesitation, replaced plugs, wires,

timeing off or need a timeing chain

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SOURCE: 1992 dodge dakota starting problem

The first thing you need is to have the unit scanned. Check things like the baro sensor,map sensor,coolant temp. and the TP sensor.Also check your fuel pressure,volume and injector spray pattern. I think you will have found your problem,but if not hit me back with engine size and any codes,Good Luck.

Posted on Aug 25, 2008

  • 1 Answer

SOURCE: starting and running problem

Breaking up like you described can be related to a condition where the distributor drive gear is wearing out.
Had you checked it for rotor tip travel (about 5mm of loose travel is the max) or had the distributor indexed? The indexing procedure appears to be similar to an ignition timing adjustment but isn't the same.
Chrysler TSB 18-08-93 Rev A describes a condition often seen on the 1992-1993 3.9 engine. The distributor drive gear wears out prematurely and then wallows out the support bushing in the engine block. Your oil pump is driven by the same gear through the distributor shaft, so cold engine operation often is worse from the higher viscosity of the oil and the resulting load it places on the worn parts.
The distributor index slips to the retarded zone (trails what it should be) just from the gear wear. Adding in the worn bushing and chain stretch can put the distributor in a position where ignition cross-firing can occur and the switch plate (cam sensor) within the distributor can drop out-of-sync with the crank sensor.
If you haven't done so, check this out for me. Remove the distributor cap and twist the rotor clockwise and counter-clockwise. The total tip travel should not exceed 5mm, which is just about 1/8". Even if it exceeds this, an adjustment/ indexing of the distributor will get it running right again if only for a short while.

Posted on Mar 11, 2009

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SOURCE: 1992 Chevrolet Suburban 1500 350 backfiring and headers glowing

You probably have a clogged up exhaust system building backpressure on the engine. Check your mufflers and catalytic convertors if you have them something is restricting the exhaust.

Posted on Sep 08, 2009

  • 1 Answer

SOURCE: 92 astro 4.3 stalls backfires hesitates

i put a new distrubter in and set the timing it saiad top dead was no4.but it still backfires
92 cheve blazer vortec v-6

Posted on Mar 13, 2010

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My Toyota Starlet is demon possessed!


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I have a Toyota Starlet. When I got it the radio displayed SEC, so I entered the code and it worked. However, sometimes after I start the engine, the radio returns to SEC as if the battery were...


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di

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