Expert: autohelp - 12/18/2008

Question
QUESTION: This car has me stumped. We have changed the spark plugs, give the car a tune up, changed the brain box, changed the coil, changed the ignition module, and this car starts great, and runs great until it warms up then it pops and backfires through carburetor and exhaust if you shut the car off it still starts great.  Fuel pressure reads 42. I am unsure of what to try next. Please help

ANSWER: IS or HAS the CHECK ENGINE light ever illuminated on the dash ?.

If it HAS and you know how to retrieve the codes from the computer, Do so and let me know what codes you get.

If you do NOT know how to retrieve the codes, let me know.

---------- FOLLOW-UP ----------

QUESTION: I have a diagnostic machine and it states the vehicle is not responding, I am unsure of how to read the codes that you are talking about

Answer
1. Turn the ignition switch to the ON position. Do NOT start the engine.

2. Simultaneously push and hold the OFF and WARMER buttons for 3 seconds and then release them.

3. CODES in the form of LETTERS & NUMBERS will appear on the fuel data screen.

I need to know EXACTLY what displays on the screen as if you were video taping it.

The screen will stop and display .7.0


4. Turn OFF ignition switch.