1991 Toyota Camry Hard to start/idles very rough

MARTWEIN

MEMBER
1991 TOYOTA CAMRY
4 CYL
2WD
AUTOMATIC
249,800 MILES

I have a 91 toyota camry. The thing used to run great. About a week ago, I went to leave and started it. It started but immediately ran rough and then died. The same day I did a tune up on it. It didn't get any better. It would take 5-6 times of cranking it over and it would stay running but idle very rough. It you let it warm up, it runs like a champ. A shop told me it was getting to much fuel and flooding itself. I replaced the fuel pressure regulator and it didn't take care of it. What else should I check?

3 Replies

MERLIN2021

MECHANIC
17,250 POSTS

Check the cold start injector time switch, and read the codes...may be something stored in the computer's memory...

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Monday, March 17th, 2008 AT 12:25 PM

DREADC

MEMBER
4 POSTS

When you figure it out, let me know. It's very frustrating. Changed filters. Etc. Still no check engine lights.

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Tuesday, March 18th, 2008 AT 8:53 PM

MARTWEIN

MEMBER
16 POSTS

A few weeks ago when this all started. I used my multimeter and checked the ohms on the cold start injector valve. My repair manual said between 2 and 4 ohms. That is what I got on the meter. Then today I noticed All Data said 24 ohms. I decided to remove the valve and noticed that it had massive dirt and build up on it on the inside. I sprayed it off with carb cleaner and re-installed it. The vehicle fired right up and runs like a champ again. :D

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+1

Tuesday, March 18th, 2008 AT 9:34 PM